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https://www.readbyqxmd.com/read/29205568/johnson-solids-anion-templated-silver-thiolate-clusters-capped-by-sulphonate
#1
Zhi Wang, Hai-Feng Su, Xing-Po Wang, Quan-Qin Zhao, Chen-Ho Tung, Di Sun, Lan-Sun Zheng
The sulphonates were incorporated into six novel high-nuclearity silver(I) thiolate clusters under the guidance of anion templates varied from S2-, SO42-, α-[Mo5O18]6-, β-[Mo5O18]6-, [Mo2O8]4-, to [Mo4O14(SO4)]6-. Single crystal X-ray analysis revealed that SD/Ag1, SD/Ag3, SD/Ag5 and SD/Ag6 are discrete [S@Ag60], [α-Mo5O18@Ag36], [Mo2O8@Ag30]2 and [Mo4O14(SO4)@Ag73] clusters, respectively, whereas SD/Ag2 and SD/Ag4 are one-dimensional (1D) chains based on the [SO4@Ag20] and [β-Mo5O18@Ag36] clusters subunits, respectively...
December 4, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29189898/immunogenicity-of-recombinant-vaccinia-virus-vaccines-co-expressing-gp3-gp5-of-european-prrsv-and-cap-protein-of-pcv2-in-pigs
#2
Jicheng Han, Haibin Ma, Liang Cao, Jie Jing, Pengpeng Xiao, Wenchao Sun, Changzhan Xie, Shubo Wen, Yiquan Li, Mingyao Tian, Huijun Lu, Ningyi Jin
Porcine reproductive and respiratory syndrome (PRRS) is almost always caused by the North American strain of PRRS virus (PRRSV) in China; the European genotype of PRRSV has emerged in China. The mixed infection of PRRSV and Porcine circovirus type 2 virus (PCV2) are always found in pigs and PRRSV-augmented PCV2 replication and serious clinical symptoms. Current vaccines cannot protect mixed European PRRSV and PCV2 infections. Therefore, the development of a safe and effective new vaccine to prevent and control the mixed infection of European PRRSV and PCV2 is both urgent and necessary...
November 30, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29160296/structure-of-the-fission-yeast-s-pombe-telomeric-tpz1-poz1-rap1-complex
#3
Jing Xue, Hongwen Chen, Jian Wu, Miho Takeuchi, Haruna Inoue, Yanmei Liu, Hong Sun, Yong Chen, Junko Kanoh, Ming Lei
Telomeric shelterin complex caps chromosome ends and plays a crucial role in telomere maintenance and protection. In the fission yeast Schizosaccharomyces pombe, shelterin is composed of telomeric single- and double-stranded DNA-binding protein subcomplexes Pot1-Tpz1 and Taz1-Rap1, which are bridged by their interacting protein Poz1. However, the structure of Poz1 and how Poz1 functions as an interaction hub in the shelterin complex remain unclear. Here we report the crystal structure of Poz1 in complex with Poz1-binding motifs of Tpz1 and Rap1...
November 21, 2017: Cell Research
https://www.readbyqxmd.com/read/29039911/halide-re-shelled-quantum-dot-inks-for-infrared-photovoltaics
#4
James Z Fan, Mengxia Liu, Oleksandr Voznyy, Bin Sun, Larissa Levina, Rafael Quintero-Bermudez, Min Liu, Olivier Ouellette, F Pelayo García de Arquer, Sjoerd Hoogland, Edward H Sargent
Colloidal quantum dots are promising materials for tandem solar cells that complement silicon and perovskites. These devices are fabricated from solution phase; however, existing methods for making infrared-bandgap CQD inks suffer agglomeration and fusion during solution exchange. Here we develop a ligand exchange that provides robust surface protection and thereby avoids aggregation. First, we exchanged long oleic acid ligands to a mixed system comprising medium-chain ammonium and anionic chloride ligands; we then reshelled the surface using short halides and pseudohalide ligands that enabled transfer to a polar solvent...
