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https://www.readbyqxmd.com/read/28340487/microrna-4739-regulates-osteogenic-and-adipocytic-differentiation-of-immortalized-human-bone-marrow-stromal-cells-via-targeting-lrp3
#1
Mona Elsafadi, Muthurangan Manikandan, Nehad M Alajez, Rimi Hamam, Raed Abu Dawud, Abdullah Aldahmash, Zafar Iqbal, Musaad Alfayez, Moustapha Kassem, Amer Mahmood
Understanding the regulatory networks underlying lineage differentiation and fate determination of human bone marrow stromal cells (hBMSC) is a prerequisite for their therapeutic use. The goal of the current study was to unravel the novel role of the low-density lipoprotein receptor-related protein 3 (LRP3) in regulating the osteogenic and adipogenic differentiation of immortalized hBMSCs. Gene expression profiling revealed significantly higher LRP3 levels in the highly osteogenic hBMSC clone imCL1 than in the less osteogenic clone imCL2, as well as a significant upregulation of LRP3 during the osteogenic induction of the imCL1 clone...
March 8, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28340435/optimization-of-hydrogen-dispersion-in-thermophilic-up-flow-reactors-for-ex-situ-biogas-upgrading
#2
Ilaria Bassani, Panagiotis G Kougias, Laura Treu, Hugo Porté, Stefano Campanaro, Irini Angelidaki
This study evaluates the efficiency of four novel up-flow reactors for ex situ biogas upgrading converting externally provided CO2 and H2 to CH4, via hydrogenotrophic methanogenesis. The gases were injected through stainless steel diffusers combined with alumina ceramic sponge or through alumina ceramic membranes. Pore size, input gas loading and gas recirculation flow rate were modulated to optimize gas-liquid mass transfer, and thus methanation efficiency. Results showed that larger pore size diffusion devices achieved the best kinetics and output-gas quality converting all the injected H2 and CO2, up to 3...
March 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28340271/snp-detection-using-rna-sequences-of-candidate-genes-associated-with-puberty-in-cattle
#3
M M Dias, A Cánovas, C Mantilla-Rojas, D G Riley, P Luna-Nevarez, S J Coleman, S E Speidel, R M Enns, A Islas-Trejo, J F Medrano, S S Moore, M R S Fortes, L T Nguyen, B Venus, I S D P Diaz, F R P Souza, L F S Fonseca, F Baldi, L G Albuquerque, M G Thomas, H N Oliveira
Fertility traits, such as heifer pregnancy, are economically important in cattle production systems, and are therefore, used in genetic selection programs. The aim of this study was to identify single nucleotide polymorphisms (SNPs) using RNA-sequencing (RNA-Seq) data from ovary, uterus, endometrium, pituitary gland, hypothalamus, liver, longissimus dorsi muscle, and adipose tissue in 62 candidate genes associated with heifer puberty in cattle. RNA-Seq reads were assembled to the bovine reference genome (UMD 3...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28340173/f-box-protein-fbx92-affects-leaf-size-in-arabidopsis-thaliana
#4
Joke Baute, Stefanie Polyn, Jolien De Block, Jonas Blomme, Mieke Van Lijsebettens, Dirk Inzé
F-box proteins are part of one of the largest families of regulatory proteins that play important roles in protein degradation. In plants, F-box proteins are functionally very diverse, and only a small subset has been characterized in detail. Here, we identified a novel F-box protein FBX92 as a repressor of leaf growth in Arabidopsis. Overexpression of AtFBX92 resulted in plants with smaller leaves than wild type, whereas plants with reduced levels of AtFBX92 showed in contrast increased leaf growth by stimulating cell proliferation...
March 14, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28339984/the-link-between-phenotype-and-fatty-acid-metabolism-in-advanced-chronic-kidney-disease
#5
Dan-Qian Chen, Hua Chen, Lin Chen, Nosratola D Vaziri, Ming Wang, Xiang-Ri Li, Ying-Yong Zhao
Background.: The kidney plays a central role in elimination of metabolic waste products and regulation of low-molecular weight metabolites via glomerular filtration, tubular secretion and reabsorption. Disruption of these processes results in profound changes in the biochemical milieu of the body fluids, which contribute to complications of chronic kidney disease (CKD) by inducing cytotoxicity and inflammation. Insight into the changes of the composition of metabolites and dysregulation of target genes and proteins enhances the understanding of the pathophysiology of CKD and its complications, and the development of novel therapeutic strategies...
