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https://www.readbyqxmd.com/read/28871057/kh-type-splicing-regulatory-protein-is-a-new-component-of-chromatoid-body
#1
Huijuan Zhang, Guishuan Wang, Lin Liu, Xiaolin Liang, Yu Lin, Yi-Yu Lin, Chu-Fang Chou, Mo-Fang Liu, Hefeng Huang, Fei Sun
The chromatoid body (CB) is a specific cloud-like structure in the cytoplasm of haploid spermatids. Recent findings indicate that CB is identified as a male germ cell specific RNA storage and processing center, but its function has remained elusive for decades. In somatic cells, KH-type splicing regulatory protein (KSRP) is involved in regulating gene expression and maturation of select microRNAs (miRNAs). However, the function of KSRP in spermatogenesis remains unclear. In this study, we showed that KSRP partly localizes in CB, as a component of CB...
September 4, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28758620/antibodies-against-the-mono-methylated-arginine-glycine-repeat-mma-rg-of-the-epstein-barr-virus-nuclear-antigen-2-ebna2-identify-potential-cellular-proteins-targeted-in-viral-transformation
#2
Hiresh Ayoubian, Thomas Fröhlich, Dagmar Pogodski, Andrew Flatley, Elisabeth Kremmer, Aloys Schepers, Regina Feederle, Georg J Arnold, Friedrich A Grässer
The Epstein-Barr virus is a human herpes virus with oncogenic potential. The virus-encoded nuclear antigen 2 (EBNA2) is a key mediator of viral tumorigenesis. EBNA2 features an arginine-glycine (RG) repeat at amino acids (aa)339-354 that is essential for the transformation of lymphocytes and contains symmetrically (SDMA) and asymmetrically (ADMA) di-methylated arginine residues. The SDMA-modified EBNA2 binds the survival motor neuron protein (SMN), thus mimicking SMD3, a cellular SDMA-containing protein that interacts with SMN...
August 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28751441/miromics-and-proteomics-reveal-a-mir-296-3p-prkca-fak-ras-c-myc-feedback-loop-modulated-by-hdgf-ddx5-%C3%AE-catenin-complex-in-lung-adenocarcinoma
#3
Qiaofen Fu, Xin Song, Zhen Liu, Xiaojie Deng, Rongcheng Luo, Chunlei Ge, Ruilei Li, Zhen Li, Mengyang Zhao, YiYu Chen, Xian Lin, Qianbing Zhang, Weiyi Fang
This study was performed to identify the detailed mechanisms by which miR-296-3p functions as a tumor suppressor to prevent lung adenocarcinoma (LADC) cell growth, metastasis, and chemoresistance.<br /><br />Experimental Design: The miR-296-3p expression was examined by real-time PCR and in situ hybridization. MTT, EDU incorporation, Transwell assays, and MTT cytotoxicity were respectively performed for cell proliferation, metastasis, and chemoresistance, western blotting was performed to analyze the pathways by miR-296-3p and HDGF/DDX5 complex...
July 27, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28740544/interleukin-32%C3%AE-inhibits-endothelial-inflammation-vascular-smooth-muscle-cell-activation-and-atherosclerosis-by-upregulating-timp3-and-reck-through-suppressing-microrna-205-biogenesis
#4
Dong Ju Son, Yu Yeon Jung, Young Sik Seo, Heonyong Park, Dong Hun Lee, Sanghyeon Kim, Yoon-Seok Roh, Sang Bae Han, Do Young Yoon, Jin Tae Hong
Interleukin-32 (IL-32) is a multifaceted cytokine that promotes inflammation and regulates vascular endothelial cell behavior. Although some IL-32 isoforms have been reported to contribute to vascular inflammation and atherosclerosis, the functional role of IL-32α in vascular inflammation and atherogenesis has not been studied. Methods: IL-32α function was assessed in cells with transient IL-32α overexpression or treated with recombinant human IL-32α by western blotting and mRNA expression analysis. Vascular smooth muscle cell (VSMC) proliferation and migration was examined by BrdU incorporation and wound healing assays, respectively...
2017: Theranostics
https://www.readbyqxmd.com/read/28557706/downregulation-of-p68-rna-helicase-ddx5-activates-a-survival-pathway-involving-mtor-and-mdm2-signals
#5
M Kokolo, M Bach-Elias
The DEAD box p68 RNA helicase (DDX5) is required to manipulate RNA structures implicated in mRNA/rRNA processing and transcript export, and acts as a co-activator for a range of transcription factors. Previous research has indicated that p68 RNA helicase may also be important in tumour development. Wild-type HeLa and stable HeLa (clone 13) cell cultures containing RNAi-mediated depletion of p68 RNA helicase induced by doxycycline (DOX) were used to study how the p68 RNA helicase affects the mTOR cell signalling pathway...
