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https://www.readbyqxmd.com/read/28935952/application-of-bio-orthogonal-proteome-labeling-to-cell-transplantation-and-heterochronic-parabiosis
#1
Yan Liu, Michael J Conboy, Melod Mehdipour, Yutong Liu, Thanhtra P Tran, Aaron Blotnick, Prasanna Rajan, Thalie Cavalcante Santos, Irina M Conboy
Studies of heterochronic parabiosis demonstrated that with age, the composition of the circulatory milieu changes in ways that broadly inhibit tissue regenerative capacity. In addition, local tissue niches have age-specific influences on their resident stem cells. Here we use bio-orthogonal proteome labeling for detecting in vivo proteins present only in transplanted myoblasts, but not in host tissue, and proteins exclusive to one young mouse and transferred during parabiosis to its old partner. We use a transgenic mouse strain that ubiquitously expresses a modified tRNA methionine synthase, metRS, which preferentially incorporates the methionine surrogate azido-nor-leucine (ANL) into newly generated proteins...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28920841/desertibacillus-haloalkaliphilus-gen-nov-sp-nov-isolated-from-a-saline-desert
#2
Hitarth B Bhatt, M Azmatunnisa Begum, Sasikala Chintalapati, Venkata Ramana Chintalapati, Satya P Singh
Two Gram-stain-positive, rod-shaped and endospore-forming bacteria that represent a single species, designated strains KJ1-10-99T and KJ1-10-93, were isolated from a saline desert of Little Rann of Kutch, Gujarat, India. Analysis of 16S rRNA gene sequences revealed that the isolates belonged to the family Bacillaceae and were closely related to each other with 16S rRNA gene sequence similarity of 99.9 %. However, these two isolates formed a novel phylogenetic branch within this family. Both strains were aerobic, catalase and oxidase positive, and could grow optimally at 37 °C and pH 9...
September 18, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28859934/acacia-nilotica-leaf-improves-insulin-resistance-and-hyperglycemia-associated-acute-hepatic-injury-and-nephrotoxicity-by-improving-systemic-antioxidant-status-in-diabetic-mice
#3
Manas Ranjan Saha, Priyankar Dey, Indrani Sarkar, Dilip De Sarker, Biswajit Haldar, Tapas Kumar Chaudhuri, Arnab Sen
ETHNOPHARMACOLOGICAL RELEVANCE: Acacia nilotica (L.) Delile is used as a traditional anti-diabetic remedy in Bangladesh, Pakistan, Egypt, Nigeria and is mentioned in Ayurveda as well. AIM: The objective of the study was to evaluate the ethnomedicinal claim of A. nilotica leaf (ANL) extract for its efficiency in ameliorating diabetic complications. MATERIALS AND METHODS: ANL was orally administrated (50 and 200mg/kg) to alloxanized mice (blood glucose > 200mg/dL) for 20d...
August 30, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28822180/-habitat-areas-extracting-of-poria-cocos-in-anhui-based-on-3s-technologies
#4
Luo Tian, Wen-Zuo Zhou, Wan-Hua He, Dan Lun, Dong-Hong Liu
"Adversity" is one primary element that impacts the pharmacology components of authentic Chinese herbal medicine. Knowledge about "adversity" is a precondition of yield estimation, quality monitoring, location selection and the geo-herbalism protection. Used 3S(GIS, RS and GPS) technology to combine multi-source key ecological factors of "Anling", and used parasitic relationships between organisms to extracting its suitable region for the first time. Results showed that the "Anling" were mainly distributed in Dabie coteau...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28808217/electromyography-and-fos-immunostaining-study-establish-a-possible-functional-link-between-trigeminal-proprioception-and-the-oculomotor-system-in-rats
#5
Houcheng Liang, Jingdong Zhang, Pifu Luo, Hongna Zhu, Ying Qiao, Anle Su, Ting Zhang
The objective of this study was to explore whether there was a functional link between trigeminal proprioception and the oculomotor system mediated through jaw muscle afferents. Electromyography (EMG) was undertaken of the levator palpebrae (LP) and superior rectus (SR), and Fos expression was detected in the brainstem following consecutive down-stretching of the lower jaw at 2-4 Hz in rats. Retrograde tracing was undertaken of the interstitial nucleus of Cajal and Darkschewitsch nucleus (INC/DN) pre-oculomotor neurons...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28702611/atomistic-dynamics-of-sulfur-deficient-high-symmetry-grain-boundaries-in-molybdenum-disulfide
#6
Jinhua Hong, Yanlei Wang, Anle Wang, Danhui Lv, Chuanhong Jin, Zhiping Xu, Matt I J Probert, Jun Yuan, Ze Zhang
As a common type of structural defect, grain boundaries (GBs) play an important role in tailoring the physical and chemical properties of bulk crystals and their two-dimensional (2D) counterparts such as graphene and molybdenum disulfide (MoS2). In this study, we explore the atomic structures and dynamics of three kinds of high-symmetry GBs (α, β and γ) in monolayer MoS2. Atomic-resolution transmission electron microscopy (TEM) is used to characterize their formation and evolutionary dynamics, and atomistic simulation based analysis explains the size distribution of α-type GBs observed under TEM and the inter-GB interaction, revealing the stabilization mechanism of GBs by pre-existing sulfur vacancies...
