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https://www.readbyqxmd.com/read/28109156/-cloning-and-sequence-analysis-of-variable-region-genes-of-mouse-anti-human-s100a9-monoclonal-antibody
#1
Min Yan, Danyang Mi, Xiangdong Sun, Zhenqiang Zhang, Huahui Zeng, Wendi Liu
Objective To clone and analyze variable region gene sequences of mouse monoclonal antibody against human S100A9 (anti-human S100A9 mAb). Methods Total RNA was extracted from the hybridoma cell line (IID4B10) secreting mouse anti-human S100A9 mAb. Furthermore, the heavy chain variable region (VH) and light chain variable region (VL) genes were amplified using reverse transcription-polymerase chain reaction (RT-PCR). After the cloning and sequencing of the VH and VL genes, the sequence analyses were performed by BLAST program...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109076/microrna-409-3p-represses-glioma-cell-invasion-and-proliferation-by-targeting-high-mobility-group-nucleosome-binding-domain-5
#2
Yidong Cao, Liang Zhang, Minghao Wei, Xue Jiang, Dong Jia
Emerging evidence has suggested that aberrantly expressed microRNAs (miRNAs) are associated with glioma development andprogression. The aberrant expression of miR-409-3p has been reported in several human cancers. However, little is known about the function of miR-409-3p in gliomas. The aim of this study was to investigate the specific role and molecular mechanism of miR-409-3p in gliomas. In the present study, we found that miR-409-3p was downregulated in glioma tissue and cell lines. Overexpression of miR-409-3p inhibited glioma cell invasion and proliferation, whereas suppression of miR-409-3p promoted glioma cell invasion and proliferation...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28109061/urocortin-suppresses-endometrial-cancer-cell-migration-via-crfr2-and-its-system-components-are-differentially-modulated-by-estrogen
#3
Gemma L Owens, Kevin M Lawrence, Tom R Jackson, Emma J Crosbie, Berna S Sayan, Henry C Kitchener, Paul A Townsend
Urocortin (UCN1) peptide shares structural and functional homology with corticotropin-releasing factor (CRF). UCN1 is significantly reduced in endometrial adenocarcinoma compared to healthy controls. However, there are no data which evaluate the effects of UCN1 in the endometrium, or how it is modulated. We used proliferation and transwell assays to determine the effect of UCN1 on the proliferation and migration of Ishikawa and HEC1A cells. We also determined the expression levels of UCN1 and its receptors produced by estrogen receptor agonists, and the effect of UCN1 on estrogen receptor expression, using quantitative polymerase chain reaction...
January 21, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28108804/antigenic-and-genotypic-characterization-of-rabies-virus-isolated-from-bats-mammalia-chiroptera-from-municipalities-in-s%C3%A3-o-paulo-state-southeastern-brazil
#4
Benedito Donizete Menozzi, Rafael de Novaes Oliveira, Laís Moraes Paiz, Virgínia Bodelão Richini-Pereira, Helio Langoni
Bats have aroused growing attention in the public health sphere because they are considered the main reservoir of rabies virus (RABV) in the Americas, in places where canine rabies is under control. Antigenic and genetic studies of RABV isolates have been used to describe the epidemiological profile of rabies and to identify possible hosts/reservoirs for different epidemiological cycles. This study describes the antigenic and genotypic characterization of 19 RABV isolates from central nervous system samples of non-hematophagous bats (Mammalia: Chiroptera)...
January 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28108803/the-genome-sequence-of-a-novel-rna-virus-in-adelphocoris-suturalis
#5
Xinlian Li, Pengjun Xu, Xianming Yang, He Yuan, Lizhen Chen, Yanhui Lu
The complete genome of a novel virus found in Adelphocoris suturalis was determined by RNA-seq and named Adelphocoris suturalis-associated virus 1 (ASV1). ASV1 has a single-stranded RNA genome of 10,845 nucleotides in length and contains five putative open reading frames (ORFs). ORF1 encodes a polypeptide of 2592 amino acids (aa) and contains four conserved domains: a viral RNA methyltransferase domain, an FtsJ-like methyltransferase domain, a viral RNA helicase domain and an RNA-dependent RNA polymerase domain...