March 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339850/allelic-variation-in-tlr4-is-linked-to-resistance-to-salmonella-enteritidis-infection-in-chickens
#6
Peng Li, Huihua Wang, Xingwang Zhao, Zhongyong Gou, Ranran Liu, Yongmei Song, Qinghe Li, Maiqing Zheng, Huanxian Cui, Nadia Everaert, Guiping Zhao, Jie Wen
Salmonella Enteritidis (SE) is a foodborne pathogen that negatively affects both animal and human health. Polymorphisms of the TLR4 gene may affect recognition by Toll-like receptor 4 (TLR4) of bacterial lipopolysaccharide (LPS), leading to differences in host resistance to pathogenic infections. The present study has investigated polymorphic loci of chicken TLR4 (ChTLR4) in ten chicken breeds, electrostatic potentials of mutant structures of TLR4, and a linkage analysis between allelic variation and survival ratio to infection with SE in specific-pathogen-free (SPF) White Leghorns...
March 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339768/the-transcription-factor-olig2-is-important-for-the-biology-of-diffuse-intrinsic-pontine-gliomas
#7
Jane L Anderson, Ranjithmenon Muraleedharan, Nicole Oatman, Amanda Klotter, Satarupa Sengupta, Ronald R Waclaw, Jianqiang Wu, Rachid Drissi, Lili Miles, Eric H Raabe, Matthew L Weirauch, Maryam Fouladi, Lionel M Chow, Lindsey Hoffman, Mariko DeWire, Biplab Dasgupta
Background.: Diffuse intrinsic pontine glioma (DIPG) is a high-grade brainstem glioma of children with dismal prognosis. There is no single unifying model about the cell of origin of DIPGs. Proliferating cells in the developing human and mouse pons, the site of DIPGs, express neural stem/progenitor cell (NPC) markers, including Sox2, nestin, vimentin, Olig2, and glial fibrillary acidic protein, in an overlapping and non-overlapping manner, suggesting progenitor cell heterogeneity in the pons...
February 23, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28339748/genotype-based-gene-signature-of-glioma-risk
#8
Yen-Tsung Huang, Yi Zhang, Zhijin Wu, Dominique S Michaud
Background.: Glioma accounts for 80% of malignant brain tumors, but its etiologic determinants remain elusive. Despite genetic susceptibility loci identified by genome-wide association study (GWAS), the agnostic approach leaves open the possibility that other susceptibility genes remain to be discovered. Here we conduct a gene-centric integrative GWAS (iGWAS) of glioma risk that combines transcriptomics and genetics. Methods.: We synthesized a brain transcriptomics dataset (n = 354), a GWAS dataset (n = 4203), and an advanced glioma tumor transcriptomic dataset (n = 483) to conduct an iGWAS...
February 22, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28339719/the-pepper-wpp-domain-protein-cawdp1-acts-as-a-novel-negative-regulator-of-drought-stress-via-aba-signaling
#9
Chanmi Park, Chae Woo Lim, Woonhee Baek, Jung-Hyun Kim, Sohee Lim, Sang Hyon Kim, Kyung-Nam Kim, Sung Chul Lee
Plants are constantly challenged by various environmental stresses, including high salinity and drought, and they have evolved defense mechanisms to counteract the deleterious effects of these stresses. The plant hormone abscisic acid (ABA) regulates plant growth and developmental processes and mediates abiotic stress responses. Here, we report the identification and characterization of a novel CaWDP1 (Capsicum annuumWPP Domain Protein 1) protein. The expression of CaWDP1 in pepper leaves was induced by ABA, drought, and NaCl treatments, suggesting its role in the abiotic stress response...
February 22, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28339678/ddx4-egfp-transgenic-rat-model-for-the-study-of-germline-development-and-spermatogenesis%C3%A2
#10
Kathrin Gassei, Yi Sheng, Adetunji Fayomi, Payal Mital, Meena Sukhwani, Chih-Cheng Lin, Karen A Peters, Andrew Althouse, Hanna Valli, Kyle E Orwig
Spermatogonial stem cells (SSC) are essential for spermatogenesis and male fertility. In addition, these adult tissue stem cells can be used as vehicles for germline modification in animal models and may have application for treating male infertility. To facilitate the investigation of SSCs and germ lineage development in rats, we generated a DEAD-box helicase 4 (DDX4) (VASA) promoter-enhanced green fluorescent protein (EGFP) reporter transgenic rat. Quantitative real-time polymerase chain reaction and immunofluorescence confirmed that EGFP was expressed in the germ cells of the ovaries and testes and was absent in somatic cells and tissues...