July 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28613071/potent-inhibitor-of-drug-resistant-hiv-1-strains-identified-from-the-medicinal-plant-justicia-gendarussa
#7
Hong-Jie Zhang, Emily Rumschlag-Booms, Yi-Fu Guan, Dong-Ying Wang, Kang-Lun Liu, Wan-Fei Li, Van H Nguyen, Nguyen M Cuong, Djaja D Soejarto, Harry H S Fong, Lijun Rong
Justicia gendarussa, a medicinal plant collected in Vietnam, was identified as a potent anti-HIV-1 active lead from the evaluation of over 4500 plant extracts. Bioassay-guided separation of the extracts of the stems and roots of this plant led to the isolation of an anti-HIV arylnaphthalene lignan (ANL) glycoside, patentiflorin A (1). Evaluation of the compound against both the M- and T-tropic HIV-1 isolates showed it to possess a significantly higher inhibition effect than the clinically used anti-HIV drug AZT...
June 23, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28571400/design-and-calibration-of-hot-electron-spectrometer-array-for-angle-resolved-measurement
#8
Huiya Liu, Honghai An, Jie Shen, Ning Kang, Shenlei Zhou, Anle Lei, Zunqi Lin
A hot-electron spectrometer array with two-dimensional distribution has been designed with a wide-angle range and high-energy resolution to measure the spatially resolved electron spectra for high-power-laser plasma interaction experiments. It consisted of 19 identical electron spectrometers set in three directions with an interval of 10°. Each electron spectrometer was designed with a uniform magnetic field to detect electrons in the range from 20 to 500 keV. The spectrometers were calibrated using electrons from an accelerator...
May 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28559280/crystal-structure-of-the-thioesterification-conformation-of-bacillus-subtilis-o-succinylbenzoyl-coa-synthetase-reveals-a-distinct-substrate-binding-mode
#9
COMPARATIVE STUDY
Yaozong Chen, Tin Lok Li, Xingbang Lin, Xin Li, Xiang David Li, Zhihong Guo
o-Succinylbenzoyl-CoA (OSB-CoA) synthetase (MenE) is an essential enzyme in bacterial vitamin K biosynthesis and an important target in the development of new antibiotics. It is a member of the adenylating enzymes (ANL) family, which reconfigure their active site in two different active conformations, one for the adenylation half-reaction and the other for a thioesterification half-reaction, in a domain-alternation catalytic mechanism. Although several aspects of the adenylating mechanism in MenE have recently been uncovered, its thioesterification conformation remains elusive...
July 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28520214/mtorc1-inhibits-nf-%C3%AE%C2%BAb-nfatc1-signaling-and-prevents-osteoclast-precursor-differentiation-in-vitro-and-in-mice
#10
Yue Zhang, Song Xu, Kai Li, Kang Tan, Kangyan Liang, Jian Wang, Junhui Shen, Wenchong Zou, Le Hu, Daozhang Cai, Changhai Ding, Mangmang Li, Guozhi Xiao, Bin Liu, Anling Liu, Xiaochun Bai
The mechanistic target of rapamycin complex 1 (mTORC1) is a critical sensor for bone homeostasis and bone formation; however, the role of mTORC1 in osteoclast development and the underlying mechanisms have not yet been fully established. Here, we found that mTORC1 activity declined during osteoclast precursors differentiation in vitro and in vivo. We further targeted deletion of Raptor (mTORC1 key component) or Tsc1 (mTORC1 negative regulator) to constitutively inhibit or activate mTORC1 in osteoclast precursors (monocytes/macrophages), using LyzM-cre mice...