January 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28108736/long-non-coding-rnas-a-rising-biotarget-in-colorectal-cancer
#6
Jian Luo, Jian Qu, Dong-Kai Wu, Zhi-Li Lu, Yue-Sheng Sun, Qiang Qu
Colorectal cancer (CRC) is a common gastrointestinal cancer, with a high incidence and high mortality. Long non-coding RNAs (lncRNAs) are involved in the development, invasion and metastasis, early diagnosis, prognosis, the chemoresistance and radioresistance of CRC through interference with mRNA activity, directly combining with proteins to regulate their activity or alter their localization, influencing downstream gene expression by inhibiting RNA polymerase and regulating gene expression as competing endogenous RNAs...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28108662/coordination-between-the-polymerase-and-rnase-h-activity-of-hiv-1-reverse-transcriptase
#7
Małgorzata Figiel, Miroslav Krepl, Jarosław Poznański, Agnieszka Gołąb, Jiří Šponer, Marcin Nowotny
Replication of human immunodeficiency virus 1 (HIV-1) involves conversion of its single-stranded RNA genome to double-stranded DNA, which is integrated into the genome of the host. This conversion is catalyzed by reverse transcriptase (RT), which possesses DNA polymerase and RNase H domains. The available crystal structures suggest that at any given time the RNA/DNA substrate interacts with only one active site of the two domains of HIV-1 RT. Unknown is whether a simultaneous interaction of the substrate with polymerase and RNase H active sites is possible...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28108661/a-structure-function-analysis-of-the-yeast-elg1-protein-reveals-the-importance-of-pcna-unloading-in-genome-stability-maintenance
#8
Keren Shemesh, Marek Sebesta, Martin Pacesa, Soumitra Sau, Alex Bronstein, Oren Parnas, Batia Liefshitz, Česlovas Venclovas, Lumir Krejci, Martin Kupiec
The sliding clamp, PCNA, plays a central role in DNA replication and repair. In the moving replication fork, PCNA is present at the leading strand and at each of the Okazaki fragments that are formed on the lagging strand. PCNA enhances the processivity of the replicative polymerases and provides a landing platform for other proteins and enzymes. The loading of the clamp onto DNA is performed by the Replication Factor C (RFC) complex, whereas its unloading can be carried out by an RFC-like complex containing Elg1...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28108654/revealing-the-role-of-the-product-metal-in-dna-polymerase-%C3%AE-catalysis
#9
Lalith Perera, Bret D Freudenthal, William A Beard, Lee G Pedersen, Samuel H Wilson
DNA polymerases catalyze a metal-dependent nucleotidyl transferase reaction during extension of a DNA strand using the complementary strand as a template. The reaction has long been considered to require two magnesium ions. Recently, a third active site magnesium ion was identified in some DNA polymerase product crystallographic structures, but its role is not known. Using quantum mechanical/ molecular mechanical calculations of polymerase β, we find that a third magnesium ion positioned near the newly identified product metal site does not alter the activation barrier for the chemical reaction indicating that it does not have a role in the forward reaction...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28108511/biomarker-based-pet-imaging-of-diffuse-intrinsic-pontine-glioma-in-mouse-models
#10
Susanne Kossatz, Brandon Carney, Melanie E Schweitzer, Giuseppe Carlucci, Vesselin Miloushev, Uday B Maachani, Prajwal Rajappa, Kayvan Keshari, David J Pisapia, Wolfgang A Weber, Mark M Souweidane, Thomas Reiner
Diffuse intrinsic pontine glioma (DIPG) is a childhood brainstem tumor with a universally poor prognosis. Here, we characterize on a positron emission tomography (PET) probe for imaging DIPG in vivo. In human histological tissues, the probes target, poly(ADP)ribose polymerase 1 (PARP1), was highly expressed in DIPG compared to normal brain. PET imaging allowed for the sensitive detection of DIPG in a genetically engineered mouse model (GEMM), and probe uptake correlated to histologically determined tumor infiltration...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108474/the-human-initiator-is-a-distinct-and-abundant-element-that-is-precisely-positioned-in-focused-core-promoters
#11
Long Vo Ngoc, California Jack Cassidy, Cassidy Yunjing Huang, Sascha H C Duttke, James T Kadonaga
DNA sequence signals in the core promoter, such as the initiator (Inr), direct transcription initiation by RNA polymerase II. Here we show that the human Inr has the consensus of BBCA+1BW at focused promoters in which transcription initiates at a single site or a narrow cluster of sites. The analysis of 7678 focused transcription start sites revealed 40% with a perfect match to the Inr and 16% with a single mismatch outside of the CA+1 core. TATA-like sequences are underrepresented in Inr promoters. This consensus is a key component of the DNA sequence rules that specify transcription initiation in humans...
