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https://www.readbyqxmd.com/read/29351317/hafts-are-novel-lncrna-transcripts-from-aflatoxin-exposure
#1
B Alex Merrick, Justin S Chang, Dhiral P Phadke, Meredith A Bostrom, Ruchir R Shah, Xinguo Wang, Oksana Gordon, Garron M Wright
The transcriptome can reveal insights into precancer biology. We recently conducted RNA-Seq analysis on liver RNA from male rats exposed to the carcinogen, aflatoxin B1 (AFB1), for 90 days prior to liver tumor onset. Among >1,000 differentially expressed transcripts, several novel, unannotated Cufflinks-assembled transcripts, or HAfTs (Hepatic Aflatoxin Transcripts) were found. We hypothesized PCR-cloning and RACE (rapid amplification of cDNA ends) could further HAfT identification. Sanger data was obtained for 6 transcripts by PCR and 16 transcripts by 5'- and 3'-RACE...
2018: PloS One
https://www.readbyqxmd.com/read/29351065/measurement-of-binding-strength-between-prey-proteins-interacting-with-toxoplasma-gondii-sag1-and-sag2-using-isothermal-titration-calorimetry-itc
#2
Meng-Yee Lai, Yee-Ling Lau
Following the outcome from a previously performed yeast two-hybrid experiment, the binding strength between T. gondii SAG1 and SAG2 and their respective prey proteins were further confirmed in this study. The sag1, sag2 and their prey genes were amplified and cloned into a pGEMT vector. To express the recombinant proteins, the fragments were then subcloned into a pRSETA vector and transformed into E. coli BL21 (DE3) cells. The recombinant proteins were expressed optimally at 37°C and 1mM of IPTG. The 6X His-tag fusion proteins were purified, dialyzed and concentrated...
March 26, 2018: Acta Parasitologica
https://www.readbyqxmd.com/read/29348721/rare-ginsenoside-ia-synthesized-from-f1-by-cloning-and-overexpression-of-the-udp-glycosyltransferase-gene-from-bacillus%C3%A2-subtilis-synthesis-characterization-and-in%C3%A2-vitro-melanogenesis%C3%A2-inhibition-activity-in-bl6b16-cells
#3
Dan-Dan Wang, Yan Jin, Chao Wang, Yeon-Ju Kim, Zuly Elizabeth Jimenez Perez, Nam In Baek, Ramya Mathiyalagan, Josua Markus, Deok-Chun Yang
Background: Ginsenoside F1 has been described to possess skin-whitening effects on humans. We aimed to synthesize a new ginsenoside derivative from F1 and investigate its cytotoxicity and melanogenesis inhibitory activity in B16BL6 cells using recombinant glycosyltransferase enzyme. Glycosylation has the advantage of synthesizing rare chemical compounds from common compounds with great ease. Methods: UDP-glycosyltransferase (BSGT1) gene from Bacillus subtilis was selected for cloning...
January 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29348555/novel-immunoinformatics-approaches-to-design-multi-epitope-subunit-vaccine-for-malaria-by-investigating-anopheles-salivary-protein
#4
Rajan Kumar Pandey, Tarun Kumar Bhatt, Vijay Kumar Prajapati
Malaria fever has been pervasive for quite a while in tropical developing regions causing high morbidity and mortality. The causal organism is a protozoan parasite of genus Plasmodium which spreads to the human host by the bite of hitherto infected female Anopheles mosquito. In the course of biting, a salivary protein of Anopheles helps in blood feeding behavior and having the ability to elicit the host immune response. This study represents a series of immunoinformatics approaches to design multi-epitope subunit vaccine using Anopheles mosquito salivary proteins...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29346724/structural-and-biophysical-characterization-of-human-extl3-domain-organisation-glycosylation-and-solution-structure
#5
Wael Awad, Sven Kjellstrom, Gabriel Svensson Birkedal, Katrin Mani, Derek Thomas Logan
Heparan sulfate proteoglycans are proteins substituted with one or more heparan sulfate (HS) polysaccharides, found in abundance at cell surfaces. HS chains influence the activity of many biologically important molecules involved in cellular communication and signaling. The exostosin (EXT) proteins are glycosyltransferases in the Golgi apparatus that assemble HS chains on HSPGs. The EXTL3 enzyme mainly works as an initiator in HS biosynthesis. In this work, human lumenal N-glycosylated EXTL3 (EXTL3ΔN) was cloned, expressed in human embryonic kidney cells and purified...
