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https://www.readbyqxmd.com/read/29775819/facile-synthesis-of-yolk-shell-structured-monodisperse-mesoporous-organosilica-nanoparticles-by-a-mild-alkalescent-etching-approach
#1
Jun Tao, Meng Dang, Xiaodan Su, Qing Hao, Junjie Zhang, Xiaobo Ma, Guangming Lu, Yunlei Zhang, Ying Tian, Lixing Weng, Zhaogang Teng, Lianhui Wang
In the work, yolk-shell structured mesoporous organosilica nanoparticles (YSMONs) are successfully prepared by a mild alkalescent etching approach. The method is very convenient, in which mesostructured organosilica nanospheres are directly transformed into yolk-shell structures after etching with mild alkalescent solution (e.g. sodium carbonate solution). The prepared YSMONs have ethane-bridged frameworks, a monodisperse diameter (320 nm), a large pore volume (1.0 cm3  g-1 ), a uniform mesopore (2.4 nm) and a high surface area (1327 m2  g-1 )...
May 15, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29775807/fir-efficacy-safety-and-biomarker-analysis-of-a-phase-ii-open-label-study-of-atezolizumab-in-pd-l1-selected-patients-with-non-small-cell-lung-cancer
#2
David R Spigel, Jamie E Chaft, Scott Gettinger, Bo H Chao, Luc Dirix, Peter Schmid, Laura Q M Chow, Rodney J Hicks, Larry Leon, Jill Fredrickson, Marcin Kowanetz, Alan Sandler, Roel Funke, Naiyer A Rizvi
INTRODUCTION: The FIR phase II study (NCT01846416) evaluated the efficacy and safety of anti-programmed death-ligand 1 (PD-L1) atezolizumab in advanced non-small-cell lung cancer (NSCLC) selected by tumor cell (TC) or tumor-infiltrating immune cell (IC) PD-L1 expression. METHODS: Patients with PD-L1 TC2/3 (PD-L1 staining on ≥5% of TC) or IC2/3 tumors (PD-L1 staining on ≥5% of IC; determined by SP142 PD-L1 immunohistochemistry assay) with paired fresh and archival histology samples were recruited into Cohort 1 (chemotherapy-naïve/>6 months between adjuvant chemotherapy and recurrence), Cohort 2 (≥ second-line without brain metastases), or Cohort 3 (≥ second-line with treated brain metastases)...
May 15, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29775582/src-3-coactivator-governs-dynamic-estrogen-induced-chromatin-looping-interactions-during-transcription
#3
Anil K Panigrahi, Charles E Foulds, Rainer B Lanz, Ross A Hamilton, Ping Yi, David M Lonard, Ming-Jer Tsai, Sophia Y Tsai, Bert W O'Malley
Enhancers are thought to activate transcription by physically contacting promoters via looping. However, direct assays demonstrating these contacts are required to mechanistically verify such cellular determinants of enhancer function. Here, we present versatile cell-free assays to further determine the role of enhancer-promoter contacts (EPCs). We demonstrate that EPC is linked to mutually stimulatory transcription at the enhancer and promoter in vitro. SRC-3 was identified as a critical looping determinant for the estradiol-(E2)-regulated GREB1 locus...
May 17, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29774072/twist-promotes-tumor-metastasis-in-basal-like-breast-cancer-by-transcriptionally-upregulating-ror1
#4
Jingying Cao, Xin Wang, Tao Dai, Yuanzhong Wu, Meifang Zhang, Renxian Cao, Ruhua Zhang, Gang Wang, Rou Jiang, Binhua P Zhou, Jian Shi, Tiebang Kang
Rationale: Twist is a key transcription factor for induction of epithelial-mesenchymal transition (EMT), which promotes cell migration, invasion, and cancer metastasis, confers cancer cells with stem cell-like characteristics, and provides therapeutic resistance. However, the functional roles and targeted genes of Twist in EMT and cancer progression remain elusive. Methods: The potential targeted genes of Twist were identified from the global transcriptomes of T47D/Twist cells by microarray analysis. EMT phenotype was detected by western blotting and immunofluorescence of marker proteins...
