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https://www.readbyqxmd.com/read/28212565/the-mir-675-5p-regulates-the-progression-and-development-of-pancreatic-cancer-via-the-ubqln1-zeb1-mir200-axis
#1
Jue Wang, Youli Zhang, Hong Wei, Xingxing Zhang, Yan Wu, Aihua Gong, Yu Xia, Wenbing Wang, Min Xu
Pancreatic cancer (PC) is a highly lethal disease due to extensive metastatic lesions. Accumulating evidence suggests that miR-675-5p plays different roles in metastasis through the regulation of epithelial to mesenchymal (EMT) and the mesenchymal to epithelial transitions (MET) in different cancers. ZEB1 promotes the EMT process by controlling the expression of E-cadherin and may have a reciprocal regulation with Ubiquilin1 (UBQLN1) and mir-200 family in cancer progression. In the present study, we showed that decreased expression of miR-675-5p is associated with the enhanced cell proliferation and survival of PC cells, while the increased expression of mir-675-5p shows the opposite one...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212453/bone-morphogenetic-protein-2-hybridized-with-nano-anchored-oligonucleotides-on-titanium-implants-enhances-osteogenic-differentiation-in-vivo
#2
Florian Böhrnsen, Jennifer Rublack, Nelia Aeckerle, Anne Foerster, Bernd Schwenzer, Judith Reichert, Dieter Scharnweber, Henning Schliephake
PURPOSE: Previous in vitro studies have shown that DNA oligonucleotides (ODN) can be successfully used as anchor strands for the binding and retarded release of biologically active recombinant human bone morphogenetic protein 2 (rhBMP-2). The aim of the present study was to test the hypothesis that rhBMP-2 bound to the surface of titanium implants through hybridization with nano-anchored ODN strands is biologically active and can enhance the induction of osteogenic markers in peri-implant bone in vivo...
February 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28212430/a-calmodulin-like-protein-suppresses-rna-silencing-and-promotes-geminivirus-infection-by-degrading-sgs3-via-the-autophagy-pathway-in-nicotiana-benthamiana
#3
Fangfang Li, Nan Zhao, Zhenghe Li, Xiongbiao Xu, Yaqin Wang, Xiuling Yang, Shu-Sheng Liu, Aiming Wang, Xueping Zhou
A recently characterized calmodulin-like protein is an endogenous RNA silencing suppressor that suppresses sense-RNA induced post-transcriptional gene silencing (S-PTGS) and enhances virus infection, but the mechanism underlying calmodulin-like protein-mediated S-PTGS suppression is obscure. Here, we show that a calmodulin-like protein from Nicotiana benthamiana (NbCaM) interacts with Suppressor of Gene Silencing 3 (NbSGS3). Deletion analyses showed that domains essential for the interaction between NbSGS3 and NbCaM are also required for the subcellular localization of NbSGS3 and NbCaM suppressor activity...
February 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28212352/rta-occupancy-of-the-origin-of-lytic-replication-during-murine-gammaherpesvirus-68-reactivation-from-b-cell-latency
#4
Alexis L Santana, Darby G Oldenburg, Varvara Kirillov, Laraib Malik, Qiwen Dong, Roman Sinayev, Kenneth B Marcu, Douglas W White, Laurie T Krug
RTA, the viral Replication and Transcription Activator, is essential for rhadinovirus lytic gene expression upon de novo infection and reactivation from latency. Lipopolysaccharide (LPS)/toll-like receptor (TLR)4 engagement enhances rhadinovirus reactivation. We developed two new systems to examine the interaction of RTA with host NF-kappaB (NF-κB) signaling during murine gammaherpesvirus 68 (MHV68) infection: a latent B cell line (HE-RIT) inducible for RTA-Flag expression and virus reactivation; and a recombinant virus (MHV68-RTA-Bio) that enabled in vivo biotinylation of RTA in BirA transgenic mice...
February 16, 2017: Pathogens
https://www.readbyqxmd.com/read/28212323/low-intensity-extracorporeal-shock-wave-therapy-enhances-brain-derived-neurotrophic-factor-expression-through-perk-atf4-signaling-pathway
#5
Bohan Wang, Hongxiu Ning, Amanda B Reed-Maldonado, Jun Zhou, Yajun Ruan, Tie Zhou, Hsun Shuan Wang, Byung Seok Oh, Lia Banie, Guiting Lin, Tom F Lue
Low-intensity extracorporeal shock wave therapy (Li-ESWT) is used in the treatment of erectile dysfunction, but its mechanisms are not well understood. Previously, we found that Li-ESWT increased the expression of brain-derived neurotrophic factor (BDNF). Here we assessed the underlying signaling pathways in Schwann cells in vitro and in penis tissue in vivo after nerve injury. The result indicated that BDNF were significantly increased by the Li-ESWT after nerve injury, as well as the expression of BDNF in Schwann cells (SCs, RT4-D6P2T) in vitro...
