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https://www.readbyqxmd.com/read/28549350/an-anti-cancer-wxxxe-containing-azurin-polypeptide-inhibits-rac1-dependent-stat3-and-erk-gsk-3%C3%AE-signaling-in-breast-cancer-cells
#1
Zhe Zhang, Zhiyong Luo, Wenpu Min, Lin Zhang, Yaqun Wu, Xiaopeng Hu
In our previous study, we characterized a mycoplasmal small GTPase-like polypeptide of 240 amino acids that possesses an N-terminal WVLGE sequence. The N-terminal WVLGE sequence promotes activation of Rac1 and subsequent host cancer cell proliferation. To investigate the function of the WxxxE motif in the interaction with Rac1 and host tumor progression, we synthesized a 35-amino acid WVLGE-containing polypeptide derived from a cell-penetrating peptide derived from the azurin protein. We verified that the WVLGE-containing polypeptide targeted MCF-7 cells rather than MCF-10A cells...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549295/structural-characterization-of-astaxanthin-aggregates-as-revealed-by-analysis-and-simulation-of-optical-spectra
#2
Liping Lu, Taoping Hu, Zhigang Xu
Carotenoids can self-assemble in hydrated polar solvents to form J- or H-type aggregates, inducing dramatic changes in photophysical properties. Here, we measured absorption and emission spectra of astaxanthin in ethanol-water solution using ultraviolet-visible and fluorescence spectrometers. Two types of aggregates were distinguished in mixed solution at different water contents by absorption spectra. After addition of water, all probed samples immediately formed H-aggregates with maximum blue shift of 31nm...
May 15, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28549266/self-cascade-reaction-catalyzed-by-cuo-nanoparticle-based-dual-functional-enzyme-mimics
#3
Ai-Ling Hu, Hao-Hua Deng, Xiao-Qing Zheng, Yan-Yu Wu, Xiu-Ling Lin, Ai-Lin Liu, Xing-Hua Xia, Hua-Ping Peng, Wei Chen, Guo-Lin Hong
It is desirable but challenging to assemble various biomimetic properties into a functional catalytic cascade system. In this work, cupric oxide nanoparticles were investigated as oxidase mimics for the aerobic oxidation of cysteine to cystine with the generation of hydrogen peroxide. Coupling this property with the peroxidase-like activity of CuO nanoparticles, we constructed a self-organized cascade reaction system based on a single-component nanozyme, which includes the oxidation of cysteine to yield cystine and hydrogen peroxide and the hydrogen peroxide-mediated oxidation of terephthalic acid to produce a fluorescence change...
May 19, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28549232/identification-and-characterization-of-transcription-factor-zmereb94-involved-in-starch-synthesis-in-maize
#4
Hui Li, Qianlin Xiao, Chunxia Zhang, Jia Du, Xiao Li, Huanhuan Huang, Bin Wei, Yangping Li, Guowu Yu, Hanmei Liu, Yufeng Hu, Yinghong Liu, Junjie Zhang, Yubi Huang
Maize is an important food crop and industrial material owing to its high starch content. However, the mechanism of starch synthesis is not fully elucidated, especially with regard to the expression and regulation of starch synthetic genes. The APETALA2/Ethylene Responsive Factor (AP2/ERF) family plays a crucial role in various biological processes via regulating gene expression. In this study, the ZmEREB94 gene was identified through co-expression analysis. Bioinformatics analysis confirmed that ZmEREB94 belongs to the AP2/ERF family...
May 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28549217/surface-enhanced-raman-scattering-active-gold-nanoparticles-with-enzyme-mimicking-activities-for-measuring-glucose-and-lactate-in-living-tissues
#5
Yihui Hu, Hanjun Cheng, Xiaozhi Zhao, Jiangjiexing Wu, Faheem Muhammad, Shichao Lin, Jian He, Liqi Zhou, Chengping Zhang, Yu Deng, Peng Wang, Zhengyang Zhou, Shuming Nie, Hui Wei
Gold nanoparticles (AuNPs) with simultaneous plasmonic and biocatalytic properties provide a promising approach to developing versatile bioassays. However, the combination of AuNPs' intrinsic enzyme mimicking properties with their surface-enhanced Ra-man scattering (SERS) activities has yet to be explored. Here we designed a peroxidase mimicking nanozyme by in situ growing AuNPs into a highly porous and thermally stable metal-organic framework (MOF) called MIL-101. The obtained AuNPs@MIL-101 nanozymes acted as the peroxidase mimics to oxidize Raman inactive reporter leucomalachite green (LMG) into the active malachite green (MG) with hydrogen peroxide, and simultaneously as the SERS substrates to enhance the Raman signals of the as-produced MG...