September 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28507784/geraniin-attenuates-naloxone-precipitated-morphine-withdrawal-and-morphine-induced-tolerance-in-mice
#11
Ella Anle Kasanga, Eric Boakye-Gyasi, Robert Peter Biney, James Oppong Kyekyeku, Christian Agyare, Eric Woode
BACKGROUND AND AIM: Potentially life-threatening and unpleasant side effects associated with some analgesics have fueled the drive for the search for more analgesics with better side effect profiles. Geraniin, the most dominant secondary metabolite in the aqueous extract of the aerial parts of Phyllanthus muellerianus, has been shown to possess antinociceptive properties mediated partly by opioidergic mechanisms. The purpose of this study is to determine whether geraniin exhibits tolerance and if it is able to ameliorate withdrawal signs in naloxone-precipitated morphine withdrawal...
April 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28450969/characterization-of-carboxylic-acid-reductases-as-enzymes-in-the-toolbox-for-synthetic-chemistry
#12
William Finnigan, Adam Thomas, Holly Cromar, Ben Gough, Radka Snajdrova, Joseph P Adams, Jennifer A Littlechild, Nicholas J Harmer
Carboxylic acid reductase enzymes (CARs) meet the demand in synthetic chemistry for a green and regiospecific route to aldehydes from their respective carboxylic acids. However, relatively few of these enzymes have been characterized. A sequence alignment with members of the ANL (Acyl-CoA synthetase/ NRPS adenylation domain/Luciferase) superfamily of enzymes shed light on CAR functional dynamics. Four unstudied enzymes were selected by using a phylogenetic analysis of known and hypothetical CARs, and for the first time, a thorough biochemical characterization was performed...
March 20, 2017: ChemCatChem
https://www.readbyqxmd.com/read/28450306/osteoblasts-support-megakaryopoiesis-through-production-of-interleukin-9
#13
Min Xiao, Yongkui Wang, Chen Tao, Zhenyu Wang, Jun Yang, Zhenguo Chen, Zhipeng Zou, Mangmang Li, Anling Liu, Chunhong Jia, Bin Huang, Bo Yan, Pinglin Lai, Changhai Ding, Daozhang Cai, Guozhi Xiao, Yu Jiang, Xiaochun Bai
Severe thrombocytopenia is a significant challenge in patients undergoing myelosuppressive chemotherapy for malignancies. Understanding the biology of platelet-producing megakaryocytes development in the bone marrow microenvironment may facilitate the development of novel therapies to stimulate platelet production and prevent thrombocytopenia. We report here that osteoblasts supported megakaryopoiesis by secreting interleukin-9 (IL-9), which stimulated IL-9 receptor (IL-9R)/Stat3 signaling in promoting megakaryopoiesis...
June 15, 2017: Blood
https://www.readbyqxmd.com/read/28419802/programming-post-translational-control-over-the-metabolic-labeling-of-cellular-proteins-with-a-noncanonical-amino-acid
#14
Emily E Thomas, Naresh Pandey, Sarah Knudsen, Zachary T Ball, Jonathan J Silberg
Transcriptional control can be used to program cells to label proteins with noncanonical amino acids by regulating the expression of orthogonal aminoacyl tRNA synthetases (aaRSs). However, we cannot yet program cells to control labeling in response to aaRS and ligand binding. To identify aaRSs whose activities can be regulated by interactions with ligands, we used a combinatorial approach to discover fragmented variants of Escherichia coli methionyl tRNA synthetase (MetRS) that require fusion to associating proteins for maximal activity...
May 17, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28416324/e4bp4-mediates-glucocorticoid-regulated-adipogenesis-through-cox2
#15
Yang Yang, Hongkui Wei, Tongxing Song, Anle Cai, Yuanfei Zhou, Jie Peng, Siwen Jiang, Jian Peng
Adipogenesis is mediated by glucocorticoids via transcriptional regulation of glucocorticoid receptor (GR) target genes. However, the mechanism by which GR participates in adipogenesis has hitherto been poorly characterized. In this study, E4 promoter-binding protein 4 (E4BP4) was found to have a critical role in adipogenic differentiation of preadipocytes. Gain-of-function and loss-of-function studies revealed that E4BP4 acts as a positive regulator of adipogenesis in 3T3-L1 cells. E4BP4 was markedly induced by glucocorticoid (dexamethasone) via GR and cAMP response element-binding protein (CREB) during adipogenesis...
