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Nurgul Atmaca, Sevket Arikan, Dinc Essiz, Hakan Kalender, Ozkan Simsek, Fatih Sultan Bilmen, Ruhi Kabakci
Mancozeb, metalaxyl and tebucanazole are widely used pesticides in agriculture and industry to treat plant pathogenic fungi. Livestock may be exposed to such substances by consuming contaminated plants. The present study was designed to evaluate the effects of these three fungicides on bovine luteal cell steroidogenesis. Luteal slices from mid-cycle corpus luteum were dissociated into single cell suspension in aerated (O2 ) culture media (DMEM/F12) by enzymatic digestion. The cells were incubated in newborn calf serum (10%) for 18 h and then with serum-free media containing mancozeb (0...
March 13, 2018: Environmental Toxicology and Pharmacology
Md Saddam Hossain, Takahiro Tanaka, Kazuyoshi Takagi, Junji Hayashi, Mamoru Wakayama
In the present study, we purified α-amino acid ester hydrolase (AEH) from cell-free extracts of the Stenotrophomonas maltophilia strain HS1. The approximately 70-kDa AEH from S. maltophilia HS1 (SmAEH) was homogeneous in sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analyses, and was present as a tetramer in gel-filtration experiments. The activity of the SmAEH enzyme was then determined by monitoring the synthesis of the antihypertensive agent dipeptide isoleucyl-tryptophan (Ile-Trp) from isoleucyl methyl ester (Ile-OMe) and tryptophan (Trp)...
March 2018: 3 Biotech
Lingling Shan, Xin Zhuo, Fuwu Zhang, Yunlu Dai, Guizhi Zhu, Bryant C Yung, Wenpei Fan, Kefeng Zhai, Orit Jacobson, Dale O Kiesewetter, Ying Ma, Guizhen Gao, Xiaoyuan Chen
Folate receptor (FR) has proven to be a valuable target for chemotherapy using folic acid (FA) conjugates. However, FA-conjugated chemotherapeutics still have low therapeutic efficacy accompanied with side effects, resulting from complications such as short circulation half-life, limited tumor delivery, as well as high kidney accumulation. Herein, we present a novel FA-conjugated paclitaxel (PTX) prodrug which was additionally conjugated with an Evans blue (EB) derivative for albumin binding. The resulting bifunctional prodrug prolonged blood circulation, enhanced tumor accumulation, and consequently improved tumor therapeutic efficacy...
2018: Theranostics
Lizhou Lin, Yu Fan, Feng Gao, Lifang Jin, Dan Li, Wenjie Sun, Fan Li, Peng Qin, Qiusheng Shi, Xiangyang Shi, Lianfang Du
Conventional chemotherapy of pancreatic cancer (PaCa) suffers the problems of low drug permeability and inherent or acquired drug resistance. Development of new strategies for enhanced therapy still remains a great challenge. Herein, we report a new ultrasound-targeted microbubble destruction (UTMD)-promoted delivery system based on dendrimer-entrapped gold nanoparticles (Au DENPs) for co-delivery of gemcitabine (Gem) and miR-21 inhibitor (miR-21i). Methods: In this study, Gem-Au DENPs/miR-21i was designed and synthesized...
2018: Theranostics
Nan Mu, Jintao Gu, Nannan Liu, Xiaochang Xue, Zhen Shu, Kuo Zhang, Tonglie Huang, Chu Chu, Wangqian Zhang, Li Gong, Huadong Zhao, Bo Jia, Dakuan Gao, Lei Shang, Wei Zhang, Qingdong Guo
Purpose: Glioblastoma is the most common and aggressive type of primary brain malignancy and is associated with a poor prognosis. Previously, we found that phosphatase of regenerating liver-3 (PRL-3) was significantly up-regulated in glioblastoma as determined by a microarray analysis. However, the function of PRL-3 in glioblastoma remains unknown. We aimed to investigate the clinical relationship between PRL-3 and glioblastoma, and uncover the mechanisms of PRL-3 in the process of glioblastoma. Methods: PRL-3 expression was evaluated in 61 glioblastoma samples and 4 cell lines by RT-qPCR and immunohistochemistry...