January 18, 2018: Biochemistry
https://www.readbyqxmd.com/read/29346450/cloning-and-spatiotemporal-expression-of-xenopus-laevis-apolipoprotein-ci
#6
Jyotsna Sridharan, Tomomi Haremaki, Daniel C Weinstein
Apolipoprotein CI (ApoCI) belongs to the Apolipoprotein superfamily, members of which are involved in lipid transport, uptake and homeostasis. Excessive ApoCI has been implicated in atherosclerosis and Alzheimer's disease in humans. In this study we report the isolation of Xenopus laevis apoCI and describe the expression pattern of this gene during early development, using reverse transcription polymerase chain reaction and whole mount in situ hybridization. Xenopus apoCI is enriched in the dorsal ectoderm during gastrulation, and is subsequently expressed in sensory placodes, neural tube and cranial neural crest...
2018: PloS One
https://www.readbyqxmd.com/read/29346424/higher-sequence-diversity-in-the-vaginal-tract-than-in-blood-at-early-hiv-1-infection
#7
Katja Klein, Gabrielle Nickel, Immaculate Nankya, Fred Kyeyune, Korey Demers, Emmanuel Ndashimye, Cynthia Kwok, Pai-Lien Chen, Sandra Rwambuya, Art Poon, Marshall Munjoma, Tsungai Chipato, Josaphat Byamugisha, Peter Mugyenyi, Robert A Salata, Charles S Morrison, Eric J Arts
In the majority of cases, human immunodeficiency virus type 1 (HIV-1) infection is transmitted through sexual intercourse. A single founder virus in the blood of the newly infected donor emerges from a genetic bottleneck, while in rarer instances multiple viruses are responsible for systemic infection. We sought to characterize the sequence diversity at early infection, between two distinct anatomical sites; the female reproductive tract vs. systemic compartment. We recruited 72 women from Uganda and Zimbabwe within seven months of HIV-1 infection...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29345968/mature-gastric-chief-cells-are-not-required-for-the-development-of-metaplasia
#8
Hiroto Kinoshita, Yoku Hayakawa, Zhengchuan Niu, Mitsuru Konishi, Masahiro Hata, Mayo Tsuboi, Yuki Hayata, Yohko Hikiba, Sozaburo Ihara, Hayato Nakagawa, Yoshihiro Hirata, Timothy C Wang, K Koike
During human gastric carcinogenesis, intestinal metaplasia (IM) is frequently seen in the atrophic stomach. In mice, a distinct type of metaplasia known as spasmolytic polypeptide-expressing metaplasia (SPEM) is found in several inflammatory and genetically engineered models. Given the diversity of long- and short-term models of mouse SPEM, it remains unclear whether all models have a shared or distinct molecular mechanism. The origin of SPEM in mice is currently under debate. It is postulated that stem or progenitor cells acquire genetic alterations that then supply metaplastic cell clones, while the possibility of transdifferentiation or dedifferentiation from mature gastric chief cells has also been suggested...
January 18, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29345292/preparation-and-characterization-of-the-antibody-recognizing-amacr-inside-its-catalytic-center
#9
Boris V Popov, Gleb I Sutula, Nikolay S Petrov, Ximing J Yang
Alpha-methylacyl-CoA racemase (AMACR) catalyzes the β-oxidation of fatty acids and is overexpressed in carcinomas in various organs, while its inactivation results in the inhibition of cancer growth. In the present study, we prepared and characterized 20 different mouse monoclonal antibodies against human AMACR. In the course of biopanning of a phage peptide commercial library against in-house prepared 6H9 and 2A5, and commercial 13H4 antibodies, 10 phage mimotopes recognized by each type of the antibody were selected...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29344184/therapeutic-effects-of-adenovirus-mediated-cd-and-nis-expression-combined-with-na131i-5-fc-on-human-thyroid-cancer
#10
Meng-Hui Yuan, Long-Xiao Wei, Run-Suo Zhou, Hai-Feng Xu, Jun-Yan Wang, Qian-Rong Bai
Thyroid cancer is the most common type of malignant endocrine tumor diagnosed. Previous studies have indicated that gene therapy is the most promising and effective therapeutic method for thyroid cancer. Therefore, in the present study, Na131I/5-fluorocytosine (5-FC) treatment was combined with cytosine deaminase (CD, encoded by the CDA gene) and sodium iodide symporter (NIS, encoded by the SLC5A5 gene) to act together as a therapeutic tool for thyroid cancer. The present study explored the combined cytotoxic effects of adenovirus-mediated CD and NIS under the control of the progression elevated gene-3 (PEG-3) promoter (Ad-PEG-3-CD-NIS) with Na131I/5-FC against the human thyroid cancer TT cell line in vitro...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344158/construction-of-the-pot1-promoter-report-gene-vector-and-the-effect-and-underlying-mechanism-of-the-pot1-promoter-in-regulating-telomerase-and-telomere-length