2017: Folia Biologica (Praha)
https://www.readbyqxmd.com/read/28516729/proteome-analysis-of-duck-tembusu-virus-dtmuv-infected-bhk-21-cells
#6
Xin Sun, Shengyu Wang, Xian Lin, Lianzhong Zhao, Dan Zhang, Chenyang Yi, Xiaomei Sun, Huanchun Chen, Meilin Jin
Duck Tembusu virus (DTMUV) is a newly emerging pathogenic flavivirus that has caused huge economic losses to the duck industry in China since 2010. Moreover, the infection has spread rapidly, posing a potential public health concern. In this study, iTRAQ approach was firstly used to quantitatively identify differentially expressed cellular proteins in DTMUV-infected BHK-21 cells which are usually employed to produce veterinary vaccines for DTMUV, as well as other flaviviruses by serial passage. We identified 192 differentially expressed cellular proteins, including 11 upregulated and 8 downregulated proteins at 24 h postinfection (hpi), as well as 25 upregulated and 151 downregulated proteins at 48 hpi, of which TLR9, DDX3X, and DDX5 may play important roles in virus propagation...
May 17, 2017: Proteomics
https://www.readbyqxmd.com/read/28443473/proteomic-identification-of-potential-biomarkers-for-cervical-squamous-cell-carcinoma-and-human-papillomavirus-infection
#7
Song Qing, Wuniqiemu Tulake, Mingfang Ru, Xiaohong Li, Reziwanguli Yuemaier, Dilare Lidifu, Aierken Rouzibilali, Axiangu Hasimu, Yun Yang, Reziya Rouziahong, Halmurat Upur, Abulizi Abudula
It is known that high-risk human papillomavirus infection is the main etiological factor in cervical carcinogenesis. However, human papillomavirus screening is not sufficient for early diagnosis. In this study, we aimed to identify potential biomarkers common to cervical carcinoma and human papillomavirus infection by proteomics for human papillomavirus-based early diagnosis and prognosis. To this end, we collected 76 cases of fresh cervical tissues and 116 cases of paraffin-embedded tissue slices, diagnosed as cervical squamous cell carcinoma, cervical intraepithelial neoplasia II-III, or normal cervix from ethnic Uighur and Han women...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28424484/the-tandem-agenet-domain-of-fragile-x-mental-retardation-protein-interacts-with-fus
#8
Qingzhong He, Wei Ge
The tandem Agenet domain (TAD) of fragile X mental retardation protein (FMRP) protein is considered to be a member of the methyl-lysine-binding Tudor domain "Royal family". Several groups have reported that the TAD binds with methylated histones and plays a role in DNA damage responses. FMRP is a RNA-binding protein predominantly resident in cytoplasm. Therefore, in this study, we identified DDX5, FUS, EWSR1 and LSM14A as TAD-interacting proteins sensitive to F32L and/or Y96L mutation by pull-down assays and mass spectrometry...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28411202/characterization-of-the-mammalian-dead-box-protein-ddx5-reveals-functional-conservation-with-s-cerevisiae-ortholog-dbp2-in-transcriptional-control-and-glucose-metabolism
#9
COMPARATIVE STUDY
Zheng Xing, Siwen Wang, Elizabeth J Tran
DEAD-box proteins are a class of nonprocessive RNA helicases that dynamically modulate the structure of RNA and ribonucleoprotein complexes (RNPs). However, the precise roles of individual members are not well understood. Work from our laboratory revealed that the DEAD-box protein Dbp2 in Saccharomyces cerevisiae is an active RNA helicase in vitro that functions in transcription by promoting mRNP assembly, repressing cryptic transcription initiation, and regulating long noncoding RNA activity. Interestingly, Dbp2 is also linked to glucose sensing and hexose transporter gene expression...