May 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28549152/mdsnrk1-1-interacts-with-mdjaz18-to-regulate-sucrose-induced-anthocyanin-and-proanthocyanidin-accumulation-in-apple
#6
Xiao-Juan Liu, Xiu-Hong An, Xin Liu, Da-Gang Hu, Xiao-Fei Wang, Chun-Xiang You, Yu-Jin Hao
Sugars induce anthocyanin biosynthesis in plants. As a conserved energy sensor, SnRK1 (SNF1-related kinase 1) is involved in sucrose-induced anthocyanin accumulation. However, the exact molecular mechanism by which SnRK1 regulates the biosynthesis of anthocyanins and proanthocyanidins (PAs) in response to sucrose in plants is not clear. In this study, it was found that MdSnRK1.1 interacted with MdJAZ18 protein which acts as a repressor in the jasmonate (JA) signaling pathway. MdSnRK1.1 then phosphorylated MdJAZ18 to facilitate its 26S proteasome-mediated degradation, which released MdbHLH3 thereby activating the expression of the regulatory and structural genes, thus finally promoting the biosynthesis of anthocyanins and PAs...
May 25, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28548966/targeting-shp-1-stat3-signaling-a-promising-therapeutic-approach-for-the-treatment-of-cholangiocarcinoma
#7
Ming-Hung Hu, Li-Ju Chen, Yen-Lin Chen, Ming-Shen Tsai, Chung-Wai Shiau, Tzu-I Chao, Chun-Yu Liu, Jia-Horng Kao, Kuen-Feng Chen
Sorafenib is a multiple kinase inhibitor which targets Raf kinases, VEGFR, and PDGFR and is approved for the treatment of hepatocellular carcinoma (HCC). Previously, we found that p-STAT3 is a major target of SC-43, a sorafenib derivative. In this study, we report that SC-43-induced apoptosis in cholangiocarcinoma (CCA) via a novel mechanism. Three CCA cell lines (HuCCT-1, KKU-100 and CGCCA) were treated with SC-43 to determine their sensitivity to SC-43-induced cell death and apoptosis. We found that SC-43 activated SH2 domain-containing phosphatase 1 (SHP-1) activity, leading to p-STAT3 and downstream cyclin B1 and Cdc2 downregulation, which induced G2-M arrest and apoptotic cell death...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548885/metformin-inhibits-p-gingivalis-lipopolysaccharide-lps-influenced-inflammatory-response-in-human-gingival-fibroblasts-via-regulating-activating-transcription-factor-3-atf3-expression
#8
Wenyan Kang, Ting Wang, Zhekai Hu, Feng Liu, Yundong Sun, Shaohua Ge
BACKGROUND: Chronic periodontitis is one of the most prevalent oral diseases, which is associated with Porphyromonas gingivalis (P. gingivalis) Lipopolysaccharide (LPS) infection, and has profound effects on type 2 diabetes mellitus (DM2). Metformin, a well-known antidiabetic agent, has been reported to exert anti-inflammatory effects on various cells. This study aimed to investigate the role of metformin on LPS-influenced inflammatory response in human gingival fibroblasts (HGFs). METHODS: Dose-dependent additive effects of metformin on LPS-influenced HGFs were detected...
May 26, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28548860/direct-imaging-of-kinetic-pathways-of-atomic-diffusion-in-monolayer-molybdenum-disulfide
#9
Jinhua Hong, Yuhao Pan, Zhixin Hu, Danhui Lv, Chuanhong Jin, Wei Ji, Jun Yuan, Ze Zhang
Direct observation of atomic migration both on and below surfaces is a long-standing but important challenge in materials science as diffusion is one of the most elementary processes essential to many vital material behaviors. Probing the kinetic pathways, including metastable or even transition states involved down to atomic scale, holds the key to the underlying physical mechanisms. Here, we applied aberration-corrected transmission electron microscopy (TEM) to demon-strate direct atomic-scale imaging and quasi-real-time tracking of diffusion of Mo adatoms and vacancies in monolayer MoS2, an important 2D transition metal dichalcogenide (TMD) system...