January 20, 2017: Genes & Development
https://www.readbyqxmd.com/read/28108366/functional-analysis-of-a-tyrosinase-gene-involved-in-early-larval-shell-biogenesis-in-crassostrea-angulata-and-its-response-to-ocean-acidification
#12
Bingye Yang, Fei Pu, Lingling Li, Weiwei You, Caihuan Ke, Danqing Feng
The formation of the primary shell is a vital process in marine bivalves. Ocean acidification largely influences shell formation. It has been reported that enzymes involved in phenol oxidation, such as tyrosinase and phenoloxidases, participate in the formation of the periostracum. In the present study, we cloned a tyrosinase gene from Crassostrea angulata named Ca-tyrA1, and its potential function in early larval shell biogenesis was investigated. The Ca-tyrA1 gene has a full-length cDNA of 2430bp in size, with an open reading frame of 1896bp in size, which encodes a 631-amino acid protein that includes a 24-amino acid putative signal peptide...
January 17, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28108289/negative-feedback-regulation-between-microrna-let-7g-and-lox-1-mediated-hypoxia-induced-pasmcs-proliferation
#13
Wei-Fang Zhang, Tian-Tian Zhu, You-Wen Xiong, Ai-Zhen Xiong, Xiao-Yue Ge, Chang-Ping Hu, Zheng Zhang
BACKGROUND: Pulmonary hypertension (PH) is a proliferative disorder associated with enhanced proliferation and suppressed apoptosis of pulmonary artery smooth muscle cells (PASMCs). Our lately study demonstrated that let-7g inhibited hypoxia-induced proliferation of PASMCs via repressed c-myc-Bmi-1-p16 signaling pathway. However, the upstream of let-7g has not yet been fully defined. Previous studies have shown that LOX-1, a target of let-7g, could also regulate the expression of let-7g in human aortic endothelial cells...
January 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28108275/benzofuran-2-acetic-ester-derivatives-induce-apoptosis-in-breast-cancer-cells-by-upregulating-p21-cip-waf1-gene-expression-in-p53-independent-manner
#14
Cinzia Giordano, Daniela Rovito, Ines Barone, Raffaella Mancuso, Daniela Bonofiglio, Francesca Giordano, Stefania Catalano, Bartolo Gabriele, Sebastiano Andò
Breast cancer is the most common malignancy and the leading cause of cancer-related death in women worldwide. High toxicity of used chemotherapeutics and resistance of cancer cells to treatments are a driving force for searching the new drug candidates for breast cancer therapy. In this study, we tested the antiproliferative effects of a series of benzofuran-2-acetic methyl ester derivatives, synthesized by a palladium-catalyzed carbonylative heterocyclization approach, on breast cancer cells. We observed that benzofuran compounds bearing a phenyl or tert-butyl substituent α to the methoxycarbonyl group significantly inhibited anchorage-dependent and -independent cell growth, and induced G0/G1 cell cycle arrest in human estrogen receptor alpha positive (MCF-7 and T47D) and in triple negative MDA-MB-231 breast cancer cells, without affecting growth of MCF-10A normal breast epithelial cells...
January 15, 2017: DNA Repair
https://www.readbyqxmd.com/read/28108258/downregulation-of-iduna-is-associated-with-aif-nuclear-translocation-in-neonatal-brain-after-hypoxia-ischemia
#15
Xiaoxia Jianhua Yang Cheng, Yubo Juan Gao Ding, Xinli Ni
In adult stroke models, the neuroprotective protein, Iduna, inhibits poly (ADP-ribose) polymerase-1 (PARP-1)-dependent cell death by decreasing apoptosis-inducing factor (AIF) nuclear translocation. Because the PARP1-dependent pathway and Iduna, which promotes AIF degradation, contribute to hypoxic-ischemic (HI) brain damage in the immature brain, we examined the relationship between Iduna expression and AIF nuclear translocation in the cerebral cortex of postnatal day 7 rats after HI. Ninety rats were divided into three groups: sham, 1-h hypoxia and 2-h hypoxia...
