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https://www.readbyqxmd.com/read/28813705/the-lncrna-tug1-ezh2-axis-promotes-pancreatic-cancer-cell-proliferation-migration-and-emt-phenotype-formation-through-sponging-mir-382
#1
Liang Zhao, Hongwei Sun, Hongru Kong, Zongjing Chen, Bicheng Chen, Mengtao Zhou
BACKGROUND/AIMS: Pancreatic carcinoma (PC) is the one of the most common and malignant cancers worldwide. LncRNA taurine upregulated gene 1 (TUG1) was initially identified as a transcript upregulated by taurine, and the abnormal expression of TUG1 has been reported in many cancers. However, the biological role and molecular mechanism of TUG1 in PC still needs further investigation. METHODS: Quantitative real-time PCR (qRT-PCR) was performed to measure the expression of TUG1 in PC cell lines and tissues...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28812395/current-research-on-circular-rnas-associated-with-colorectal-cancer
#2
Penghui Wang, Xiaodong He
Representing a novel type of endogenous noncoding RNAs, circular RNAs (circRNAs) have recently gained much attention for their involvement in multiple biological processes. CircRNAs are ubiquitously expressed in eukaryotic cells and modulate gene expression by acting as sponges of microRNAs (miRNAs) or other proteins, such as RNA-binding proteins (RBPs). Due to their unique structure, circRNAs are more stable than linear RNAs. Expression profiles of circRNAs are associated with clinicopathological characteristics of colorectal cancer patients, such as differentiation, TNM classification and distant metastasis...
August 16, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28812276/arundic-acid-increases-expression-and-function-of-astrocytic-glutamate-transporter-eaat1-via-the-erk-akt-and-nf-%C3%AE%C2%BAb-pathways
#3
Pratap Karki, Peter Hong, James Johnson, Edward Pajarillo, Deok-Soo Son, Michael Aschner, Eunsook Y Lee
Glutamate is the major excitatory neurotransmitter in the brain, but excessive synaptic glutamate must be removed to prevent excitotoxic injury and death. Two astrocytic glutamate transporters, excitatory amino acid transporter (EAAT) 1 and 2, play a major role in eliminating excess glutamate from the synapse. Dysregulation of EAAT1 contributes to the pathogenesis of multiple neurological disorders, such as Alzheimer's disease (AD), ataxia, traumatic brain injuries, and glaucoma. In the present study, we investigated the effect of arundic acid on EAAT1 to determine its efficacy in enhancing the expression and function of EAAT1, and its possible mechanisms of action...
August 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28812261/backbone-and-side-chain-1-h-15-n-and-13-c-resonance-assignments-of-two-sac10b-family-members-mvo10b-and-mth10btqqa-from-archaea
#4
Jinsong Xuan, Hongwei Yao, Yingang Feng, Jinfeng Wang
The Sac10b family proteins, also named as Alba, are small, basic, nucleic acid-binding proteins widely distributed in archaea. They possess divergent physiological functions such as binding to both DNA and RNA with a high affinity and involving in genomic DNA compaction, RNA transactions and transcriptional regulations. The structures of many Sac10b family proteins from hyperthermophilic archaea have been reported, while those from thermophilic and mesophilic archaea are largely unknown. As was pointed out, the homologous members from thermophilic and mesophilic archaea may have functions different from the hyperthermophilic members...