2018: Theranostics
https://www.readbyqxmd.com/read/29773662/validation-of-the-16-gene-recurrence-score-in-patients-with-locoregional-high-risk-renal-cell-carcinoma-from-a-phase-3-trial-of-adjuvant-sunitinib
#5
Brian I Rini, Bernard Escudier, Jean-Francois Martini, Ahmed Magheli, Christer Svedman, Margarita Lopatin, Dejan Knezevic, Audrey D Goddard, Phillip G Febbo, Rachel Li, Xun Lin, Olga Valota, Michael Staehler, Robert J Motzer, Alain Ravaud
PURPOSE: Adjuvant sunitinib prolonged disease-free survival (DFS) (hazard ratio [HR] 0.76) in patients with locoregional high-risk renal cell carcinoma (RCC) in the S-TRAC trial (ClinicalTrials.gov NCT00375674). The 16-gene Recurrence Score (RS) assay was previously developed and validated to estimate risk for disease recurrence in patients with RCC post-nephrectomy. This analysis further validated the prognostic value of RS assay in patients from S-TRAC and explored association of RS results with prediction of sunitinib benefit...
May 17, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29773494/plin3-is-up-regulated-and-correlates-with-poor-prognosis-in-clear-cell-renal-cell-carcinoma
#6
Keshan Wang, HaiLong Ruan, ZhengShuai Song, Qi Cao, Lin Bao, Di Liu, TianBo Xu, HaiBing Xiao, Cheng Wang, Gong Cheng, JunWei Tong, XianGui Meng, HongMei Yang, Ke Chen, XiaoPing Zhang
BACKGROUND: PLIN3, one of the members of the perilipin family, has been reported to be involved in the formation and accumulation of lipid droplets. However, the expression levels and diagnostic and prognostic value of PLIN3 in renal cell carcinoma (RCC) remain unclear. METHODS: Bioinformatic analysis was used to assess the levels of PLIN3 and the correlation between PLIN3 levels and clinicopathological parameters in renal cancer. The expression levels of PLIN3 were determined in human RCC tissues and cell lines by western blot, immunofluorescence and immunohistochemistry assays...
May 14, 2018: Urologic Oncology
https://www.readbyqxmd.com/read/29770592/particles-of-vaterite-a-metastable-caco-3-polymorph-exhibit-high-biocompatibility-for-human-osteoblasts-and-endothelial-cells-and-may-serve-as-a-biomaterial-for-rapid-bone-regeneration
#7
Romina Schröder, Laura Besch, Hannah Pohlit, Martin Panthöfer, Wilfried Roth, Holger Frey, Wolfgang Tremel, Ronald E Unger
We have previously described a promising alternative to conventional synthetic bone biomaterials using vaterite, a metastable CaCO3 polymorph, that increases the local Ca2+ concentration in vitro and leads to an over-saturation of phosphate, the primary bone mineral. This stimulates a natural bone-like mineralization in a short period of time. In this study, sterile and endotoxin-free vaterite particles were synthesized in a nearly quantitative yield. The 500-1000 nm vaterite particles did not exhibit any cytotoxic effects as measured by MTT, LDH or crystal violet assays on the human osteoblast cell line (MG-63) exposed to concentrations up to 500 μg/ml vaterite up to 72 hr...
May 16, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29770585/exploring-the-effect-of-vitamin-e-in-cancer-chemotherapy-a-biochemical-and-biophysical-insight
#8
Mustansir Bhori, Kanchanlata Singh, Thankamani Marar, C MuraliKrishna
Many oncologists contend that patient undergoing chemotherapy must avoid antioxidant supplementation as it may interfere with the activity of the drug. In the present investigation, we have explored the influence of vitamin E, a well known antioxidant on Camptothecin (CPT), a potent anti-cancer drug induced cell apoptosis and death of cervical cancer cells. HeLa cells were treated with different concentrations of CPT in presence and absence of 100μm vitamin E. Treated cells were subjected to cytotoxicity studies, catalase assay, DNA fragmentation assay, clonogenic assay and flow cytometry based apoptosis detection...