October 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28993266/a-protective-umbrella-nanoplatform-for-loading-icg-and-multi-modal-imaging-guided-phototherapy
#5
Jie Zhou, Lingchang Meng, Chong Sun, Weiran Ye, Chengqun Chen, Bin Du
In order to prevent the aggregation of ICG and enhance its stability, a novel nanoplatform (TiO2:Yb,Ho,F-β-CD@ICG/HA) was designed for NIR-induced phototherapy along with multi-mode imaging(UCL/MRI/Flu). In this nanosysytem: TiO2:Yb,Ho,F was used as upconversion materials and applied in vivo for the first time; β-CD acted as a "protective umbrella" to load separated ICG and avoid the low phototherapy efficiency because of its aggregation; HA was the capping agent of β-CD to prevent ICG unexpected leaking and a target to recognize CD44 receptor...
October 7, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28940759/the-bottle-gourd-genome-provides-insights-into-cucurbitaceae-evolution-and-facilitates-mapping-of-a-papaya-ring-spot-virus-resistance-locus
#6
Shan Wu, Md Shamimuzzaman, Honghe Sun, Jerome Salse, Xuelian Sui, Alan Wilder, Zujian Wu, Amnon Levi, Yong Xu, Kai-Shu Ling, Zhangjun Fei
Bottle gourd (Lagenaria siceraria) is an important vegetable crop as well as a rootstock for other cucurbit crops. In this study, we report a high-quality 313.4-Mb genome sequence of a bottle gourd inbred line, USVL1VR-Ls, with a scaffold N50 of 8.7 Mb and the longest of 19.0 Mb. About 98.3% of the assembled scaffolds are anchored to the 11 pseudomolecules. Our comparative genomic analysis identifies chromosome-level syntenic relationships between bottle gourd and other cucurbits, as well as lineage-specific gene family expansions in bottle gourd...
September 23, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28892364/bulky-surface-ligands-promote-surface-reactivities-of-ag141x12-s-adm-40-3-x-cl-br-i-nanoclusters-models-for-multiple-twinned-nanoparticles
#7
Liting Ren, Peng Yuan, Haifeng Su, Sami Malola, Shuichao Lin, Zichao Tang, Boon K Teo, Hannu Häkkinen, Lansun Zheng, Nanfeng Zheng
Surface ligands play important roles in controlling the size and shape of metal nanoparticles and their surface properties. In this work, we demonstrate that the use of bulky thiolate ligands, along with halides, as the surface capping agent promotes the formation of plasmonic multiple-twinned Ag nanoparticles with high surface reactivities. The title nanocluster [Ag141X12(S-Adm)40](3+) (where X = Cl, Br, I; S-Adm = 1-adamantanethiolate) has a multiple-shell structure with an Ag71 core protected by a shell of Ag70X12(S-Adm)40...
September 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28872849/thiol-induced-synthesis-of-phosphine-protected-gold-nanoclusters-with-atomic-precision-and-controlling-the-structure-by-ligand-metal-engineering
#8
Shan Jin, Wenjun Du, Shuxin Wang, Xi Kang, Man Chen, Daqiao Hu, Shuang Chen, Xuejuan Zou, Guodong Sun, Manzhou Zhu
Efficient synthesis of atomically precise phosphine-capped gold nanocluster (with >10 metal atoms) is important to deeply understand the relationship between structure and properties. Herein, we successfully utilize the thiol-induced synthesis method and obtain three atomically precise phosphine-protected gold nanoclusters. Single-crystal X-ray structural analysis reveals that the nanoclusters are formulated as [Au13(Dppm)6](BPh4)3, [Au18(Dppm)6Br4](BPh4)2, and [Au20(Dppm)6(CN)6] (where Dppm stands for bis(diphenylphosphino)methane), which are further confirmed by electrospray ionization mass spectrometry, thermogravimetric analysis, and X-ray photoelectron spectroscopy...