August 16, 2017: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/28811863/long-noncoding-rnas-and-rna-binding-proteins-in-oxidative-stress-cellular-senescence-and-age-related-diseases
#5
REVIEW
Chongtae Kim, Donghee Kang, Eun Kyung Lee, Jae-Seon Lee
Cellular senescence is a complex biological process that leads to irreversible cell-cycle arrest. Various extrinsic and intrinsic insults are associated with the onset of cellular senescence and frequently accompany genomic or epigenomic alterations. Cellular senescence is believed to contribute to tumor suppression, immune response, and tissue repair as well as aging and age-related diseases. Long noncoding RNAs (lncRNAs) are >200 nucleotides long, poorly conserved, and transcribed in a manner similar to that of mRNAs...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28811754/comparative-genome-analysis-of-rathayibacter-tritici-ncppb-1953-with-rathayibacter-toxicus-strains-can-facilitate-studies-on-mechanisms-of-nematode-association-and-host-infection
#6
Jungwook Park, Pyeong An Lee, Hyun-Hee Lee, Kihyuck Choi, Seon-Woo Lee, Young-Su Seo
Rathayibacter tritici, which is a Gram positive, plant pathogenic, non-motile, and rod-shaped bacterium, causes spike blight in wheat and barley. For successful pathogenesis, R. tritici is associated with Anguina tritici, a nematode, which produces seed galls (ear cockles) in certain plant varieties and facilitates spread of infection. Despite significant efforts, little research is available on the mechanism of disease or bacteria-nematode association of this bacterium due to lack of genomic information. Here, we report the first complete genome sequence of R...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811334/argonaute-8-ago8-mediates-the-elicitation-of-primary-defense-against-herbivory
#7
Maitree Pradhan, Priyanka Pandey, Klaus Gase, Murali Shraff, Ravi K Singh, Avinash Sethi, Ian T Baldwin, Shree P Pandey
In Nicotiana attenuata, specific RNA directed RNA polymerase (RdR1) and the Dicer-like proteins (DCL3 and 4) are recruited during herbivore attack to mediate the regulation of defense responses. However, the identity and role(s) of Argonautes (AGOs) involved in herbivory remains unknown. Of the 11 AGOs in the N. attenuata genome, we silenced the expression of 10. Plants silenced in NaAGO8 expression grew normally but were highly susceptible to herbivore attack. Larvae of the Manduca sexta grew faster when consuming irAGO8 plants, but did not differ from WT when consuming plants silenced in AGO1 (a, b and c), AGO2, AGO4 (a and b), AGO7, or AGO10 expression...
August 15, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28810828/suitable-reference-gene-for-quantitative-real-time-pcr-analysis-of-gene-expression-in-gonadal-tissues-of-minnow-puntius-sophore-under-high-temperature-stress
#8
Arabinda Mahanty, Gopal Krishna Purohit, Sasmita Mohanty, Nihar Ranjan Nayak, Bimal Prasanna Mohanty
BACKGROUND: High ambient temperature is known to affect fish gonadal development and physiology in a variety of ways depending on the severity and duration of exposure; however, the underlying molecular mechanisms are poorly understood. Gonadal gene expression influence the gonadal development, physiology and the quality of egg/sperm produced in teleosts and the mechanistic understanding of spatio-temporal changes in the gonadal gene expression could be instrumental in controlling the fate of egg/sperm and the quality of seed produced...
August 15, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28810637/binding-of-line-1-rna-to-psf-transcriptionally-promotes-gage6-and-regulates-cell-proliferation-and-tumor-formation-in-vitro
#9
Jiao Lv, Ziyi Zhao
Hepatocellular carcinoma (HCC) has one of the highest mortality rates among numerous types of cancer. It has been demonstrated that in hepatitis B (HBV)-associated HCC, the expression of chimeric fusion transcript HBx-long interspersed nuclear element-1 (LINE-1) initiated by HBV integration is correlated with hepatocarcinogenesis and poor patient survival rates. Furthermore, increased rates of LINE-1 hypomethylation have been detected in HCC tissues compared with adjacent tissues. This suggests that individual LINE-1 RNA (L1 RNA) serves an important role in the processes of hepatocarcinogenesis...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810605/microrna-19a-promotes-nasopharyngeal-carcinoma-by-targeting-transforming-growth-factor-%C3%AE-receptor-2
#10
Fang Ma, Zhiyuan Wang, Jingjing Wang, Xianling Liu, Chunhong Hu
MicroRNA (miR), a class of small non-coding RNA, function as key regulators in gene expression through directly binding to the 3' untranslated region of their target mRNA, which further leads to translational repression or mRNA degradation. miR-19a, a member of miR-17-92 cluster, has an oncogenic role in a variety of malignant tumors. However, the exact role of miR-19a in nasopharyngeal carcinoma (NPC) has not previously been studied. The present study aimed to investigate the function and mechanism of miR-19a in regulating the viability and invasion of NPC cells...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810544/microrna-9-inhibits-the-proliferation-and-migration-of-malignant-melanoma-cells-via-targeting-sirituin-1
#11
Pingyuan Bu, Chengqun Luo, Quanyong He, Ping Yang, Xi Li, Dan Xu
MicroRNA (miR) are a class of small non-coding RNA that are able to inhibit gene expression by directly binding to the 3' untranslated region (UTR) of their target mRNA and thus promote translational repression or mRNA degradation. Recently, miR-9 was reported to have a suppressive role in malignant melanoma; however, the underlying mechanism remains largely unclear. In the present study, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blotting were used to examine the mRNA and protein expression levels in malignant melanoma tissues and cell lines...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809766/crispr-cas9-editing-of-nf1-gene-identifies-crmp2-as-a-therapeutic-target-in-neurofibromatosis-type-1-related-pain-that-is-reversed-by-s-lacosamide
#12
Aubin Moutal, Xiaofang Yang, Wennan Li, Kerry B Gilbraith, Shizhen Luo, Song Cai, Liberty François-Moutal, Lindsey A Chew, Seul Ki Yeon, Shreya S Bellampalli, Chaoling Qu, Jennifer Y Xie, Mohab M Ibrahim, May Khanna, Ki Duk Park, Frank Porreca, Rajesh Khanna
Neurofibromatosis type 1 (NF1) is a rare autosomal dominant disease linked to mutations of the Nf1 gene. Patients with NF1 commonly experience severe pain. Studies on mice with Nf1 haploinsufficiency have been instructive in identifying sensitization of ion channels as a possible cause underlying the heightened pain suffered by patients with NF1. However, behavioral assessments of Nf1 mice have led to uncertain conclusions about the potential causal role of Nf1 in pain. We used the clustered regularly interspaced short palindromic repeats (CRISPR)-associated 9 (CRISPR/Cas9) genome editing system to create and mechanistically characterize a novel rat model of NF1-related pain...