February 20, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339648/three-dimensional-testicular-organoid-a-novel-tool-for-the-study-of-human-spermatogenesis-and-gonadotoxicity-in-vitro%C3%A2
#11
Samuel S Pendergraft, Hooman Sadri-Ardekani, Anthony Atala, Colin E Bishop
Existing methods for evaluating the potential gonadotoxicity of environmental agents and pharmaceutical compounds rely heavily on animal studies. The current gold standard in vivo functional assays in animals are limited in their human predictive capacity. In addition, existing human two-dimensional in vitro models of testicular toxicity do not accurately reflect the in vivo situation. A more reliable testicular in vitro model system is needed to better assess the gonadotoxic potential of drugs prior to progression into clinical trials...
February 17, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339631/evidence-for-the-involvement-of-the-proximal-copy-of-the-magea9-gene-in-xq28-linked-cnv67-specific-to-spermatogenic-failure%C3%A2
#12
Ying Shen, Jinyan Xu, Xiling Yang, Yunqiang Liu, Yongyi Ma, Dong Yang, Qiang Dong, Yuan Yang
Spermatogenic failure characterized by impaired sperm production is a common multifactorial disease with molecular and cytogenetic causes for its extreme phenotype that include azoospermia and severe oliogzoospermia. Recently, a high-resolution array-comparative genomic hybridization analysis of the X chromosome and a subsequent cohort study revealed three X-linked microdeletions (CNV64, CNV67, and CNV69) that were associated with decreased sperm production in a mixed group that included Spanish and Italian males...
February 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339613/a-nonsense-mutation-in-ccdc62-gene-is-responsible-for-spermiogenesis-defects-and-male-infertility-in-repro29-repro29-mice%C3%A2
#13
Yuchi Li, Cailing Li, Shouren Lin, Bo Yang, Weiren Huang, Hanwei Wu, Yuanbin Chen, Lihua Yang, Manling Luo, Huan Guo, Jianbo Chen, Tiantian Wang, Qian Ma, Yanli Gu, Lisha Mou, Zhimao Jiang, Jun Xia, Yaoting Gui
Phenotype-driven mutagenesis is an unbiased method to identify novel genes involved in spermatogenesis and other reproductive processes. Male repro29/repro29 mice generated by the Reproductive Genomics Program at the Jackson Laboratory were infertile with deformed sperm and poor motility. Using selected exonic capture and massively parallel sequencing technologies, we identified a nonsense mutation in the exon 6 of coiled-coil domain-containing 62 gene (Ccdc62), which results in a formation of a premature stop codon and a truncated protein...
January 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339488/mutations-in-the-maize-zeta-carotene-desaturase-gene-lead-to-viviparous-kernel
#14
Yan Chen, Jiankun Li, Kaijian Fan, Yicong Du, Zhenjing Ren, Jing Xu, Jun Zheng, Yunjun Liu, Junjie Fu, Dongtao Ren, Guoying Wang
Preharvest sprouting reduces the maize quality and causes a significant yield loss in maize production. vp-wl2 is a Mutator (Mu)-induced viviparous mutant in maize, causing white or pale yellow kernels, dramatically reduced carotenoid and ABA content, and a high level of zeta-carotene accumulation. Here, we reported the cloning of the vp-wl2 gene using a modified digestion-ligation-amplification method (DLA). The results showed that an insertion of Mu9 in the first intron of the zeta-carotene desaturase (ZDS) gene results in the vp-wl2 mutation...
2017: PloS One
https://www.readbyqxmd.com/read/28339479/mouse-newborn-cells-allow-highly-productive-mouse-cytomegalovirus-replication-constituting-a-novel-convenient-primary-cell-culture-system
#15
Vu Thuy Khanh Le-Trilling, Mirko Trilling
Mammalian cell culture is indispensable for most aspects of current biomedical research. Immortalized cell lines are very convenient, but transforming principles (e.g. oncogenic viruses or their oncogenes) can heavily influence the experimental outcome. Primary cells do not share this apparent disadvantage but are more laborious to generate. Certain viruses (e.g. mouse cytomegalovirus) do not replicate efficiently in most transformed cell lines. In the past, such viruses have been routinely propagated on primary mouse embryonic fibroblasts (MEF) established around day 17 (d17) of gestation...