May 26, 2017: Nano Letters
https://www.readbyqxmd.com/read/28548559/the-yucatan-minipig-tmj-disc-structure-function-relationships-support-its-suitability-for-human-comparative-studies
#10
Natalia Vapniarsky, Ashkan Aryaei, Boaz Arzi, Jerry C Hu, David C Hatcher, Kyriacos A Athanasiou
Frequent involvement of the disc in temporomandibular joint (TMJ) disorders warrants attempts to tissue engineer TMJ disc replacements. Physiologically, a great degree of similarity is seen between humans and farm pigs (FPs), but the pig's rapid growth confers a significant challenge for in vivo experiments. Minipigs have a slower growth rate and are smaller than FPs, but minipig TMJ discs have yet to be fully characterized. The objective of this study was to determine the suitability of the minipig for TMJ studies by extensive structural and functional characterization...
May 26, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28548214/the-performance-of-malbac-and-mda-methods-in-the-identification-of-concurrent-mutations-and-aneuploidy-screening-to-diagnose-beta-thalassaemia-disorders-at-the-single-and-multiple-cell-levels
#11
WeiQiang Liu, HuiMin Zhang, Dan Hu, SiJia Lu, XiaoFang Sun
AIM: To select an optimal whole-genome amplification (WGA) method to improve the efficiency of the preimplantation genetic diagnosis and screening (PGD/PGS) of beta-thalassaemia disorders. METHODS: Fifty-seven fibroblast samples with defined beta-thalassaemia variations and forty-eight single-blastomere samples were amplified from single-, two-, and five-cell samples by multiple annealing and looping-based amplification cycles (MALBAC) and the multiple displacement amplification (MDA) method...
May 26, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28548168/tuning-the-seebeck-effect-in-c60-based-hybrid-thermoelectric-devices-through-temperature-dependent-surface-polarization-and-thermally-modulated-interface-dipoles
#12
Yuchun Liu, Ling Xu, Chen Zhao, Ming Shao, Bin Hu
Fullerene (C60) is an important n-type organic semiconductor with high electron mobility and low thermal conductivity. In this work, we report the experimental results on the tunable Seebeck effect of C60 hybrid thin-film devices by adopting different oxide layers. After inserting n-type high-dielectric constant titanium oxide (TiOx) and zinc oxide (ZnO) layers, we observed a significantly enhanced n-type Seebeck effect in oxide/C60 hybrid devices with Seebeck coefficients of -5.8 mV K(-1) for TiOx/C60 and -2...
May 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28548140/photobleaching-of-chromophoric-dissolved-organic-matter-cdom-in-the-yangtze-river-estuary-kinetics-and-effects-of-temperature-ph-and-salinity
#13
Guisheng Song, Yijie Li, Suzheng Hu, Guiju Li, Ruihua Zhao, Xin Sun, Huixiang Xie
The kinetics and temperature-, pH- and salinity-dependences of photobleaching of chromophoric dissolved organic matter (CDOM) in the Yangtze River estuary (YRE) were evaluated using laboratory solar-simulated irradiation and compared to those of Suwannee River humic substances (SRHSs). Nearly all CDOM in water at the head of the estuary (headwater herein) was photobleachable in both summer and winter, while significant fractions of CDOM (13-29%) were resistant to photobleaching in saltier waters. The photobleaching rate constant in the headwater was 25% higher in summer than that in winter...