July 3, 2017: Pain
https://www.readbyqxmd.com/read/28808919/backbone-and-side-chain-assignments-of-the-second-rna-binding-domain-of-musashi-1-in-its-free-form-and-in-complex-with-5-mer-rna
#13
Ryo Iwaoka, Takashi Nagata, Kengo Tsuda, Takao Imai, Hideyuki Okano, Naohiro Kobayashi, Masato Katahira
Musashi1 (Msi1) is an RNA-binding protein that is involved in cell fate determination. Here, we report the (1)H, (15)N, and (13)C resonance assignments of Msi1 second RNA-binding domain in free form and in complex with RNA. The assignments can be utilized for NMR structure and dynamics analyses of the Msi1:RNA complex, and moreover, for chemical shift perturbation analyses to evaluate the binding of potential small molecule inhibitors against Msi1:RNA interaction.
August 14, 2017: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/28808873/elevated-hu-antigen-receptor-hur-expression-is-associated-with-tumor-aggressiveness-and-poor-prognosis-but-not-with-cox-2-expression-in-invasive-breast-carcinoma-patients
#14
Constantinos Giaginis, Anastasia Sampani, Iolly Kotta-Loizou, Ioanna Giannopoulou, Eugene Danas, Ekaterini Politi, Gerasimos Tsourouflis, Gregorios Kouraklis, Efstratios Patsouris, Antonios Keramopoulos, Lydia Nakopoulou, Stamatios Theocharis
Hu-antigen R (HuR), a RNA-binding protein, is considered to play a crucial role in tumor development and progression by stabilizing or regulating a group of cellular mRNAs of cancer-related genes, such as cyclooxygenase-2 (COX-2). The present study aimed to evaluate the clinical significance of HuR and COX-2 expression in invasive breast carcinoma. HuR and COX-2 protein expression was assessed immunohistochemically on paraffin-embedded breast cancer tissue sections obtained from 121 patients and was statistically analyzed with clinicopathological parameters, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2), as well as with tumor cells' proliferative capacity and overall and disease-free patients' survival...
August 14, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28808806/brca1-mimetic-compound-nsc35446-hcl-inhibits-ikkb-expression-by-reducing-estrogen-receptor-%C3%AE-occupancy-in-the-ikkb-promoter-and-inhibits-nf-%C3%AE%C2%BAb-activity-in-antiestrogen-resistant-human-breast-cancer-cells
#15
Shyam Nathan, Yongxian Ma, York A Tomita, Eliseu De Oliveira, Milton L Brown, Eliot M Rosen
PURPOSE: We previously identified small molecules that fit into a BRCA1-binding pocket within estrogen receptor-alpha (ERα), mimic the ability of BRCA1 to inhibit ERα activity ("BRCA1-mimetics"), and overcome antiestrogen resistance. One such compound, the hydrochloride salt of NSC35446 ("NSC35446.HCl"), also inhibited the growth of antiestrogen-resistant LCC9 tumor xenografts. The purpose of this study was to investigate the down-stream effects of NSC35446.HCl and its mechanism of action...