April 14, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28402794/increased-phylogenetic-resolution-within-the-ecologically-important-rhizopogon-subgenus-amylopogon-using-10-anonymous-nuclear-loci
#16
Nicholas J Dowie, Lisa C Grubisha, Brent A Burton, Matthew R Klooster, Steven L Miller
Rhizopogon species are ecologically significant ectomycorrhizal fungi in conifer ecosystems. The importance of this system merits the development and utilization of a more robust set of molecular markers specifically designed to evaluate their evolutionary ecology. Anonymous nuclear loci (ANL) were developed for R. subgenus Amylopogon. Members of this subgenus occur throughout the United States and are exclusive fungal symbionts associated with Pterospora andromedea, a threatened mycoheterotrophic plant endemic to disjunct eastern and western regions of North America...
2017: Mycologia
https://www.readbyqxmd.com/read/28375148/low-dose-fixed-target-serial-synchrotron-crystallography
#17
Robin L Owen, Danny Axford, Darren A Sherrell, Anling Kuo, Oliver P Ernst, Eike C Schulz, R J Dwayne Miller, Henrike M Mueller-Werkmeister
The development of serial crystallography has been driven by the sample requirements imposed by X-ray free-electron lasers. Serial techniques are now being exploited at synchrotrons. Using a fixed-target approach to high-throughput serial sampling, it is demonstrated that high-quality data can be collected from myoglobin crystals, allowing room-temperature, low-dose structure determination. The combination of fixed-target arrays and a fast, accurate translation system allows high-throughput serial data collection at high hit rates and with low sample consumption...
April 1, 2017: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/28351287/neuromelioidosis-a-series-of-seven-cases-in-hainan-province-china
#18
Yuefu Zhan, Yehua Wu, Qun Li, Anle Yu
Melioidosis, which is caused by Burkholderia pseudomallei, is predominately a disease of tropical climates and is especially widespread in south-east Asia and northern Australia. Melioidosis affecting the central nervous system has a low incidence but a high mortality. We present seven cases of neuromelioidosis and analyze the disease characteristics and imaging features. Typical clinical features of this disease included high fever and headache. Five patients had an irregular fever with a temperature ≥ 39℃...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28261000/a-versatile-system-for-high-throughput-in-situ-x-ray-screening-and-data-collection-of-soluble-and-membrane-protein-crystals
#19
Jana Broecker, Viviane Klingel, Wei-Lin Ou, Aidin R Balo, David J Kissick, Craig M Ogata, Anling Kuo, Oliver P Ernst
In recent years, in situ data collection has been a major focus of progress in protein crystallography. Here, we introduce the Mylar in situ method using Mylar-based sandwich plates that are inexpensive, easy to make and handle, and show significantly less background scattering than other setups. A variety of cognate holders for patches of Mylar in situ sandwich films corresponding to one or more wells makes the method robust and versatile, allows for storage and shipping of entire wells, and enables automated crystal imaging, screening, and goniometer-based X-ray diffraction data-collection at room temperature and under cryogenic conditions for soluble and membrane-protein crystals grown in or transferred to these plates...
November 2, 2016: Crystal Growth & Design
https://www.readbyqxmd.com/read/28259411/genetic-and-functional-analysis-of-the-bovine-uterine-microbiota-part-ii-purulent-vaginal-discharge-versus-healthy-cows
#20
M L S Bicalho, S Lima, C H Higgins, V S Machado, F S Lima, R C Bicalho
The aim of this study was to characterize, using metagenomic shotgun DNA sequencing, the intrauterine microbial population and its predicted functional diversity within healthy cows and cows presenting purulent vaginal discharge (PVD). Twenty Holstein dairy cows from a single farm were enrolled in the study at 25 to 35 d postpartum. Purulent vaginal discharge was diagnosed by retrieving and scoring vaginal discharge using the Metricheck device (Simcro, Hamilton, New Zealand). Intrauterine samples for metagenomic analysis were collected by the cytobrush technique from 8 cows diagnosed with PVD and 12 healthy cows...
May 2017: Journal of Dairy Science
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