2018: Theranostics
Yaqiong Liu, Yi Fan, Xiaoyu Wang, Zijian Huang, Kun Shi, Bei Zhou
Cervical cancer is one of the most common gynecological malignancies. Mousasi 2 (Msi2) is a RNA-binding protein that regulates various key cellular functions and has emerged as a crucial regulator of cancer development. However, the clinical significance and biological functions of Msi2 in cervical cancer remain unknown. The current study assessed the expression of Msi2 mRNA using reverse transcription-quantitative polymerase chain reaction. Furthermore, the expression of Msi2 was examined in 162 cervical cancer samples using immunohistochemistry and the association between Msi2 expression and patient clinicopathological features was analyzed...
April 2018: Oncology Letters
Xiu-Liang Xia, Dong Xue, Ting-Hai Xiang, Huai-Yong Xu, De-Kun Song, Pei-Guang Cheng, Jian-Qiang Wang
The clinical significance and essential role of long non-coding RNA colorectal neoplasia differentially expressed (lncRNA CRNDE) have been well illuminated in various cancers. However, the function of CRNDE in intrahepatic cholangiocarcinoma (IHCC) has not been reported at present. The aim of the present study was to investigate the role of CRNDE in IHCC. Firstly, the relative expression of CRNDE was observed to be upregulated in IHCC cell lines and tissues. And high CRNDE expression was statistically associated with IHCC differentiation grade, lymph node metastasis, tumor-nodes-metastasis (TNM) stage and size...
April 2018: Oncology Letters
F Hinten, A Molijn, L Eckhardt, L F A G Massuger, W Quint, P Bult, J Bulten, W J G Melchers, J A de Hullu
BACKGROUND: Two etiologic pathways for vulvar squamous cell carcinoma (SCC) are described: in a background of lichen sclerosus and/or differentiated vulvar intraepithelial neoplasia and related to high-risk human papillomavirus (HPV) infection with high grade squamous intraepithelial lesion (HSIL) as precursor. The aim was to compare the predilection site and survival of HPV-related to non HPV-related vulvar SCCs. METHODS: Data of patients treated for primary vulvar SCC at the Radboudumc between March 1988 and January 2015 were analyzed...
March 16, 2018: Gynecologic Oncology
Nesly Dotan, Vera Gayder, Itai Bloch, Maayan Gal
Calcineurin is a phosphatase that targets the transcription factor, nuclear factor of activated T-cells (NFAT) dephosphorylates multiple sites along NFAT's regulatory domain. The calcineurin-NFAT complex interaction is mediated through two conserved binding motifs known as the PxIxIT and LxVP, which are located at the N- and C- terminus to the phosphorylation sites. The vast range of cellular processes regulated by the calcineurin-NFAT interaction has aroused great interest in the investigation of the structural aspects that govern their complex formation and in the discovery of protein-protein interaction inhibitors; the latter interfere with calcineurin-NFAT complex formation while keeping calcineurin's catalytic site free...
March 16, 2018: Analytical Biochemistry
Daiju Yamazaki, Takashi Kitaguchi, Masakazu Ishimura, Tomohiko Taniguchi, Atsuhiro Yamanishi, Daisuke Saji, Etsushi Takahashi, Masao Oguchi, Yuta Moriyama, Sanae Maeda, Kaori Miyamoto, Kaoru Morimura, Hiroki Ohnaka, Hiroyuki Tashibu, Yuko Sekino, Norimasa Miyamoto, Yasunari Kanda
Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are expected to become a useful tool for proarrhythmia risk prediction in the non-clinical drug development phase. Several features including electrophysiological properties, ion channel expression profile and drug responses were investigated using commercially available hiPSC-CMs, such as iCell-CMs and Cor.4U-CMs. Although drug-induced arrhythmia has been extensively examined by microelectrode array (MEA) assays in iCell-CMs, it has not been fully understood an availability of Cor...