February 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28211965/first-synthesis-of-an-oridonin-conjugated-iridium-iii-complex-for-the-intracellular-tracking-of-nf-%C3%AE%C2%BAb-in-living-cells
#6
Wanhe Wang, Chao Yang, Sheng Lin, Kasipandi Vellaisamy, Guodong Li, Weihong Tan, Chung-Hang Leung, Dik-Lung Ma
NF-κB is a critical transcription factor that plays an important role in mediating inflammation, the immune response, and cell proliferation. The activation of NF-κB leads to an enhancement of proinflammatory mediator expression, which is implicated in the pathogenesis of a variety of diseases. Therefore, methods that allow the intracellular tracking of NF-κB are particularly attractive as they can provide information regarding the pathways or stimulation responses that are involved in the activation of NF-κB...
February 17, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28211874/datf4-regulation-of-mitochondrial-folate-mediated-one-carbon-metabolism-is-neuroprotective
#7
Ivana Celardo, Susann Lehmann, Ana C Costa, Samantha Hy Loh, L Miguel Martins
Neurons rely on mitochondria as their preferred source of energy. Mutations in PINK1 and PARKIN cause neuronal death in early-onset Parkinson's disease (PD), thought to be due to mitochondrial dysfunction. In Drosophila pink1 and parkin mutants, mitochondrial defects lead to the compensatory upregulation of the mitochondrial one-carbon cycle metabolism genes by an unknown mechanism. Here we uncover that this branch is triggered by the activating transcription factor 4 (ATF4). We show that ATF4 regulates the expression of one-carbon metabolism genes SHMT2 and NMDMC as a protective response to mitochondrial toxicity...
February 17, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28211873/the-p53-family-members-have-distinct-roles-during-mammalian-embryonic-development
#8
Jeanine L Van Nostrand, Margot E Bowen, Hannes Vogel, Maria Barna, Laura D Attardi
The p53 tumor suppressor is a member of a multi-protein family, including the p63 and p73 transcription factors. These proteins can bind to the same consensus sites in DNA and activate the same target genes, suggesting that there could be functional redundancy between them. Indeed, double mutant mice heterozygous for any two family member-encoding genes display enhanced cancer phenotypes relative to single heterozygous mutants. However, whether the family members play redundant roles during embryonic development has remained largely unexplored...
February 17, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28211524/epigenetic-and-genetic-dissections-of-uv-induced-global-gene-dysregulation-in-skin-cells-through-multi-omics-analyses
#9
Yao Shen, Milda Stanislauskas, Gen Li, Deyou Zheng, Liang Liu
To elucidate the complex molecular mechanisms underlying the adverse effects UV radiation (UVR) on skin homeostasis, we performed multi-omics studies to characterize UV-induced genetic and epigenetic changes. Human keratinocytes from a single donor treated with or without UVR were analyzed by RNA-seq, exome-seq, and H3K27ac ChIP-seq at 4 h and 72 h following UVR. Compared to the relatively moderate mutagenic effects of UVR, acute UV exposure induced substantial epigenomic and transcriptomic alterations, illuminating a previously underappreciated role of epigenomic and transcriptomic instability in skin pathogenesis...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210815/structural-proteins-of-helicoverpa-armigera-densovirus-2-enhance-transcription-of-viral-genes-through-transactivation
#10
Pengjun Xu, He Yuan, Xianming Yang, Robert I Graham, Kaiyu Liu, Kongming Wu
Herein, we report the identification of putative promoters for the non-structural proteins (NS) and capsid structural proteins (VP) of Helicoverpa armigera densovirus (HaDV2) as well as a potential mechanism for how these promoters might be regulated. For the first time, we report that VP is able to transactivate the VP promoter and, to a lesser degree, the NS promoter in densoviruses. In addition to this, another promoter-like sequence designated P2, when co-transfected with the VP gene, enhanced luciferase activity by approximately 35 times compared to a control...