August 14, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28808417/down-regulation-of-aminopeptidase-n-and-abc-transporter-subfamily-g-transcripts-in-cry1ab-and-cry1ac-resistant-asian-corn-borer-ostrinia-furnacalis-lepidoptera-crambidae
#16
Tiantao Zhang, Brad S Coates, Yueqin Wang, Yidong Wang, Shuxiong Bai, Zhenying Wang, Kanglai He
The Asian corn borer (ACB), Ostrinia furnacalis (Lepidoptera: Crambidae), is a highly destructive pest of cultivated maize throughout East Asia. Bacillus thuringiensis (Bt) crystalline protein (Cry) toxins cause mortality by a mechanism involving pore formation or signal transduction following toxin binding to receptors along the midgut lumen of susceptible insects, but this mechanism and mutations therein that lead to resistance are not fully understood. In the current study, quantitative comparisons were made among midgut expressed transcripts from O...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28808133/the-rph-1-encoded-truncated-rnase-ph-protein-inhibits-rnase-p-maturation-of-pre-trnas-with-short-leader-sequences-in-the-absence-of-rpph
#17
Katherine E Bowden, Nicholas S Wiese, Tariq Perwez, Bijoy K Mohanty, Sidney R Kushner
RNase PH, encoded by the rph gene, is a 3' → 5' exoribonuclease that in E. coli participates primarily in the 3' maturation of pre-tRNAs and the degradation of ribosomal RNA (rRNA) in stationary phase cells. Interestingly, the routinely used laboratory strains of MG1655 and W3110 have naturally acquired the rph-1 allele encoding a truncated, catalytically inactive RNase PH protein, which is widely assumed to be benign. Contrary to this assumption, we show that rph-1 encoded Rph-1 protein inhibits RNase P mediated 5' end maturation of primary pre-tRNAs with leaders < 5 nucleotides in the absence of RppH, an RNA pyrophosphohydrolase...
August 14, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28808060/the-human-rna-binding-protein-and-e3-ligase-mex-3c-binds-the-mex-3-recognition-element-mre-motif-with-high-affinity
#18
Lingna Yang, Chongyuan Wang, Fudong Li, Jiahai Zhang, Anam Nayab, Jihui Wu, Yunyu Shi, Qingguo Gong
MEX-3 is a KH domain-containing RNA-binding protein, first identified as a translational repressor in Caenorhabditis elegans, while its four orthologs (MEX-3A-D) in human and mouse were subsequently found to have E3 ubiquitin ligase activity mediated by a RING domain and critical for RNA degradation. Current evidence implicates human MEX-3C in many essential biological processes and suggests a strong connection with immune diseases and carcinogenesis. The highly conserved dual KH domains in MEX-3 proteins enable RNA binding and are essential for the recognition of the 3' UTR and posttranscriptional regulation of MEX-3 target transcripts...
August 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28808021/kinetic-and-high-throughput-profiling-of-epigenetic-interactions-by-3d-carbene-chip-based-surface-plasmon-resonance-imaging-technology
#19
Shuai Zhao, Mo Yang, Wenfei Zhou, Baichao Zhang, Zhiqiang Cheng, Jiaxin Huang, Min Zhang, Zhiyou Wang, Rui Wang, Zhonglei Chen, Jinsong Zhu, Haitao Li
Chemical modifications on histones and DNA/RNA constitute a fundamental mechanism for epigenetic regulation. These modifications often function as docking marks to recruit or stabilize cognate "reader" proteins. So far, a platform for quantitative and high-throughput profiling of the epigenetic interactome is urgently needed but still lacking. Here, we report a 3D-carbene chip-based surface plasmon resonance imaging (SPRi) technology for this purpose. The 3D-carbene chip is suitable for immobilizing versatile biomolecules (e...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28808009/a-protein-complex-regulates-rna-processing-of-intronic-heterochromatin-containing-genes-in-arabidopsis
#20
Cheng-Guo Duan, Xingang Wang, Lingrui Zhang, Xiansong Xiong, Zhengjing Zhang, Kai Tang, Li Pan, Chuan-Chih Hsu, Huawei Xu, W Andy Tao, Heng Zhang, Jian-Kang Zhu
In several eukaryotic organisms, heterochromatin (HC) in the introns of genes can regulate RNA processing, including polyadenylation, but the mechanism underlying this regulation is poorly understood. By promoting distal polyadenylation, the bromo-adjacent homology (BAH) domain-containing and RNA recognition motif-containing protein ASI1 and the H3K9me2-binding protein EDM2 are required for the expression of functional full-length transcripts of intronic HC-containing genes in Arabidopsis Here we report that ASI1 and EDM2 form a protein complex in vivo via a bridge protein, ASI1-Immunoprecipitated Protein 1 (AIPP1), which is another RNA recognition motif-containing protein...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
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