May 16, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29769123/obesity-impairs-male-fertility-through-long-term-effects-on-spermatogenesis
#9
Yan-Fei Jia, Qian Feng, Zheng-Yan Ge, Ying Guo, Fang Zhou, Kai-Shu Zhang, Xiao-Wei Wang, Wen-Hong Lu, Xiao-Wei Liang, Yi-Qun Gu
OBJECTIVE: This study aimed to investigate the effect and possible underlying mechanisms of high-fat diet-induced obesity on spermatogenesis in male rats. METHODS: A total of 45 male rats were randomly divided into control (n = 15, normal diet) and obesity groups (n = 30, high-fat diet) and were fed for 16 weeks. Body weight and organ indexes were determined after sacrifice. Indicators of reproductive function, including sperm count, sperm motility, apoptosis of spermatogenic cells, and oxidative stress levels, were measured...
May 16, 2018: BMC Urology
https://www.readbyqxmd.com/read/29768203/unconventional-secretion-mediates-the-trans-cellular-spreading-of-tau
#10
Taxiarchis Katsinelos, Marcel Zeitler, Eleni Dimou, Andromachi Karakatsani, Hans-Michael Müller, Eliana Nachman, Julia P Steringer, Carmen Ruiz de Almodovar, Walter Nickel, Thomas R Jahn
The progressive deposition of misfolded hyperphosphorylated tau is a pathological hallmark of tauopathies, including Alzheimer's disease. However, the underlying molecular mechanisms governing the intercellular spreading of tau species remain elusive. Here, we show that full-length soluble tau is unconventionally secreted by direct translocation across the plasma membrane. Increased secretion is favored by tau hyperphosphorylation, which provokes microtubule detachment and increases the availability of free protein inside cells...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29767512/azide-and-dye-conjugated-coelenterazine-analogues-for-a-multiplex-molecular-imaging-platform
#11
Ryo Nishihara, Emi Hoshino, Yoshiki Kakudate, Satoshi Kishigami, Naoko Iwasawa, Shin-Ichi Sasaki, Takahiro Nakajima, Moritoshi Sato, Shigeru Nishiyama, Daniel Citterio, Koji Suzuki, Sung Bae Kim
Native coelenterazine (nCTZ) is a common substrate to most marine luciferases and photoproteins. In this study, nine novel dye- and azide-conjugated CTZ analogues were synthesized by conjugating a series of fluorescent dyes or an azide group to the C-2 or C-6 position of the nCTZ backbone to obtain bulkiness-driven substrate specificity and potential chemiluminescence/bioluminescence resonance energy transfer (C/BRET). The investigation on the optical properties revealed that azide-conjugated CTZs emit greatly biased bioluminescence to ALucs and ca...
May 16, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29766649/lysyl-oxidase-a-colorectal-cancer-biomarker-of-lung-and-hepatic-metastasis
#12
Yun Liu, Guanghui Wang, Zhonglin Liang, Zubing Mei, Tingyu Wu, Ang Cui, Chenying Liu, Long Cui
BACKGROUND: Colorectal cancer (CRC) is a common and lethal disease in which distant metastasis remains the primary cause of death. Paradoxical roles of LOX have been reported in CRC, and the intracellular function of LOX has also recently been determined. Correlations of LOX expression and its intracellular localization with clinicopathological features in CRC patients remain largely unknown. The aim of the present study was to explore the potential roles of LOX in CRC. METHODS: LOX messenger RNA expression was assayed by quantitative PCR in eight paired normal mucosa and tumor tissues...