February 16, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28210006/a-novel-lsd1-inhibitor-ncd38-ameliorates-mds-related-leukemia-with-complex-karyotype-by-attenuating-leukemia-programs-via-activating-super-enhancers
#11
N Sugino, M Kawahara, G Tatsumi, A Kanai, H Matsui, R Yamamoto, Y Nagai, S Fujii, Y Shimazu, M Hishizawa, T Inaba, A Andoh, T Suzuki, A Takaori-Kondo
Lysine-specific demethylase 1 (LSD1) regulates gene expression by affecting histone modifications and is a promising target for acute myeloid leukemia (AML) with specific genetic abnormalities. Novel LSD1 inhibitors, NCD25 and NCD38, inhibited growth of MLL-AF9 leukemia as well as erythroleukemia, megakaryoblastic leukemia and myelodysplastic syndromes (MDS) overt leukemia cells in the concentration range that normal hematopoiesis was spared. NCD25 and NCD38 invoked the myeloid development programs, hindered the MDS and AML oncogenic programs, and commonly upregulated 62 genes in several leukemia cells...
February 17, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28209947/forkhead-box-protein-j1-foxj1-is-overexpressed-in-colorectal-cancer-and-promotes-nuclear-translocation-of-%C3%AE-catenin-in-sw620-cells
#12
Kuiliang Liu, Jianghao Fan, Jing Wu
BACKGROUND FOXJ1, which is a forkhead transcription factor, has been previously studied mostly as a ciliary transcription factor. The role of FOXJ1 in cancer progression is still elusive and controversial. In the present study, the effect of FOXJ1 in progression of colorectal cancer (CRC) was investigated. MATERIAL AND METHODS The pattern of FOXJ1 expression was investigated using the method of immunohistochemistry (IHC) in a tissue microarray (TMA) incorporating 50 pairs of colon cancer specimens and adjacent normal tissue...
February 17, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28209842/phosphorylation-of-sporocyteless-nozzle-by-the-mpk3-6-kinase-is-required-for-anther-development
#13
Feng Zhao, Ya-Feng Zheng, Ting Zeng, Rui Sun, Ji-Yuan Yang, Yuan Li, Dongtao Ren, Hong Ma, Zhi-Hong Xu, Shu-Nong Bai
Germ cells are indispensable carriers of genetic information from one generation to the next. In contrast to the well-understood process in animals, information on the mechanism of germ cell initiation in plants is very limited. SPOROCYTELESS/NOZZLE (SPL/NZZ) was previously identified as an essential regulator of diploid germ cell (archesporial cell) differentiation in the stamens and ovules of Arabidopsis thaliana. Although SPL transcription is activated by the floral organ identity regulator AGAMOUS (AG) and epigenetically regulated by SET DOMAIN GROUP2 (SDG2), little is known about the regulation of the SPL protein...
February 16, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28209720/acquired-expression-of-cbl-q367p-in-mice-induces-dysplastic-myelopoiesis-mimicking-chronic-myelomonocytic-leukemia
#14
Yuichiro Nakata, Takeshi Ueda, Akiko Nagamachi, Norimasa Yamasaki, Ken-Ichiro Ikeda, Yasuyuki Sera, Keiyo Takubo, Akinori Kanai, Hideaki Oda, Masashi Sanada, Seishi Ogawa, Kohichiro Tsuji, Yasuhiro Ebihara, Linda Wolff, Zen-Ichiro Honda, Toshio Suda, Toshiya Inaba, Hiroaki Honda
Chronic myelomonocytic leukemia (CMML) is a hematological malignancy characterized by uncontrolled proliferation of dysplastic myelomonocytes and frequent progression to acute myeloid leukemia (AML). We identified mutations in the Cbl gene, which encodes a negative regulator of cytokine signaling, in a subset of CMML patients. To investigate the contribution of mutant Cbl in CMML pathogenesis, we generated conditional knock-in mice for Cbl that express wild-type Cbl in a steady state and inducibly express Cbl(Q367P) , a CMML-associated Cbl mutant...
February 16, 2017: Blood
https://www.readbyqxmd.com/read/28209498/genome-wide-screening-of-transcription-factor-deletion-targets-in-escherichia-coli-for-enhanced-production-of-lactate-based-polyesters
#15
Ryosuke Kadoya, Yu Kodama, Ken'ichiro Matsumoto, Toshihiko Ooi, Seiichi Taguchi
Engineered Escherichia coli is a useful platform for production of lactate (LA)-based polyester poly[LA-co-3-hydroxybutyrate (3HB)] from renewable sugars. Here we screened all non-lethal transcription factor deletions of E. coli for efficient production of the polymer. This approach aimed at drawing out the latent potential of the host for efficient polymer production via indirect positive effects. Among 252 mutants from Keio Collection tested, eight mutants (ΔpdhR, ΔcspG, ΔyneJ, ΔchbR, ΔyiaU, ΔcreB, ΔygfI and ΔnanK) accumulated greater amount of polymer (6...