2017: PloS One
https://www.readbyqxmd.com/read/28339459/functional-classification-of-dna-variants-by-hybrid-minigenes-identification-of-30-spliceogenic-variants-of-brca2-exons-17-and-18
#16
Eugenia Fraile-Bethencourt, Beatriz Díez-Gómez, Valeria Velásquez-Zapata, Alberto Acedo, David J Sanz, Eladio A Velasco
Mutation screening of the breast cancer genes BRCA1 and BRCA2 identifies a large fraction of variants of uncertain clinical significance (VUS) whose functional and clinical interpretations pose a challenge for genomic medicine. Likewise, an increasing amount of evidence indicates that genetic variants can have deleterious effects on pre-mRNA splicing. Our goal was to investigate the impact on splicing of a set of reported variants of BRCA2 exons 17 and 18 to assess their role in hereditary breast cancer and to identify critical regulatory elements that may constitute hotspots for spliceogenic variants...
March 24, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28339176/identification-of-likely-associations-between-cerebral-folate-deficiency-and-complex-genetic-and-metabolic-pathogenesis-of-autism-spectrum-disorders-by-utilization-of-a-pilot-interaction-modeling-approach
#17
Daniel Krsička, Jan Geryk, Markéta Vlčková, Markéta Havlovicová, Milan Macek, Radka Pourová
Recently, cerebral folate deficiency (CFD) was suggested to be involved in the pathogenesis of autism spectrum disorders (ASD). However, the exact role of folate metabolism in the pathogenesis of ASD, identification of underlying pathogenic mechanisms and impaired metabolic pathways remain unexplained. The aim of our study was to develop and test a novel, unbiased, bioinformatics approach in order to identify links between ASD and disturbed cerebral metabolism by focusing on abnormal folate metabolism, which could foster patient stratification and novel therapeutic interventions...
March 24, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28339163/next-generation-sequencing-of-urine-specimens-a-novel-platform-for-genomic-analysis-in-patients-with-non-muscle-invasive-urothelial-carcinoma-treated-with-bacille-calmette-gu%C3%A3-rin
#18
Sasinya N Scott, Irina Ostrovnaya, Caroline M Lin, Nancy Bouvier, Bernard H Bochner, Gopakumar Iyer, David Solit, Michael F Berger, Oscar Lin
BACKGROUND: Biopsies from patients with high-risk (HR) non-muscle-invasive urothelial carcinoma (NMIUC), especially flat urothelial carcinoma in situ, frequently contain scant diagnostic material or denuded mucosa only, and this precludes further extensive genomic analysis. This study evaluated the use of next-generation sequencing (NGS) analysis of urine cytology material from patients with HR NMIUC in an attempt to identify genetic alterations that might correlate with clinical features and responses to bacille Calmette-Guérin (BCG) treatment...
March 24, 2017: Cancer
https://www.readbyqxmd.com/read/28339086/identification-of-novel-mutations-in-endometrial-cancer-patients-by-whole-exome-sequencing
#19
Ya-Sian Chang, Hsien-Da Huang, Kun-Tu Yeh, Jan-Gowth Chang
The aim of the present study was to identify genomic alterations in Taiwanese endometrial cancer patients. This information is vitally important in Taiwan, where endometrial cancer is the second most common gynecological cancer. We performed whole-exome sequencing on DNA from 14 tumor tissue samples from Taiwanese endometrial cancer patients. We used the Genome Analysis Tool kit software package for data analysis, and the dbSNP, Catalogue of Somatic Mutations in Cancer (COSMIC) and The Cancer Genome Atlas (TCGA) databases for comparisons...
March 20, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28339084/transcriptional-activation-of-pd-l1-by-sox2-contributes-to-the-proliferation-of-hepatocellular-carcinoma-cells
#20
Feng Zhong, Xinsheng Cheng, Shibo Sun, Jie Zhou
Hepatocellular carcinoma (HCC) is one of the most common and lethal malignancies in the world. Sox2 is a potential oncogene in the pathogenesis of HCC, however, the actual mechanisms of Sox2 functions in HCC has not emerged yet. In this study, we explored the expression, function and the relationship between Sox2 and PD-L1 in HCC. We found that both Sox2 and PD-L1 were expressed at a markedly higher level in HCC tissues in comparison to adjacent non-tumor tissues. Moreover, the expression levels of both genes were correlated with each other...
March 23, 2017: Oncology Reports
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