May 15, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29765561/a-pilot-study-of-peptide-vaccines-for-vegf-receptor-1-and-2-in-patients-with-recurrent-progressive-high-grade-glioma
#13
Shunsuke Shibao, Ryo Ueda, Katsuya Saito, Ryogo Kikuchi, Hideaki Nagashima, Atsuhiro Kojima, Hiroshi Kagami, Eriel Sandika Pareira, Hikaru Sasaki, Shinobu Noji, Yutaka Kawakami, Kazunari Yoshida, Masahiro Toda
Object: Early-phase clinical studies of glioma vaccines have shown feasibility and encouraging preliminary clinical activity. A vaccine that targets tumor angiogenesis factors in glioma microenvironment has not been reported. Therefore, we performed a pilot study to evaluate the safety and immunogenicity of a novel vaccination targeting tumor angiogenesis with synthetic peptides for vascular endothelial growth factor (VEGF) receptor epitopes in patients with recurrent/progressive high grade gliomas...
April 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29765228/role-of-mir-613-as-a-tumor-suppressor-in-glioma-cells-by-targeting-sox9
#14
Qiuling Sang, Xuejuan Liu, Daju Sun
Background and objectives: MicroRNA-613 (miR-613), a novel cancer-related microRNA, has been shown to be responsible for the inhibition of tumor development and progression in various cancers. We aimed to investigate the biological function and regulatory mechanisms of miR-613 in gliomas. Materials and methods: miR-613 expression were detected by qRT-PCR assays in glioma tissues and cell lines. Cell Counting Kit-8 (CCK-8) assay, colony formation analysis, wound healing and transwell invasion assays were performed to evaluate cell proliferation, colony formation, migration and invasion abilities...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29764950/cagy-dependent-regulation-of-type-iv-secretion-in-helicobacter-pylori-is-associated-with-alterations-in-integrin-binding
#15
Emma C Skoog, Vasilios A Morikis, Miriam E Martin, Greg A Foster, Lucy P Cai, Lori M Hansen, Beibei Li, Jennifer A Gaddy, Scott I Simon, Jay V Solnick
Strains of Helicobacter pylori that cause ulcer or gastric cancer typically express a type IV secretion system (T4SS) encoded by the cag pathogenicity island ( cag PAI). CagY is an ortholog of VirB10 that, unlike other VirB10 orthologs, has a large middle repeat region (MRR) with extensive repetitive sequence motifs, which undergo CD4+ T cell-dependent recombination during infection of mice. Recombination in the CagY MRR reduces T4SS function, diminishes the host inflammatory response, and enables the bacteria to colonize at a higher density...
May 15, 2018: MBio
https://www.readbyqxmd.com/read/29764424/long-non-coding-rna-neat1-modulated-abnormal-lipolysis-via-atgl-drives-hepatocellular-carcinoma-proliferation
#16
Xirui Liu, Yingjian Liang, Ruipeng Song, Guangchao Yang, Jihua Han, Yaliang Lan, Shangha Pan, Mingxi Zhu, Yao Liu, Yan Wang, Fanzheng Meng, Yifeng Cui, Jiabei Wang, Bo Zhang, Xuan Song, Zhaoyang Lu, Tongsen Zheng, Lianxin Liu
BACKGROUND: Abnormal metabolism, including abnormal lipid metabolism, is a hallmark of cancer cells. Some studies have demonstrated that the lipogenic pathway might promote the development of hepatocellular carcinoma (HCC). However, the role of the lipolytic pathway in HCC has not been elucidated. METHODS: We compared levels of adipose triglyceride lipase (ATGL) in human HCC and healthy liver tissues by real time PCR, western blot and immunohistochemistry. We measured diacylglycerol(DAG) and free fatty acid (FFA) levels in HCC cells driven by the NEAT1-ATGL axis and in HCC tissues...