September 5, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28790819/kalopanacis-cortex-extract-capped-gold-nanoparticles-activate-nrf2-signaling-and-ameliorate-damage-in-human-neuronal-sh-sy5y-cells-exposed-to-oxygen-glucose-deprivation-and-reoxygenation
#9
Sun Young Park, Seon Yeong Chae, Jin Oh Park, Kyu Jin Lee, Geuntae Park
Recently, environment-friendly synthesis of gold nanoparticles (GNPs) has been extensively explored by biologists and chemists. However, significant research is still required to determine whether "eco-friendly" GNPs are beneficial to human health and to elucidate the molecular mechanisms of their effects on human cells. We used human neuronal SH-SY5Y cells to show that treatment with Kalopanacis Cortex extract-capped GNPs (KC-GNs), prepared via an eco-friendly, fast, one-pot synthetic route, protected neuronal cells against oxygen-glucose deprivation/reoxygenation (OGD/R)-induced damage...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28769561/nanoparticle-orientationally-displayed-antigen-epitopes-improve-neutralizing-antibody-level-in-a-model-of-porcine-circovirus-type-2
#10
Peiyang Ding, Teng Zhang, Yafei Li, Man Teng, Yaning Sun, Xiao Liu, Shujun Chai, Enmin Zhou, Qianyue Jin, Gaiping Zhang
Recent advancements in biotechnology have enabled the rapid identification and subsequent expression of pathogenic microbial major antigens that induce protective immune responses. However, subunit vaccines have not been successfully commercialized mainly due to the lack of sufficient levels of neutralizing antibodies (NAs). High levels of NA rely on the efficient recognition and cross-linking of multiple neutralizing epitopes with B-cell receptors (BCRs). Nanoparticles are able to display coupled antigenic arrays at high density and provide multiple binding molecular scenarios with BCRs...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28608526/clothing-protection-from-ultraviolet-radiation-a-new-method-for-assessment
#11
Ryan Gage, William Leung, James Stanley, Anthony Reeder, Michelle Barr, Tim Chambers, Moira Smith, Louise Signal
Clothing modifies ultraviolet radiation (UVR) exposure from the sun and has an impact on skin cancer risk and the endogenous synthesis of vitamin D. There is no standardized method available for assessing body surface area (BSA) covered by clothing, which limits generalizability between study findings. We calculated the body cover provided by 38 clothing items using diagrams of BSA, adjusting the values to account for differences in BSA by age. Diagrams displaying each clothing item were developed and incorporated into a coverage assessment procedure (CAP)...
November 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28497612/accurate-assessment-of-alpha-gal-syndrome-using-cetuximab-and-bovine-thyroglobulin-specific-ige
#12
Da Woon Sim, Jong Sun Lee, Kyung Hee Park, Kyoung Yong Jeong, Young-Min Ye, Jae-Hyun Lee, Jung-Won Park
SCOPE: IgE against galactose-α-1,3-galactose (α-Gal) causes alpha-gal syndrome. Bovine thyroglobulin (BTG) and cetuximab share this epitope. We aimed to determine the utility of specific IgE (sIgE) against cetuximab as compared to BTG for diagnosing alpha-gal syndrome. METHODS AND RESULTS: Twelve patients with alpha-gal syndrome, 11 patients with immediate beef or pork allergy, 18 asymptomatic individuals with meat sensitization, and 10 non-atopic subjects were enrolled...
May 12, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28247882/anion-templated-nanosized-silver-clusters-protected-by-mixed-thiolate-and-diphosphine
#13
Xiao-Yu Li, Zhi Wang, Hai-Feng Su, Sheng Feng, Mohamedally Kurmoo, Chen-Ho Tung, Di Sun, Lan-Sun Zheng
S(2-), MoO4(2-), and Mo6O22(8-) were successfully employed as templates in the formation of six high-symmetry polynuclear silver clusters as exemplified in the single-crystal X-ray structures of [S@Ag18((t)BuC6H4S)16(dppp)4]·DMF·5CH3CN·3CH3OH (1), [MoO4@Ag24(MeC6H4S)12(dppm)6(MoO4)4]·2BF4·C2H5NO (2), [MoO4@Ag24(MeC6H4S)12(dppm)6(MoO4)4]·2CF3SO3 (3), [MoO4@Ag24(MeC6H4S)12(dppf)6(MoO4)4]·2CF3SO3 (4), [MoO4@Ag24(MeC6H4S)12(dppb)6(MoO4)4]·2CF3SO3 (5) and [Mo6O22@Ag46((t)BuC6H4S)32(dppm)4(CH3CN)8]·6CF3SO3 (6) (dppp = 1,3-bis(diphenylphosphino)propane, dppm = bis(diphenylphosphino)methane, dppf = 1,1'-bis(diphenylphosphino)ferrocene and dppb = 1,4-bis(diphenylphosphino)butane)...