March 3, 2018: Journal of Pharmacological Sciences
David Kirkland, Paul Fowler
Trimethylolpropane triacrylate (TMPTA) is a trifunctional acrylate monomer which polymerizes rapidly when exposed to sources of free radicals. It is widely used as a reactive diluent and polymer building block in the formulation of overprint varnishes, inks and a variety of wood, plastic and metal coatings. TMPTA has been tested in a range of in vitro and in vivo genotoxicity tests. There is no clear evidence of induction of gene mutations by TMPTA in bacteria or mammalian cells in vitro, but there is evidence of clastogenicity from induction of small colony tk mutants in the mouse lymphoma assay, and also induction of micronuclei and chromosomal aberrations...
April 2018: Mutation Research
Jing Huang, Peng Guo, Marsha A Moses
The acquisition of the angiogenic phenotype is an essential component of the escape from tumor dormancy. Although several classic in vitro assays (e.g., proliferation, migration, and others) and in vivo models have been developed to investigate and characterize angiogenic and non-angiogenic cell phenotypes, these methods are time and labor intensive, and often require expensive reagents and instruments, as well as significant expertise. In a recent study, we used a novel quantitative phase imaging (QPI) technique to conduct time-lapse and labeling-free characterizations of angiogenic and non-angiogenic human osteosarcoma KHOS cells...
February 16, 2018: Journal of Visualized Experiments: JoVE
Xiuguo Yu, Jianpei Zhao, Yaguang He
PURPOSE: Recently, long noncoding RNAs (lncRNAs) have caught more attention for their role in tumor progression. Colon cancer is one of these ordinary malignant tumors. This study aimed to identify how lnc RNA PVT1 affects the progression of colon cancer. METHODS: PVT1 expression of both colon cancer cell tissue and 60 paired cancer and peri-tumoral tissue samples was detected by real-time quantitative polymerase chain reaction (RT-qPCR). The associations between lnc RNA PVT1 expression level and clinicopathological characteristics and patients' disease-free survival rate were evaluated...
January 2018: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
Yuta Kasagi, Prasanna M Chandramouleeswaran, Kelly A Whelan, Koji Tanaka, Veronique Giroux, Medha Sharma, Joshua Wang, Alain J Benitez, Maureen DeMarshall, John W Tobias, Kathryn E Hamilton, Gary W Falk, Jonathan M Spergel, Andres J Klein-Szanto, Anil K Rustgi, Amanda B Muir, Hiroshi Nakagawa
Background & Aims: Aberrations in the esophageal proliferation-differentiation gradient are histologic hallmarks in eosinophilic esophagitis (EoE) and gastroesophageal reflux disease. A reliable protocol to grow 3-dimensional (3D) esophageal organoids is needed to study esophageal epithelial homeostasis under physiological and pathologic conditions. Methods: We modified keratinocyte-serum free medium to grow 3D organoids from endoscopic esophageal biopsies, immortalized human esophageal epithelial cells, and murine esophagi...
March 2018: Cellular and Molecular Gastroenterology and Hepatology
Jun-Yi Wu, Zhong-Xia Wang, Guang Zhang, Xian Lu, Guang-Hui Qiang, Wei Hu, An-Lai Ji, Jun-Hua Wu, Chun-Ping Jiang
Purpose: FTY720, known as fingolimod, is a new immunosuppressive agent with effective anticancer properties. Although it was recently confirmed that FTY720 inhibits cancer cell proliferation, FTY720 can also induce protective autophagy and reduce cytotoxicity. Blocking autophagy with Beclin 1 siRNA after treatment with FTY720 promotes apoptosis. The objective of this study was to enhance the anticancer effect of FTY720 in hepatocellular carcinoma (HCC) by targeted co-delivery of FTY720 and Beclin 1 siRNA using calcium phosphate (CaP) nanoparticles (NPs)...