January 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28108161/behavioral-response-and-gene-expression-changes-in-fipronil-administered-male-japanese-quail-coturnix-japonica
#16
Samah R Khalil, Ashraf Awad, Hesham H Mohammed
Fipronil is an important member of the phenylpyrazole group of insecticides and is widely used for various crops and vegetables to control insects, thereby exposing birds, animals, and humans to fipronil. Currently, there is limited information on the effects of fipronil exposure in Japanese quail. Therefore, our aim was to assess the reproductive toxicological effects of fipronil in the Japanese quail in a 15-day gavage study and then its recovery over a period of 60 days. Fipronil-administration led to significant losses in both feed intake and body weight...
January 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28108140/steroid-treatment-in-ocular-tuberculosis-a-double-edged-sword
#17
S Souissi, T David, L Beral
INTRODUCTION: We report the case of a Caribbean patient with an atypical presentation of bilateral tuberculous chorioretinopathy. PATIENT AND METHODS: A 57-year-old woman, with hypertension and non-insulin dependent diabetes, was referred to our center for a sudden loss of vision in the right eye to hand motions. Ophthalmic examination revealed only right papilledema. Brain magnetic resonance imaging was normal. Laboratory examination revealed no signs of inflammation...
January 17, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28107985/enhanced-sensitivity-for-detection-of-plasmodium-falciparum-gametocytes-by-magnetic-nanoparticles-combined-with-enzyme-substrate-system
#18
Tienrat Tangchaikeeree, Piamsiri Sawaisorn, Sangdao Somsri, Duangporn Polpanich, Chaturong Putaporntip, Pramuan Tangboriboonrat, Rachanee Udomsangpetch, Kulachart Jangpatarapongsa
The highly sensitive and specific detection of Pfg377 gene of Plasmodium falciparum gametocyte using Magnetic Nanoparticles PCR Enzyme-Linked Gene Assay (MELGA) was successfully developed. The MELGA included amplification of the Pfg377 gene by polymerase chain reaction (PCR) using magnetic nanoparticles (MNPs)-conjugated forward primer and biotinylated reverse primer, followed by post-analytical process using horseradish peroxidase (HRP)-conjugated streptavidin (SA). The complexes of MELGA product were incubated with the peroxidase substrate and hydrogen peroxide to produce the signal for colorimetric measurement...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107834/a-label-free-colorimetric-isothermal-cascade-amplification-for-the-detection-of-disease-related-nucleic-acids-based-on-double-hairpin-molecular-beacon
#19
Dong Wu, Huo Xu, Haimei Shi, Weihong Li, Mengze Sun, Zai-Sheng Wu
K-Ras mutations at codon 12 play an important role in an early step of carcinogenesis. Here, a label-free colorimetric isothermal cascade amplification for ultrasensitive and specific detection of K-Ras point mutation is developed based on a double-hairpin molecular beacon (DHMB). The biosensor consists of DHMB probe and a primer-incorporated polymerization template (PPT) designed partly complementary to DHMB. In the presence of polymerase, target DNA is designed to trigger strand displacement amplification (SDA) via promote the hybridization of PPT with DHMB and subsequently initiates cascade amplification process with the help of the nicking endonuclease...
March 8, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28107805/effectiveness-of-an-sms-based-maternal-mhealth-intervention-to-improve-clinical-outcomes-of-hiv-positive-pregnant-women
#20
Jesse Coleman, Kate C Bohlin, Anna Thorson, Vivian Black, Patricia Mechael, Josie Mangxaba, Jaran Eriksen
We conducted a retrospective study to investigate the effectiveness of an mHealth messaging intervention aiming to improve maternal health and HIV outcomes. Maternal health SMSs were sent to 235 HIV-infected pregnant women twice per week in pregnancy and continued until the infant's first birthday. The messages were timed to the stage of the pregnancy/infant age and covered maternal health and HIV-support information. Outcomes, measured as antenatal care (ANC) visits, birth outcomes and infant HIV testing, were compared to a control group of 586 HIV-infected pregnant women who received no SMS intervention...
January 20, 2017: AIDS Care
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