March 1, 2017: Nanoscale
https://www.readbyqxmd.com/read/28218285/super-hydrophobic-silver-doped-tio2-polycarbonate-coatings-created-on-various-material-substrates-with-visible-light-photocatalysis-for-self-cleaning-contaminant-degradation
#14
Zhengjian Li, Zongzhao Sun, Zhiqiang Duan, Rui Li, Yanli Yang, Jingyi Wang, Xiaoxia Lv, Wei Qi, Hua Wang
In the present work, a facile and efficient fabrication method has been developed for creating super-hydrophobic coatings of silver-doped TiO2@polycarbonate (TiO2 (Ag)@PC) on the substrates of different materials with photocatalytic self-cleaning performances simply by the "dipping and drying" process. The substrates were first patterned with glue and then deposited with the dopamine-capped TiO2 (Ag)@PC (DA-TiO2 (Ag)@PC) nanocomposites, followed by the further etching with dimethylbenzene. The so prepared super-hydrophobic E-DA-TiO2(Ag)@PC coatings could present the lotus leaf-like porous architectures, high adhesion stability, and especially the visible-light photocatalysis for organic contaminant degradation, thus promising the wide outdoor and indoor applications like water proofing, metal erosion protection, and surface self-cleaning...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28159283/effects-of-thinned-young-apple-polyphenols-on-the-quality-of-grass-carp-ctenopharyngodon-idellus-surimi-during-cold-storage
#15
Lijun Sun, Jiaojiao Sun, Pridhuvi Thavaraj, Xingbin Yang, Yurong Guo
The aim of this study was to investigate the effects of young apple polyphenols (YAP) on the quality of grass cap surimi (GCS) during storage at 4°C. The addition of YAP into GCS was found to be effective in delaying lipid oxidation, soluble myofibrillar protein (SMP) degradation and changes of L(∗), a(∗) and b(∗) values of GCS. Chlorogenic acid was screened to be the primary component showing preservative effects. YAP was shown to protect the functional properties of SMP during cold storage, retarding both the decrease in emulsifying activity and stability, and the increase in surface hydrophobicity of SMP...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27977128/oncolytic-adenovirus-complexes-coated-with-lipids-and-calcium-phosphate-for-cancer-gene-therapy
#16
Jianhua Chen, Pei Gao, Sujing Yuan, Rongxin Li, Aimin Ni, Liang Chu, Li Ding, Ying Sun, Xin-Yuan Liu, Yourong Duan
Oncolytic adenovirus (Onco(Ad)) is a promising therapeutic agent for treating cancer. However, the therapeutic potential of Onco(Ad) is hindered by hepatic sequestration and the host immune response in vivo. Here, we constructed a PEG/Lipids/calcium phosphate (CaP)-Onco(Ad) (PLC-Onco(Ad)) delivery system for ZD55-IL-24, an oncolytic adenovirus that carries the IL-24 gene. The negatively charged PLC-ZD55-IL-24 were disperse and resisted serum-induced aggregation. Compared to naked ZD55-IL-24, the systemic administration of PLC-ZD55-IL-24 in BALB/c mice resulted in reduced liver sequestration and systemic toxicity and evaded the innate immune response...
