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https://www.readbyqxmd.com/read/28526689/long-non-coding-rna-neat1-promotes-hepatocellular-carcinoma-cell-proliferation-through-the-regulation-of-mir-129-5p-vcp-i%C3%AE%C2%BAb
#1
Luo Fang, Jiao Sun, Zongfu Pan, Yu Song, Like Zhong, Yiwen Zhang, Yujia Liu, Xiaowei Zheng, Ping Huang
BACKGROUND: Long non-coding RNA (lncRNA) nuclear-enriched abundant transcript 1 (NEAT1) plays an important role in the pathogenesis and development of several types of cancer. However, the functional mechanism of NEAT1 in hepatocellular carcinoma (HCC) remains unclear. METHODS: The NEAT1 and miR-129-5p expression in HCC tissues and cell lines were quantified by means of qPCR. The effects of NEAT1 expression inhibition or up-regulation in HCC cell lines were analyzed in terms of cell viability and apoptosis...
May 19, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28524179/a-fkbp5-mutation-is-associated-with-paget-s-disease-of-bone-and-enhances-osteoclastogenesis
#2
Bingru Lu, Yulian Jiao, Yinchang Wang, Jing Dong, Muyun Wei, Bin Cui, Yafang Sun, Laicheng Wang, Bingchang Zhang, Zijiang Chen, Yueran Zhao
Paget's disease of bone (PDB) is a common metabolic bone disease that is characterized by aberrant focal bone remodeling, which is caused by excessive osteoclastic bone resorption followed by disorganized osteoblastic bone formation. Genetic factors are a critical determinant of PDB pathogenesis, and several susceptibility genes and loci have been reported, including SQSTM1, TNFSF11A, TNFRSF11B, VCP, OPTN, CSF1 and DCSTAMP. Herein, we report a case of Chinese familial PDB without mutations in known genes and identify a novel c...
May 19, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28512218/ubiquitin-and-atp-dependent-unfoldase-activity-of-p97-vcp%C3%A2-nploc4%C3%A2-ufd1l-is-enhanced-by-a-mutation-that-causes-multisystem-proteinopathy
#3
Emily E Blythe, Kristine C Olson, Vincent Chau, Raymond J Deshaies
p97 is a "segregase" that plays a key role in numerous ubiquitin (Ub)-dependent pathways such as ER-associated degradation. It has been hypothesized that p97 extracts proteins from membranes or macromolecular complexes to enable their proteasomal degradation; however, the complex nature of p97 substrates has made it difficult to directly observe the fundamental basis for this activity. To address this issue, we developed a soluble p97 substrate-Ub-GFP modified with K48-linked ubiquitin chains-for in vitro p97 activity assays...
May 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28498200/evaluating-the-veterans-choice-program-vcp-lessons-for-developing-a-high-performing-integrated-network
#4
Kristin M Mattocks, Baligh Yehia
No abstract text is available yet for this article.
May 11, 2017: Medical Care
https://www.readbyqxmd.com/read/28494016/the-host-ubiquitin-dependent-segregase-vcp-p97-is-required-for-the-onset-of-human-cytomegalovirus-replication
#5
Yao-Tang Lin, James Prendergast, Finn Grey
The human cytomegalovirus major immediate early proteins IE1 and IE2 are critical drivers of virus replication and are considered pivotal in determining the balance between productive and latent infection. IE1 and IE2 are derived from the same primary transcript by alternative splicing and regulation of their expression likely involves a complex interplay between cellular and viral factors. Here we show that knockdown of the host ubiquitin-dependent segregase VCP/p97, results in loss of IE2 expression, subsequent suppression of early and late gene expression and, ultimately, failure in virus replication...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28475898/molecular-mechanism-of-substrate-processing-by-the-cdc48-atpase-complex
#6
Nicholas O Bodnar, Tom A Rapoport
The Cdc48 ATPase and its cofactors Ufd1/Npl4 (UN) extract polyubiquitinated proteins from membranes or macromolecular complexes, but how they perform these functions is unclear. Cdc48 consists of an N-terminal domain that binds UN and two stacked hexameric ATPase rings (D1 and D2) surrounding a central pore. Here, we use purified components to elucidate how the Cdc48 complex processes substrates. After interaction of the polyubiquitin chain with UN, ATP hydrolysis by the D2 ring moves the polypeptide completely through the double ring, generating a pulling force on the substrate and causing its unfolding...