2018: International Journal of Nanomedicine
Ingrid Zyserman, Deboprosad Mondal, Francisco Sarabia, James H McKerrow, William R Roush, Anjan Debnath
Primary amebic meningoencephalitis (PAM) is a rapidly fatal infection caused by the free-living ameba Naegleria fowleri. PAM occurs principally in healthy children of less than 13 years old with a history of recent exposure to warm fresh water. While as yet not a reportable disease, the Centers for Disease Control and Prevention (CDC) documents a total of 143 cases in the United States. Only four patients have survived. Infection results from water containing N. fowleri entering the nose, followed by migration of the amebae to the brain...
March 15, 2018: Experimental Parasitology
Po-Hsiang Wang, Anna N Khusnutdinova, Fei Luo, Johnny Xiao, Kayla Nemr, Robert Flick, Greg Brown, Radhakrishnan Mahadevan, Elizabeth A Edwards, Alexander F Yakunin
Prenylated flavin mononucleotide (prFMN) is a recently discovered cofactor required by the UbiD family of reversible decarboxylases involved in ubiquinone biosynthesis, biological decomposition of lignin, and biotransformation of aromatic compounds. This cofactor is synthesized by UbiX-like prenyltransferases catalyzing the transfer of the dimethylallyl moiety of dimethylallyl-monophosphate (DMAP) to FMN. The origin of DMAP for prFMN biosynthesis and the biochemical properties of free prFMN are unknown. We show that in Escherichia coli cells, DMAP can be produced by phosphorylating prenol using ThiM or dephosphorylating DMAPP using Nudix hydrolases...
March 13, 2018: Cell Chemical Biology
Mohamed Abdelwahab, Nehal Salahuddin, Mohamed Gaber, Maie Mousa
Norfloxacin (NOR), a well-known antibacterial agent is also known to have potential antitumor activity. In this study, NOR was immobilized into poly(3-hydroxybutyrate/polyethylene glycol‑nickel oxide (PHB/PEG-NiO) nanocomposites using different NiO contents. The NiO nanoparticles were prepared by sol-gel method and the nanocomposites were prepared by solution cast films. Physicochemical features of nanocomposites were monitored by XRD, FTIR, SEM, TEM and TGA. PHB/PEG-5%NiO nanocomposites showed high NOR loading efficiency (60%) and a long-sustained release in comparison with other carriers...
March 13, 2018: International Journal of Biological Macromolecules
Yu-Shui Ma, Zhi-Jun Wu, Rui-Zhen Bai, Hua Dong, Bing-Xue Xie, Xiao-Hong Wu, Xiao-Sheng Hang, Ai-Ning Liu, Xiao-Hui Jiang, Gao-Ren Wang, Jun-Jian Jiang, Wen-Huan Xu, Xiao-Ping Chen, Guang-Hong Tan, Da Fu, Ji-Bin Liu, Quan Liu
Metastatic invasion is the primary cause of treatment failure for GBM. EMT is one of the most important events in the invasion of GBM; therefore, understanding the molecular mechanisms of EMT is crucial for the treatment of GBM. In this study, high expression of DRR1 was identified to correlate with a shorter median overall and relapse-free survival. Loss-of-function assays using shDRR1 weakened the invasive potential of the GBM cell lines through regulation of EMT-markers. The expressions of p-AKT were significantly decreased after DRR-depletion in SHG44 and U373 cells...
March 13, 2018: Cancer Letters
Christelle Sanchez, Gabriel Mazzucchelli, Cécile Lambert, Fanny Comblain, Edwin DePauw, Yves Henrotin
OBJECTIVE: Osteoarthritis (OA) is characterized by cartilage degradation but also by other joint tissues modifications like subchondral bone sclerosis. In this study, we used a proteomic approach to compare secretome of osteoblast isolated from sclerotic (SC) or non sclerotic (NSC) area of OA subchondral bone. DESIGN: Secretome was analyzed using differential quantitative and relative label free analysis on nanoUPLC G2 HDMS system. mRNA of the more differentially secreted proteins were quantified by RT-PCR in cell culture from 5 other patients...
2018: PloS One
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