May 15, 2018: Molecular Cancer
https://www.readbyqxmd.com/read/29764213/a-novel-non-invasive-strategy-for-low-level-laser-induced-cancer-therapy-by-using-new-ag-zno-and-nd-zno-functionalized-reduced-graphene-oxide-nanocomposites
#17
Saeed Jafarirad, Ebrahim Hammami Torghabe, Seyed Hosseyn Rasta, Roya Salehi
In the present research, an effective drug-free approach was developed to kill MCF7 breast cancer cells using low-level laser therapy (LLLT) combined with reduced graphene oxide (rGO)-based hybrid nanocomposites (NCs). Here, fruit extract of Rosa canina was used for the first time to obtain the rGO/ZnO, Ag-ZnO/rGO and Nd-ZnO/rGO NCs by green synthesis. Physico/photochemical properties of these NCs were evaluated using FTIR, XRD, Raman, XPS, SEM/EDX, UV-Vis, DLS and AFM. The potential of the as-synthesized NCs on ROS generating and antioxidant activity were assessed by DPPH...
May 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29763759/an-eco-benign-synthesis-of-agnps-using-aqueous-extract-of-longan-fruit-peel-antiproliferative-response-against-human-breast-cancer-cell-line-mcf-7-antioxidant-and-photocatalytic-deprivation-of-methylene-blue
#18
Arif Ullah Khan, Qipeng Yuan, Zia Ul Haq Khan, Aftab Ahmad, Faheem Ullah Khan, Kamran Tahir, Muhammad Shakeel, Sadeeq Ullah
Plants mediated synthesis of noble metal nanoparticles is encountered as a clean, environment friendly, lucrative and benign loom. The current study consists of clean and green synthesis of Silver nanoparticles (AgNPs). Phytoconstituents from Longan (Euphorbia longana Lam.) fruit peel were used to reduce Ag+ into AgNPs. Different analytical techniques i.e. UV-vis Spectroscopy, X-ray diffraction spectroscopy (XRD), electron dispersive X-ray (EDX), High-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared spectroscopy (FTIR) were used to analyze the synthesized AgNPs...
May 7, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29762844/free-fatty-acids-mediates-human-umbilical-vein-endothelial-cells-inflammation-through-toll-like-receptor-4
#19
L Chen, C-X Yu, B Song, W Cai, C Liu, Q-B Guan
OBJECTIVE: To investigate the role of Toll-like receptor-4 (TLR4) in the free fatty acids (FFAs) induced human umbilical vein endothelial cells (HUVECs) inflammation and to explore the underlying mechanisms. MATERIALS AND METHODS: HUVECs and HEK293 cell lines were obtained from Shanghai Type Culture Collection. Cell counting kit-8 (CCK8) and flow cytometry (FCM) were performed to examine the cell viability and apoptosis rate of HUVECs induced by FFAs treatments with or without infection of toll-like receptor-4 interference (TLR4i) adenovirus...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29762617/anticancer-potential-against-cervix-cancer-hela-cell-line-of-probiotic-lactobacillus-casei-and-lactobacillus-paracasei-strains-isolated-from-human-breast-milk
#20
Muhammad Shahid Riaz Rajoka, Haobin Zhao, Yao Lu, Ziyang Lian, Na Li, Nazim Hussain, Dongyan Shao, Mingliang Jin, Qi Li, Junling Shi
Lactic acid bacteria have been categorized as probiotics and play a crucial role in human health by stimulating the supply of nutrients, shaping the immune system, and preventing the colonization of pathogenic microbes. This study investigated the mechanisms for the action of three potential probiotic Lactobacillus strains: Lactobacillus casei SR1, Lactobacillus casei SR2, and Lactobacillus paracasei SR4 isolated from human breast milk. These Lactobacillus strains were identified via 16S DNA sequencing and characterized via biochemical assays including acid resistance, bile resistance, antioxidant activity, and antibiotic susceptibility...
May 15, 2018: Food & Function
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