May 4, 2017: Cell
https://www.readbyqxmd.com/read/28451587/the-interplay-of-cofactor-interactions-and-post-translational-modifications-in-the-regulation-of-the-aaa-atpase-p97
#7
REVIEW
Petra Hänzelmann, Hermann Schindelin
The hexameric type II AAA ATPase (ATPase associated with various activities) p97 (also referred to as VCP, Cdc48, and Ter94) is critically involved in a variety of cellular activities including pathways such as DNA replication and repair which both involve chromatin remodeling, and is a key player in various protein quality control pathways mediated by the ubiquitin proteasome system as well as autophagy. Correspondingly, p97 has been linked to various pathophysiological states including cancer, neurodegeneration, and premature aging...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28443643/faf1-phosphorylation-by-akt-accumulates-tgf-%C3%AE-type-ii-receptor-and-drives-breast-cancer-metastasis
#8
Feng Xie, Ke Jin, Li Shao, Yao Fan, Yifei Tu, Yihao Li, Bin Yang, Hans van Dam, Peter Ten Dijke, Honglei Weng, Steven Dooley, Shuai Wang, Junling Jia, Jin Jin, Fangfang Zhou, Long Zhang
TGF-β is pro-metastatic for the late-stage breast cancer cells. Despite recent progress, the regulation of TGF-β type II receptor remains uncertain. Here we report that FAF1 destabilizes TβRII on the cell surface by recruiting the VCP/E3 ligase complex, thereby limiting excessive TGF-β response. Importantly, activated AKT directly phosphorylates FAF1 at Ser 582, which disrupts the FAF1-VCP complex and reduces FAF1 at the plasma membrane. The latter results in an increase in TβRII at the cell surface that promotes both TGF-β-induced SMAD and non-SMAD signalling...
April 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28430856/a-comprehensive-analysis-of-rare-genetic-variation-in-amyotrophic-lateral-sclerosis-in-the-uk
#9
Sarah Morgan, Aleksey Shatunov, William Sproviero, Ashley R Jones, Maryam Shoai, Deborah Hughes, Ahmad Al Khleifat, Andrea Malaspina, Karen E Morrison, Pamela J Shaw, Christopher E Shaw, Katie Sidle, Richard W Orrell, Pietro Fratta, John Hardy, Alan Pittman, Ammar Al-Chalabi
Amyotrophic lateral sclerosis is a progressive neurodegenerative disease of motor neurons. About 25 genes have been verified as relevant to the disease process, with rare and common variation implicated. We used next generation sequencing and repeat sizing to comprehensively assay genetic variation in a panel of known amyotrophic lateral sclerosis genes in 1126 patient samples and 613 controls. About 10% of patients were predicted to carry a pathological expansion of the C9orf72 gene. We found an increased burden of rare variants in patients within the untranslated regions of known disease-causing genes, driven by SOD1, TARDBP, FUS, VCP, OPTN and UBQLN2...