July 2017: RNA
https://www.readbyqxmd.com/read/28388433/rna-helicase-ddx5-inhibits-reprogramming-to-pluripotency-by-mirna-based-repression-of-rybp-and-its-prc1-dependent-and-independent-functions
#10
Huanhuan Li, Ping Lai, Jinping Jia, Yawei Song, Qing Xia, Kaimeng Huang, Na He, Wangfang Ping, Jiayu Chen, Zhongzhou Yang, Jiao Li, Mingze Yao, Xiaotao Dong, Jicheng Zhao, Chunhui Hou, Miguel A Esteban, Shaorong Gao, Duanqing Pei, Andrew P Hutchins, Hongjie Yao
No abstract text is available yet for this article.
April 6, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28388421/dead-box-rna-binding-protein-ddx5-not-a-black-box-during-reprogramming
#11
COMMENT
Christian M Nefzger, Jose M Polo
The role of RNA binding proteins (RBPs) during nuclear reprogramming is poorly characterized. In this issue of Cell Stem Cell,Li et al. (2017) show that DEAD-box RBP DDX5 acts as a reprogramming roadblock and give important mechanistic insights into the establishment of pluripotency by characterizing the intricate downstream events.
April 6, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28270142/dynamic-proteomics-reveals-bimodal-protein-dynamics-of-cancer-cells-in-response-to-hsp90-inhibitor
#12
Anat Zimmer, Shlomit Amar-Farkash, Tamar Danon, Uri Alon
BACKGROUND: Drugs often kill some cancer cells while others survive. This stochastic outcome is seen even in clonal cells grown under the same conditions. Understanding the molecular reasons for this stochastic outcome is a current challenge, which requires studying the proteome at the single cell level over time. In a previous study we used dynamic proteomics to study the response of cancer cells to a DNA damaging drug, camptothecin. Several proteins showed bimodal dynamics: they rose in some cells and decreased in others, in a way that correlated with eventual cell fate: death or survival...
March 7, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28244855/knockdown-of-ddx5-inhibits-the-proliferation-and-tumorigenesis-in-esophageal-cancer
#13
Zhenchuan Ma, Jie Feng, Yurui Guo, Ranran Kong, Yuefeng Ma, Liangzhang Sun, Xiaoping Yang, Bin Zhou, Shaomin Li, Wei Zhang, Jiantao Jiang, Jin Zhang, Zhe Qiao, Yao Cheng, Danjie Zha, Shiyuan Liu
DEAD (Asp-Glu-Ala-Asp) box protein 5 (DDX5), a prototypical member of the DEAD/H-box protein family, has been involved in several human malignancies. However, the expression and biological role of DDX5 in esophageal cancer (EC) remain largely unknown. In this study, we examined the role of DDX5 in regulating EC cell proliferation and tumorigenesis and explored its possible molecular mechanism. We found that DDX5 was overexpressed in human EC cell lines. In addition, knockdown of DDX5 significantly inhibited the proliferation of EC cells in vitro and the growth of EC xenografts in vivo...
July 5, 2017: Oncology Research
https://www.readbyqxmd.com/read/28216662/ddx5-promotes-gastric-cancer-cell-proliferation-in-vitro-and-in-vivo-through-mtor-signaling-pathway
#14
Cheng Du, Dan-Qi Li, Na Li, Li Chen, Shi-Sen Li, Yang Yang, Ming-Xiao Hou, Man-Jiang Xie, Zhen-Dong Zheng
DEAD (Asp-Glu-Ala-Asp) box helicase 5 (DDX5) is an ATP-dependent RNA helicase that is overexpressed in various malignancies. Increasing evidence suggests that DDX5 participates in carcinogenesis and cancer progression via promoting cell proliferation and metastasis. However, the functional role of DDX5 in gastric cancer is largely unknown. In this study, we observed that DDX5 was significantly up-regulated in gastric cancer tissues compared with the paired adjacent normal tissues. The expression of DDX5 correlated strongly with Ki67 index and pathological stage of gastric cancer...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28111200/rna-helicase-ddx5-inhibits-reprogramming-to-pluripotency-by-mirna-based-repression-of-rybp-and-its-prc1-dependent-and-independent-functions
#15
Huanhuan Li, Ping Lai, Jinping Jia, Yawei Song, Qing Xia, Kaimeng Huang, Na He, Wangfang Ping, Jiayu Chen, Zhongzhou Yang, Jiao Li, Mingze Yao, Xiaotao Dong, Jicheng Zhao, Chunhui Hou, Miguel A Esteban, Shaorong Gao, Duanqing Pei, Andrew P Hutchins, Hongjie Yao
RNA-binding proteins (RBPs), in addition to their functions in cellular homeostasis, play important roles in lineage specification and maintaining cellular identity. Despite their diverse and essential functions, which touch on nearly all aspects of RNA metabolism, the roles of RBPs in somatic cell reprogramming are poorly understood. Here we show that the DEAD-box RBP DDX5 inhibits reprogramming by repressing the expression and function of the non-canonical polycomb complex 1 (PRC1) subunit RYBP. Disrupting Ddx5 expression improves the efficiency of iPSC generation and impedes processing of miR-125b, leading to Rybp upregulation and suppression of lineage-specific genes via RYBP-dependent ubiquitination of H2AK119...