#11
Liang Zeng, Yue-Li Wang, Fa Wang, Shi-Quan Cui, Liang Hu, Di-Nan Huang, Gan Hou
By using human genomic DNA as a template to clone protection of telomere 1 (POT1) promoter gene segments and construct the POT1 promoter luciferase report gene vector (pGL3-Control-POT1-promoter), the association between POT1, and the regulation of telomerase and telomere length was investigated. In the present study, two recombinant luciferase report gene vectors were constructed, which included different regions of the POT1 promoter. The plasmids were transformed into DH5α and the positive clones were obtained...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343791/single-plasmid-systems-for-inducible-dual-protein-expression-and-for-crispr-cas9-crispri-gene-regulation-in-lactic-acid-bacterium-lactococcus-lactis
#12
Aleš Berlec, Katja Škrlec, Janja Kocjan, Maria Olenic, Borut Štrukelj
Lactococcus lactis is a food-grade lactic acid bacterium that is used in the dairy industry as a cell factory and as a host for recombinant protein expression. The nisin-controlled inducible expression (NICE) system is frequently applied in L. lactis; however new tools for its genetic modification are highly desirable. In this work NICE was adapted for dual protein expression. Plasmid pNZDual, that contains two nisin promoters and multiple cloning sites (MCSs), and pNZPolycist, that contains a single nisin promoter and two MCSs separated by the ribosome binding site, were constructed...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343702/analysis-of-mitochondrial-function-in-human-induced-pluripotent-stem-cells-from-patients-with-mitochondrial-diabetes-due-to-the-a3243g-mutation
#13
Masaki Matsubara, Hajime Kanda, Hiromi Imamura, Mayumi Inoue, Michio Noguchi, Kiminori Hosoda, Akira Kakizuka, Kazuwa Nakao
We previously established human induced pluripotent stem (iPS) cells in two diabetic patients from different families with the mitochondrial A3243G mutation and isolated isogenic iPS cell clones with either undetectable or high levels of the mutation in both patients. In the present study, we analyzed the mitochondrial functions of two mutation-undetectable and two mutation-high clones in each patient through four methods to assess complex I activity, mitochondrial membrane potential, mitochondrial respiration, and mitochondrial ATP production...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343653/establishment-of-a-screening-system-to-identify-novel-gata-2-transcriptional-regulators
#14
Keiichi Ohashi, Tohru Fujiwara, Koichi Onodera, Yo Saito, Satoshi Ichikawa, Masahiro Kobayashi, Yoko Okitsu, Noriko Fukuhara, Yasushi Onishi, Hideo Harigae
Hematopoietic stem cells can self-renew and differentiate into all blood cell types. The transcription factor GATA-2 is expressed in hematopoietic stem and progenitor cells and is essential for cell proliferation and differentiation. Heterozygous germline GATA2 mutations induce GATA-2 deficiency syndrome, characterized by monocytopenia, a predisposition to myelodysplasia and acute myeloid leukemia, and a profoundly reduced dendritic cell (DC) population, which is associated with increased susceptibility to viral infections...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29343644/identification-of-genes-required-for-mycobacterium-abscessus-growth-in-vivo-with-a-prominent-role-of-the-esx-4-locus
#15
Laura Laencina, Violaine Dubois, Vincent Le Moigne, Albertus Viljoen, Laleh Majlessi, Justin Pritchard, Audrey Bernut, Laura Piel, Anne-Laure Roux, Jean-Louis Gaillard, Bérengère Lombard, Damarys Loew, Eric J Rubin, Roland Brosch, Laurent Kremer, Jean-Louis Herrmann, Fabienne Girard-Misguich
Mycobacterium abscessus, a rapidly growing mycobacterium (RGM) and an opportunistic human pathogen, is responsible for a wide spectrum of clinical manifestations ranging from pulmonary to skin and soft tissue infections. This intracellular organism can resist the bactericidal defense mechanisms of amoebae and macrophages, an ability that has not been observed in other RGM. M. abscessus can up-regulate several virulence factors during transient infection of amoebae, thereby becoming more virulent in subsequent respiratory infections in mice...