April 18, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28425440/the-valosin-containing-protein-is-a-novel-mediator-of-mitochondrial-respiration-and-cell-survival-in-the-heart-in-vivo
#10
Paulo Lizano, Eman Rashed, Shaunrick Stoll, Ning Zhou, Hairuo Wen, Tristan T Hays, Gangjian Qin, Lai-Hua Xie, Christophe Depre, Hongyu Qiu
The valosin-containing protein (VCP) participates in signaling pathways essential for cell homeostasis in multiple tissues, however, its function in the heart in vivo remains unknown. Here we offer the first description of the expression, function and mechanism of action of VCP in the mammalian heart in vivo in both normal and stress conditions. By using a transgenic (TG) mouse with cardiac-specific overexpression (3.5-fold) of VCP, we demonstrate that VCP is a new and powerful mediator of cardiac protection against cell death in vivo, as evidenced by a 50% reduction of infarct size after ischemia/reperfusion versus wild type...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423563/regulation-of-p53wt-glioma-cell-proliferation-by-androgen-receptor-mediated-inhibition-of-small-vcp-p97-interacting-protein-expression
#11
Dejun Bao, Chuandong Cheng, Xiaoqiang Lan, Rong Xing, Zhuo Chen, Hua Zhao, Junyan Sun, Yang Wang, Chaoshi Niu, Bo Zhang, Shengyun Fang
The incidence of glioma in men is higher than that in women; however, little is known about the expression and basic function of the androgen receptor (AR) in gliomas. AR inhibited the small VCP/p97-interacting protein (SVIP) on the transcriptional level was previously reported. The present study shows that the protein level of AR is highly expressed in cell lines of the nervous system. Moreover, the AR expression is increased while SVIP expression is decreased in tumor tissue of glioma patients, which is in agreement with the progressing WHO grades...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28410337/adaptation-of-lean-six-sigma-methodologies-for-the-evaluation-of-veterans-choice-program-at-3-urban-veterans-affairs-medical-centers
#12
Sherry L Ball, Lauren D Stevenson, Amy C Ladebue, Marina S McCreight, Emily C Lawrence, Taryn Oestreich, Anne C Lambert-Kerzner
OBJECTIVE: The Veterans Healthcare Administration (VHA) is adapting to meet the changing needs of our Veterans. VHA leaders are promoting quality improvement strategies including Lean Six Sigma (LSS). This study used LSS tools to evaluate the Veterans Choice Program (VCP), a program that aims to improve access to health care services for eligible Veterans by expanding health care options to non-VHA providers. RESEARCH DESIGN: LSS was utilized to assess the current process and efficiency patterns of the VCP at 3 VHA Medical Centers...
April 13, 2017: Medical Care
https://www.readbyqxmd.com/read/28396624/granulostasis-protein-quality-control-of-rnp-granules
#13
REVIEW
Simon Alberti, Daniel Mateju, Laura Mediani, Serena Carra
Ribonucleoprotein (RNP) granules transport, store, or degrade messenger RNAs, thereby indirectly regulating protein synthesis. Normally, RNP granules are highly dynamic compartments. However, because of aging or severe environmental stress, RNP granules, in particular stress granules (SGs), convert into solid, aggregate-like inclusions. There is increasing evidence that such RNA-protein inclusions are associated with several age-related neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS), fronto-temporal dementia (FTD) and Alzheimer's disease (AD)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28390990/selection-of-reference-genes-for-gene-expression-studies-in-heart-failure-for-left-and-right-ventricles
#14
Mengmeng Li, Man Rao, Kai Chen, Jianye Zhou, Jiangping Song
Real-time quantitative reverse transcriptase-PCR (qRT-PCR) is a feasible tool for determining gene expression profiles, but the accuracy and reliability of the results depends on the stable expression of selected housekeeping genes in different samples. By far, researches on stable housekeeping genes in human heart failure samples are rare. Moreover the effect of heart failure on the expression of housekeeping genes in right and left ventricles is yet to be studied. Therefore we aim to provide stable housekeeping genes for both ventricles in heart failure and normal heart samples...
April 5, 2017: Gene
https://www.readbyqxmd.com/read/28389692/familial-early-onset-paget-s-disease-of-bone-associated-with-a-novel-hnrnpa2b1-mutation
#15
Xuan Qi, Qianqian Pang, Jiawei Wang, Zhen Zhao, Ou Wang, Lijun Xu, Jiangfeng Mao, Yan Jiang, Mei Li, Xiaoping Xing, Wei Yu, Asan, Weibo Xia
Paget disease of bone (PDB) is a common metabolic bone disease characterized by increased bone resorption and disorganized bone formation which affect single or multiple sites of bones. Although the exact cause of PDB is still controversial, genetic factors are considered to play an important role in PDB. Several genes involved in the differentiation or function of osteoclast were shown to be associated with PDB or related syndrome such as SQSTM1, TNFRSF11A, TNFRSF11B, and ZNF687. Multisystem proteinopathy (MSP), a newly proposed syndrome including inclusion body myopathy (IBM), PDB, frontotemporal dementia (FTD), and amyotrophic lateral sclerosis (ALS), is mainly caused by mutation in VCP gene...