April 6, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28093458/single-cell-gene-expression-analysis-reveals-diversity-among-human-spermatogonia
#16
N Neuhaus, J Yoon, N Terwort, S Kliesch, J Seggewiss, A Huge, R Voss, S Schlatt, R V Grindberg, H R Schöler
STUDY QUESTION: Is the molecular profile of human spermatogonia homogeneous or heterogeneous when analysed at the single-cell level? SUMMARY ANSWER: Heterogeneous expression profiles may be a key characteristic of human spermatogonia, supporting the existence of a heterogeneous stem cell population. WHAT IS KNOWN ALREADY: Despite the fact that many studies have sought to identify specific markers for human spermatogonia, the molecular fingerprint of these cells remains hitherto unknown...
February 10, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28060337/using-rna-sequencing-to-detect-novel-splice-variants-related-to-drug-resistance-in-in-vitro-cancer-models
#17
Rocco Sciarrillo, Anna Wojtuszkiewicz, Irsan E Kooi, Valentina E Gómez, Ugo Boggi, Gerrit Jansen, Gert-Jan Kaspers, Jacqueline Cloos, Elisa Giovannetti
Drug resistance remains a major problem in the treatment of cancer for both hematological malignancies and solid tumors. Intrinsic or acquired resistance can be caused by a range of mechanisms, including increased drug elimination, decreased drug uptake, drug inactivation and alterations of drug targets. Recent data showed that other than by well-known genetic (mutation, amplification) and epigenetic (DNA hypermethylation, histone post-translational modification) modifications, drug resistance mechanisms might also be regulated by splicing aberrations...
December 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27889881/identification-of-reference-genes-and-mirnas-for-qrt-pcr-in-human-esophageal-squamous-cell-carcinoma
#18
Li Chen, Yulin Jin, Lin Wang, Fenghao Sun, Xiaodong Yang, Mengkun Shi, Cheng Zhan, Yu Shi, Qun Wang
It is important to select an appropriate reference gene and miRNA when using quantitative real-time polymerase chain reaction (qRT-PCR) to analyze gene and miRNA expression. However, many commonly used reference genes and miRNAs are not stably expressed and therefore not suitable for normalization or quantification of qRT-PCR data. This study aims to identify appropriate reference genes and miRNAs for use in human esophageal squamous carcinoma qRT-PCR analysis. Using data provided by The Cancer Genome Atlas, we identified DDX5, LAPTM4A, P4HB, RHOA, miR-28-5p, miR-34a-5p, and miR-186-5p as candidate reference genes and miRNAs...
January 2017: Medical Oncology
https://www.readbyqxmd.com/read/27338022/rna-helicase-dead-box-protein-5-regulates-polycomb-repressive-complex-2-hox-transcript-antisense-intergenic-rna-function-in-hepatitis-b-virus-infection-and-hepatocarcinogenesis
#19
Hao Zhang, Zheng Xing, Saravana Kumar Kailasam Mani, Brigitte Bancel, David Durantel, Fabien Zoulim, Elizabeth J Tran, Philippe Merle, Ourania Andrisani
UNLABELLED: Chronic hepatitis B virus (HBV) infection is a major factor in hepatocellular carcinoma (HCC) pathogenesis by a mechanism not yet understood. Elucidating mechanisms of HBV-mediated hepatocarcinogenesis is needed to gain insights into classification and treatment of HCC. In HBV replicating cells, including virus-associated HCCs, suppressor of zeste 12 homolog (SUZ12), a core subunit of Polycomb repressive complex2 (PRC2), undergoes proteasomal degradation. This process requires the long noncoding RNA, Hox transcript antisense intergenic RNA (HOTAIR)...
October 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27192872/-ddx5-is-a-novel-targeting-protein-of-tumor-suppressor-arf
#20
REVIEW
Kenji Tago, Megumi Funakoshi-Tago
No abstract text is available yet for this article.
April 2016: Seikagaku. the Journal of Japanese Biochemical Society
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