February 13, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28209269/association-of-matrix-metalloproteinase-levels-with-collagen-degradation-in-the-context-of-abdominal-aortic-aneurysm
#16
V Klaus, F Tanios-Schmies, C Reeps, M Trenner, E Matevossian, H-H Eckstein, J Pelisek
OBJECTIVE/BACKGROUND: Matrix metalloproteinases (MMPs) have already been identified as key players in the pathogenesis of abdominal aortic aneurysm (AAA). However, the current data remain inconclusive. In this study, the expression of MMPs at mRNA and protein levels were investigated in relation to the degradation of collagen I and collagen III. METHODS: Tissue samples were obtained from 40 patients with AAA undergoing open aortic repair, and from five healthy controls during kidney transplantation...
February 10, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28209164/rnf40-regulates-gene-expression-in-an-epigenetic-context-dependent-manner
#17
Wanhua Xie, Sankari Nagarajan, Simon J Baumgart, Robyn Laura Kosinsky, Zeynab Najafova, Vijayalakshmi Kari, Magali Hennion, Daniela Indenbirken, Stefan Bonn, Adam Grundhoff, Florian Wegwitz, Ahmed Mansouri, Steven A Johnsen
BACKGROUND: Monoubiquitination of H2B (H2Bub1) is a largely enigmatic histone modification that has been linked to transcriptional elongation. Because of this association, it has been commonly assumed that H2Bub1 is an exclusively positively acting histone modification and that increased H2Bub1 occupancy correlates with increased gene expression. In contrast, depletion of the H2B ubiquitin ligases RNF20 or RNF40 alters the expression of only a subset of genes. RESULTS: Using conditional Rnf40 knockout mouse embryo fibroblasts, we show that genes occupied by low to moderate amounts of H2Bub1 are selectively regulated in response to Rnf40 deletion, whereas genes marked by high levels of H2Bub1 are mostly unaffected by Rnf40 loss...
February 16, 2017: Genome Biology
https://www.readbyqxmd.com/read/28209156/breastdefend-enhances-effect-of-tamoxifen-in-estrogen-receptor-positive-human-breast-cancer-in-vitro-and-in-vivo
#18
Shujie Cheng, Victor Castillo, Matt Welty, Mark Alvarado, Isaac Eliaz, Constance J Temm, George E Sandusky, Daniel Sliva
BACKGROUND: Tamoxifen (TAM) has been widely used for the treatment of estrogen receptor (ER)-positive breast cancer and its combination with other therapies is being actively investigated as a way to increase efficacy and decrease side effects. Here, we evaluate the therapeutic potential of co-treatment with TAM and BreastDefend (BD), a dietary supplement formula, in ER-positive human breast cancer. METHODS: Cell proliferation and apoptosis were determined in ER-positive human breast cancer cells MCF-7 by MTT assay, quantitation of cytoplasmic histone-associated DNA fragments and expression of cleaved PARP, respectively...
February 16, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28209150/penicillin-production-in-industrial-strain-penicillium-chrysogenum-p2niad18-is-not-dependent-on-the-copy-number-of-biosynthesis-genes
#19
Sandra Ziemons, Katerina Koutsantas, Kordula Becker, Tim Dahlmann, Ulrich Kück
BACKGROUND: Multi-copy gene integration into microbial genomes is a conventional tool for obtaining improved gene expression. For Penicillium chrysogenum, the fungal producer of the beta-lactam antibiotic penicillin, many production strains carry multiple copies of the penicillin biosynthesis gene cluster. This discovery led to the generally accepted view that high penicillin titers are the result of multiple copies of penicillin genes. Here we investigated strain P2niaD18, a production line that carries only two copies of the penicillin gene cluster...
February 16, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28209124/rna-seq-and-metabolomic-analyses-of-akt1-mediated-muscle-growth-reveals-regulation-of-regenerative-pathways-and-changes-in-the-muscle-secretome
#20
Chia-Ling Wu, Yoshinori Satomi, Kenneth Walsh
BACKGROUND: Skeletal muscle is a major regulator of systemic metabolism as it serves as the major site for glucose disposal and the main reservoir for amino acids. With aging, cachexia, starvation, and myositis, there is a preferential loss of fast glycolytic muscle fibers. We previously reported a mouse model in which a constitutively-active Akt transgene is induced to express in a subset of muscle groups leading to the hypertrophy of type IIb myofibers with an accompanying increase in strength...
February 16, 2017: BMC Genomics
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