January 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29343200/immunohistochemical-expression-of-cd31-pecam-1-in-nonendothelial-tumors-of-dogs
#16
José A Ramos-Vara, Margaret A Miller, Dee M Dusold
CD31 immunoreactivity has been reported in human nonendothelial tumors of both epithelial and mesenchymal origin. This study examined CD31 immunoreactivity of 347 formalin-fixed, paraffin-embedded normal, nonneoplastic, and neoplastic canine tissues. CD31 expression was considered positive if at least 10% of the cell population had membranous reactivity. Labeling with the CD31 antibody (clone JC/70A) was observed in 16 samples of normal organs (liver, kidney, lymph node), 6 of 6 specimens of hepatic nodular hyperplasia, 3 of 3 hepatic regenerative nodules, 1 of 4 anal sac carcinomas, 6 of 6 hemangiosarcomas, 18 of 20 hepatocellular carcinomas, 1 of 6 mammary carcinomas, 3 of 5 plasmacytomas, 18 of 53 renal cell carcinomas, and 1 of 5 cutaneous histiocytomas...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29342954/a-built-in-cpg-adjuvant-in-rsv-f-protein-dna-vaccine-drives-a-th1-polarized-and-enhanced-protective-immune-response
#17
Yao Ma, Yue-Ying Jiao, Yun-Zhou Yu, Nan Jiang, Ying Hua, Xiu-Juan Zhang, Yuan-Hui Fu, Xiang-Lei Peng, Yan-Peng Zheng, Larry J Anderson, Jin-Sheng He
Human respiratory syncytial virus (RSV) is the most significant cause of acute lower respiratory infection in children. However, there is no licensed vaccine available. Here, we investigated the effect of five or 20 copies of C-Class of CpG ODN (CpG-C) motif incorporated into a plasmid DNA vaccine encoding RSV fusion (F) glycoprotein on the vaccine-induced immune response. The addition of CpG-C motif enhanced serum binding and virus-neutralizing antibody responses in BALB/c mice immunized with the DNA vaccines...
January 15, 2018: Viruses
https://www.readbyqxmd.com/read/29342444/scarlet-fever-epidemic-in-china-caused-by-streptococcus-pyogenes-serotype-m12-epidemiologic-and-molecular-analysis
#18
Yuanhai You, Mark R Davies, Melinda Protani, Liam McIntyre, Mark J Walker, Jianzhong Zhang
From 2011, Hong Kong and mainland China have witnessed a sharp increase in reported cases, with subsequent reports of epidemic scarlet fever in North Asia and the United Kingdom. Here we examine epidemiological data and investigate the genomic context of the predominantly serotype M12 Streptococcus pyogenes scarlet fever isolates from mainland China. Incident case data was obtained from the Chinese Nationwide Notifiable Infectious Diseases Reporting Information System. The relative risk of scarlet fever in recent outbreak years 2011-2016 was calculated using the median age-standardised incidence rate, compared to years 2003-2010 prior this outbreak...
January 11, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29341479/nuclear-division-cycle-80-promotes-malignant-progression-and-predicts-clinical-outcome-in-colorectal-cancer
#19
Xuebing Yan, Linsheng Huang, Liguo Liu, Huanlong Qin, Zhenshun Song
Colorectal cancer (CRC) is a common human malignancy worldwide and increasing studies have attributed its malignant progression to abnormal molecular changes in cancer cells. Nuclear division cycle 80 (NDC80) is a newly discovered oncoprotein that regulates cell proliferation and cycle in numerous malignancies. However, its clinical significance and biological role in CRC remain unclear. Therefore, in this study, we firstly analyze its expression in a retrospective cohort enrolling 224 CRC patients and find its overexpression is significantly correlated with advanced tumor stage and poor prognosis in CRC patients...
January 17, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29339073/the-human-gcom1-complex-gene-interacts-with-the-nmda-receptor-and-internexin-alpha
#20
Raymond S Roginski, Chi W Lau, Phillip P Santoiemma, Sara J Weaver, Peicheng Du, Patricia Soteropoulos, Jay Yang
The known functions of the human GCOM1 complex hub gene include transcription elongation and the intercalated disk of cardiac myocytes. However, in all likelihood, the gene's most interesting, and thus far least understood, roles will be found in the central nervous system. To investigate the functions of the GCOM1 gene in the CNS, we have cloned human and rat brain cDNAs encoding novel, 105 kDa GCOM1 combined (Gcom) proteins, designated Gcom15, and identified a new group of GCOM1 interacting genes, termed Gints, from yeast two-hybrid (Y2H) screens...
January 12, 2018: Gene
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