April 7, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28380318/recent-advances-in-the-molecular-genetics-of-frontotemporal-lobar-degeneration
#16
REVIEW
Innocenzo Rainero, E Rubino, A Michelerio, F D'Agata, Salvatore Gentile, Lorenzo Pinessi
The term frontotemporal lobar degeneration (FTLD) describes a spectrum of neurodegenerative disorders associated with deposition of misfolded proteins in the frontal and temporal lobes. Up to 40% of FTLD patients reports a family history of neurodegeneration, and approximately 1/3 of familial cases shows an autosomal dominant pattern of inheritance of the phenotype. Over the past two decades, several causative and susceptibility genes for FTLD have been discovered, supporting the notion that genetic factors are important contributors to the disease processes...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28360103/mutations-in-valosin-containing-protein-vcp-decrease-adp-atp-translocation-across-the-mitochondrial-membrane-and-impair-energy-metabolism-in-human-neurons
#17
Marthe Hr Ludtmann, Charles Arber, Fernando Bartolome, Macarena de Vicente, Elisavet Preza, Eva Carro, Henry Houlden, Sonia Gandhi, Selina Wray, Andrey Y Abramov
Mutations in the gene encoding valosin containing protein (VCP) lead to multisystem proteinopathies including frontotemporal dementia. We have previously shown that patient-derived VCP mutant fibroblasts exhibit lower mitochondrial membrane potential, uncoupled respiration, and reduced ATP levels. This study addresses the underlying basis for mitochondrial uncoupling using VCP knockdown neuroblastoma cell lines, induced pluripotent stem cells (iPSCs) and iPSC-derived cortical neurons from patients with pathogenic mutations in VCP...
March 30, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28357416/a-system-for-enzymatic-lysine-methylation-in-a-desired-sequence-context
#18
Vinay Kumar Aileni, Erna Davydova, Anders Moen, Pål Ø Falnes
A number of lysine-specific methyltransferases (KMTs) are responsible for the post-translational modification of cellular proteins on lysine residues. Most KMTs typically recognize specific motifs in unstructured, short peptide sequences. However, we have recently discovered a novel KMT that appeared to have a more relaxed sequence specificity, namely, valosin-containing protein (VCP)-KMT, which trimethylates Lys-315 in the molecular chaperone VCP. On the basis of this, here, we explored the possibility of using the VCP-KMT/VCP system to obtain specific lysine methylation of desired sequences grafted onto a VCP-derived scaffold...
February 28, 2017: ACS Omega
https://www.readbyqxmd.com/read/28341812/parkinson-s-disease-associated-receptor-gpr37-is-an-er-chaperone-for-lrp6
#19
Birgit S Berger, Sergio P Acebron, Jessica Herbst, Stefan Koch, Christof Niehrs
Wnt/β-catenin signaling plays a key role in embryonic development, stem cell biology, and neurogenesis. However, the mechanisms of Wnt signal transmission, notably how the receptors are regulated, remain incompletely understood. Here we describe that the Parkinson's disease-associated receptor GPR37 functions in the maturation of the N-terminal bulky β-propellers of the Wnt co-receptor LRP6. GPR37 is required for Wnt/β-catenin signaling and protects LRP6 from ER-associated degradation via CHIP (carboxyl terminus of Hsc70-interacting protein) and the ATPase VCP GPR37 is highly expressed in neural progenitor cells (NPCs) where it is required for Wnt-dependent neurogenesis...
May 2017: EMBO Reports
https://www.readbyqxmd.com/read/28322724/valosin-containing-protein-vcp-p97-inhibitors-relieve-mitofusin-dependent-mitochondrial-defects-due-to-vcp-disease-mutants
#20
Ting Zhang, Prashant Mishra, Bruce A Hay, David Chan, Ming Guo
Missense mutations of valosin-containing protein (VCP) cause an autosomal dominant disease known as inclusion body myopathy, Paget disease with frontotemporal dementia (IBMPFD) and other neurodegenerative disorders. The pathological mechanism of IBMPFD is not clear and there is no treatment. We show that endogenous VCP negatively regulates Mitofusin, which is required for outer mitochondrial membrane fusion. Because 90% of IBMPFD patients have myopathy, we generated an in vivo IBMPFD model in adult Drosophila muscle, which recapitulates disease pathologies...
March 21, 2017: ELife
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