May 26, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28548104/genomic-analysis-of-oesophageal-squamous-cell-carcinoma-identifies-alcohol-drinking-related-mutation-signature-and-genomic-alterations
#14
Jiang Chang, Wenle Tan, Zhiqiang Ling, Ruibin Xi, Mingming Shao, Mengjie Chen, Yingying Luo, Yanjie Zhao, Yun Liu, Xiancong Huang, Yuchao Xia, Jinlin Hu, Joel S Parker, David Marron, Qionghua Cui, Linna Peng, Jiahui Chu, Hongmin Li, Zhongli Du, Yaling Han, Wen Tan, Zhihua Liu, Qimin Zhan, Yun Li, Weimin Mao, Chen Wu, Dongxin Lin
Approximately half of the world's 500,000 new oesophageal squamous-cell carcinoma (ESCC) cases each year occur in China. Here, we show whole-genome sequencing of DNA and RNA in 94 Chinese individuals with ESCC. We identify six mutational signatures (E1-E6), and Signature E4 is unique in ESCC linked to alcohol intake and genetic variants in alcohol-metabolizing enzymes. We discover significantly recurrent mutations in 20 protein-coding genes, 4 long non-coding RNAs and 10 untranslational regions. Functional analyses show six genes that have recurrent copy-number variants in three squamous-cell carcinomas (oesophageal, head and neck and lung) significantly promote cancer cell proliferation, migration and invasion...
May 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28548086/corrigendum-1000-genomes-based-meta-analysis-identifies-10-novel-loci-for-kidney-function
#15
Mathias Gorski, Peter J van der Most, Alexander Teumer, Audrey Y Chu, Man Li, Vladan Mijatovic, Ilja M Nolte, Massimiliano Cocca, Daniel Taliun, Felicia Gomez, Yong Li, Bamidele Tayo, Adrienne Tin, Mary F Feitosa, Thor Aspelund, John Attia, Reiner Biffar, Murielle Bochud, Eric Boerwinkle, Ingrid Borecki, Erwin P Bottinger, Ming-Huei Chen, Vincent Chouraki, Marina Ciullo, Josef Coresh, Marilyn C Cornelis, Gary C Curhan, Adamo Pio d' Adamo, Abbas Dehghan, Laura Dengler, Jingzhong Ding, Gudny Eiriksdottir, Karlhans Endlich, Stefan Enroth, Tõnu Esko, Oscar H Franco, Paolo Gasparini, Christian Gieger, Giorgia Girotto, Omri Gottesman, Vilmundur Gudnason, Ulf Gyllensten, Stephen J Hancock, Tamara B Harris, Catherine Helmer, Simon Höllerer, Edith Hofer, Albert Hofman, Elizabeth G Holliday, Georg Homuth, Frank B Hu, Cornelia Huth, Nina Hutri-Kähönen, Shih-Jen Hwang, Medea Imboden, Åsa Johansson, Mika Kähönen, Wolfgang König, Holly Kramer, Bernhard K Krämer, Ashish Kumar, Zoltan Kutalik, Jean-Charles Lambert, Lenore J Launer, Terho Lehtimäki, Martin H de Borst, Gerjan Navis, Morris Swertz, Yongmei Liu, Kurt Lohman, Ruth J F Loos, Yingchang Lu, Leo-Pekka Lyytikäinen, Mark A McEvoy, Christa Meisinger, Thomas Meitinger, Andres Metspalu, Marie Metzger, Evelin Mihailov, Paul Mitchell, Matthias Nauck, Albertine J Oldehinkel, Matthias Olden, Brenda Wjh Penninx, Giorgio Pistis, Peter P Pramstaller, Nicole Probst-Hensch, Olli T Raitakari, Rainer Rettig, Paul M Ridker, Fernando Rivadeneira, Antonietta Robino, Sylvia E Rosas, Douglas Ruderfer, Daniela Ruggiero, Yasaman Saba, Cinzia Sala, Helena Schmidt, Reinhold Schmidt, Rodney J Scott, Sanaz Sedaghat, Albert V Smith, Rossella Sorice, Benedicte Stengel, Sylvia Stracke, Konstantin Strauch, Daniela Toniolo, Andre G Uitterlinden, Sheila Ulivi, Jorma S Viikari, Uwe Völker, Peter Vollenweider, Henry Völzke, Dragana Vuckovic, Melanie Waldenberger, Jie Jin Wang, Qiong Yang, Daniel I Chasman, Gerard Tromp, Harold Snieder, Iris M Heid, Caroline S Fox, Anna Köttgen, Cristian Pattaro, Carsten A Böger, Christian Fuchsberger
This corrects the article DOI: 10.1038/srep45040.