December 27, 2016: ACS Nano
https://www.readbyqxmd.com/read/27747330/gold-doped-silver-nanocluster-au3ag38-sch2ph-24x5-2-x-cl-or-br
#17
Zhi Wang, Ravithree Senanayake, Christine M Aikens, Wen-Miao Chen, Chen-Ho Tung, Di Sun
Here we report the single-crystal structure, experimental and theoretical characterization of a 41-metal atom Au-Ag alloy nanocluster [Au3Ag38(SCH2Ph)24X5](2-) (1, X = Cl or Br). The nanocluster 1 is co-protected by thiolate and halogen atoms and features an all-metallic face-fused biicosahedral Au2@AuAg20 rod-like kernel enwrapped by the outermost Ag18(SCH2Ph)24X3 shell. Two sites on the surface of the biicosahedral kernel are partially occupied by Au and Ag atoms. The outer Ag18(SCH2Ph)24X3 shell is composed of two Ag6S6 cycles at the two poles and one Ag6S2X3 arc at the equator with both 2- and 3-coordinated Ag atoms, which has not been observed in gold or silver nanoclusters ever before...
December 7, 2016: Nanoscale
https://www.readbyqxmd.com/read/27693841/gardenia-jasminoides-extract-capped-gold-nanoparticles-reverse-hydrogen-peroxide-induced-premature-senescence
#18
Seon Yeong Chae, Sun Young Park, Jin Oh Park, Kyu Jin Lee, Geuntae Park
This study reports a green approach for synthesis of gold nanoparticles using Gardenia jasminoides extract, and specifically, can potentially enhance anti senescence activity. Biological synthesis of gold nanoparticles is ecofriendly and effective for the development of environmentally sustainable nanoparticles compared with existing methods. Here, we developed a simple, fast, efficient, and ecofriendly approach to the synthesis of gold nanoparticles by means of a Gardenia jasminoides extract. These G. jasminoides extract-capped gold nanoparticles (GJ-GNPs) were characterized by UV-vis, high resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), and Furrier transform infrared spectroscopy (FT-IR)...
November 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/27639088/improved-noninvasive-prediction-of-liver-fibrosis-by-liver-stiffness-measurement-in-patients-with-nonalcoholic-fatty-liver-disease-accounting-for-controlled-attenuation-parameter-values
#19
COMPARATIVE STUDY
Salvatore Petta, Vincent Wai-Sun Wong, Calogero Cammà, Jean-Baptiste Hiriart, Grace Lai-Hung Wong, Fabio Marra, Julien Vergniol, Anthony Wing-Hung Chan, Vito Di Marco, Wassil Merrouche, Henry Lik-Yuen Chan, Marco Barbara, Brigitte Le-Bail, Umberto Arena, Antonio Craxì, Victor de Ledinghen
Liver stiffness measurement (LSM) frequently overestimates the severity of liver fibrosis in nonalcoholic fatty liver disease (NAFLD). Controlled attenuation parameter (CAP) is a new parameter provided by the same machine used for LSM and associated with both steatosis and body mass index, the two factors mostly affecting LSM performance in NAFLD. We aimed to determine whether prediction of liver fibrosis by LSM in NAFLD patients is affected by CAP values. Patients (n = 324) were assessed by clinical and histological (Kleiner score) features...
April 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27529508/a-single-ssdna-aptamer-binding-to-mannose-capped-lipoarabinomannan-of-bacillus-calmette-gu%C3%A3-rin-enhances-immunoprotective-effect-against-tuberculosis
#20
Xiaoming Sun, Qin Pan, Chunhui Yuan, Qilong Wang, Xiao-Lei Tang, Kan Ding, Xiang Zhou, Xiao-Lian Zhang
Because Mycobacterium bovis, termed bacillus Calmette-Guérin (BCG), the only available used tuberculosis (TB) vaccine, retains immunomodulatory properties that limit its protective immunogenicity, there are continuous efforts to identify the immunosuppression mechanism as well as new strategies for improving the immunogenicity of BCG. Here, an ssDNA aptamer "antibody" BM2 specifically bound to the mannose-capped lipoarabinomannan (ManLAM) of BCG was selected. BM2 significantly blocked ManLAM-mannose receptor (MR) binding, triggered ManLAM-CD44 signaling, and enhanced M1 macrophage and Th1 activation via cellular surface CD44 in vitro and in vivo...
September 14, 2016: Journal of the American Chemical Society
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