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28548030/everolimus-inhibited-multiple-isoforms-of-udp-glucuronosyltransferases-ugts
#16
Zuo Du, Guang Wang, Yun-Feng Cao, Cui-Min Hu, Kun Yang, Yong-Zhe Liu, Chun-Ze Zhang, Wei-Hua Zhang, Zhi-Tu Zhu, Hong-Zhi Sun, Xiao-Yu Sun, Mo Hong, Zhong-Ze Fang
1. Everolimus is an inhibitor of mammalian target of rapamycin (mTOR) and has been clinically utilized to prevent the rejection of organ transplants. This study aims to determine the inhibition of everolimus on the activity of phase II drug-metabolizing enzymes UDP-glucuronosyltransferases (UGTs). 2. The results showed that 100 uM of everolimus exerted more than 80% inhibition towards UGT1A1, -1A3, and -2B7. UGT1A3 and UGT2B7 were selected to elucidate the inhibition mechanism, and in silico docking showed that hydrogen bonds and hydrophobic interactions mainly contributed to the strong binding of everolimus towards the activity cavity of UGT1A3 and UGT2B7...
May 26, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28547894/internal-fixation-of-complicated-acetabular-fractures-directed-by-preoperative-surgery-with-3d-printing-models
#17
Zhao-Jie Liu, Jian Jia, Yin-Guang Zhang, Wei Tian, Xin Jin, Yong-Cheng Hu
The purpose of this article is to evaluate the efficacy and feasibility of preoperative surgery with 3D printing-assisted internal fixation of complicated acetabular fractures. A retrospective case review was performed for the above surgical procedure. A 23-year-old man was confirmed by radiological examination to have fractures of multiple ribs, with hemopneumothorax and communicated fractures of the left acetabulum. According to the Letounel and Judet classification, T-shaped fracture involving posterior wall was diagnosed...
May 26, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28547859/giant-cell-tumor-of-the-mobile-spine-occurring-in-pregnancy-a-case-report-and-literature-review
#18
Kai Zheng, Ming Xu, Bing Wang, Xiu-Chun Yu, Yong-Cheng Hu
Giant cell tumor (GCT) is a benign, locally aggressive tumor that rarely occurs in the spine. They usually occur in patients between 20 and 40 years of age; some patients with GCT present in hospital with pregnancy. The management of these patients can be challenging. The current study reports a case of GCT located in the sixth thoracic vertebra of a 31-year-old female at 34 weeks of gestation. An osteolytic lesion, 3.5 cm × 3.5 cm in diameter, was identified on CT. An MRI test of the lesion revealed a soft tissue mass involving the T 6-7 vertebrae, extending to the right pedicle of the T 6 vertebra and causing significant spinal cord compression...
May 26, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28547803/effects-of-maltose-and-lysine-treatment-on-coffee-aroma-by-flash-gas-chromatography-electronic-nose-and-gas-chromatography-mass-spectrometry
#19
He Yuqin, Zhang Haide, Wen Nana, Hu Rongsuo, Wu Guiping, Zeng Ying, Li Xiong, Miao Xiaodan
BACKGROUND: Arabica coffee is a subtropical agricultural product in China. Coffee undergoes a series of thermal reactions to form abundant volatile profiles after roasting, so it loses a lot of reducing sugars and amino acids. Adding carbonyl compounds with amino acids before roasting could ensure the nutrition and flavor of coffee. The technology is versatile for the development of coffee roasting process. This investigation evaluates the effects of combining maltose and lysine (Lys) to modify coffee aroma and the possibly related mechanisms...
May 26, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28547371/improvement-of-aquaponic-performance-through-micro-and-macro-nutrient-addition
#20
Dongyun Ru, Jikai Liu, Zhen Hu, Yina Zou, Liping Jiang, Xiaodian Cheng, Zhenting Lv
Aquaponics is one of the "zero waste" industry in the twenty-first century, and is considered to be one of the major trends for the future development of agriculture. However, the low nitrogen utilization efficiency (NUE) restricted its widely application. To date, many attempts have been conducted to improve its NUE. In the present study, effect of micro- and macro-nutrient addition on performance of tilapia-pak choi aquaponics was investigated. Results showed that the addition of micro- and macro-nutrients improved the growth of plant directly and facilitated fish physiology indirectly, which subsequently increased NUE of aquaponics from 40...
May 25, 2017: Environmental Science and Pollution Research International
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