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https://www.readbyqxmd.com/read/29429449/investigation-of-function-and-regulation-of-the-yb-1-cellular-factor-in-hiv-replication
#1
Yu-Mi Jung, Kyung-Lee Yu, Seong-Hyun Park, Seong-Deok Lee, Min-Jeong Kim, Ji-Chang You
Y-box binding protein 1 (YB-1) is a member of the cold-shock domain (CSD) protein superfamily. It participates in a wide variety of cellular events, including transcription, RNA splicing, translation, DNA repair, drug resistance, and stress responses. We investigated putative functions of YB-1 in HIV-1 replication. Functional studies using overexpression or knockdown of YB-1 in conjunction with transfection of proviral DNA showed that YB-1 enhances virus production. We found YB-1 regulates HIV-1 production by stimulating viral transcription using HIV-1 LTR sequence U3RU5 with Luciferase assay...
February 12, 2018: BMB Reports
https://www.readbyqxmd.com/read/29353823/increased-expression-of-y-box-binding-protein-1-in-hind-limb-muscles-during-regeneration-from-ischemic-injury-in-mice
#2
Megumi Fuke, Makoto Narita, Yuko Wada, Tatsuichiro Seto, Kenji Okada, Jun Nakayama, Hiroto Izumi, Ken-Ichi Ito
Critical limb ischemia (CLI) is the most severe complication of peripheral arterial disease (PAD). Understanding the molecular mechanisms underlying tissue repair after CLI is necessary for preventing PAD progression. Y-box binding protein-1 (YB-1) regulates the expression of many genes in response to environmental stresses. We aimed to determine whether YB-1 is involved in ischemic muscle regeneration. A mouse ischemic hind-limb model was generated; namely, the femoral, saphenous, and popliteal arteries in the left hind limb were ligated...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29320405/effect-of-shrna-mediated-silencing-of-yb-1-protein-on-the-expression-of-matrix-collagenases-in-malignant-melanoma-cell-in-vitro
#3
Wisam Nabeel Ibrahim, Abd Almonem Doolaanea, Mohammad Syaiful Bahari Bin Abdull Rasad
Background and Objective: YB-1 is a transcription and oncogenic factor capable of binding to DNA and RNA performing versatile functions within normal and cancer cells. Some studies reported the binding of YB-1 with a collagenases gene promoter and influencing their expression. In addition, the role of YB-1 in malignant melanoma was not elucidated. Thus, in this study, the aim was to knock down the expression of YB-1 in A375 malignant melanoma cancer cell using the shRNA approach and study its effect on cancer cell proliferation, migration, and expression of collagenases...
January 10, 2018: Cells
https://www.readbyqxmd.com/read/29277610/the-transcriptional-factor-yb-1-positively-regulates-hsc70-transcription-in-crassostrea-hongkongensis
#4
Huiru Liu, Delin Xu, Miao Cui, Tinglong Hou, Qizhong Zhang
A Y-box binding protein ChYB-1 was discovered as a ChHsc70 promoter-associated protein in Crassostrea hongkongensis by DNA-affinity purification and mass spectrometry analysis. The overexpression of ChYB-1 in heterologous HEK293T cells led to clear enhancement of ChHsc70 promoter expression, while ChYB-1 depletion correlated with significant reduction of ChHsc70 transcription in the hemocytes of C. hongkongensis. Quantitative Real-time PCR analysis revealed that both ChHsc70 and ChYB-1 were transcriptionally responsive to external chemical or physical stressors...
December 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29274785/indirubin-3-oxime-inhibits-anticancer-agent-induced-yb-1-nuclear-translocation-in-hepg2-human-hepatocellular-carcinoma-cells
#5
Toru Tanaka, Sachiyo Ohashi, Hiroaki Saito, Taira Wada, Tadashi Aoyama, Yoshimi Ichimaru, Shinichi Miyairi, Shunsuke Kobayashi
Hepatocellular carcinoma (HCC) is a disease with poor prognosis. Nuclear accumulation of YB-1 is closely related to the malignancy of HCC. Treatment with anticancer agents often induces translocation of YB-1 from cytoplasm to nucleus and activates the expression of multidrug resistance gene 1 (MDR1). Therefore, any effective inhibitor of this phenomenon would be useful for cancer treatment. Here we examined various indirubin derivatives and found that indirubin 3'-oxime inhibits actinomycin D-induced nuclear transport of YB-1 and suppresses the activation of MDR1 gene expression in the human hepatocellular carcinoma cell line HepG2...
December 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29246296/antisense-oligonucleotides-targeting-y-box-binding-protein-1-inhibit-tumor-angiogenesis-by-downregulating-bcl-xl-vegfr2-tie-axes
#6
Kiyoko Setoguchi, Lin Cui, Nobutaka Hachisuka, Sumalee Obchoei, Kentaro Shinkai, Fuminori Hyodo, Kiyoko Kato, Fumito Wada, Tsuyoshi Yamamoto, Mariko Harada-Shiba, Satoshi Obika, Kenji Nakano
Y-box binding protein-1 (YB-1), involved in cancer progression and chemoradiation resistance, is overexpressed in not only cancer cells but also tumor blood vessels. In this study, we investigated the potential value of amido-bridged nucleic acid (AmNA)-modified antisense oligonucleotides (ASOs) targeting YB-1 (YB-1 ASOA) as an antiangiogenic cancer therapy. YB-1 ASOA was superior to natural DNA-based ASO or locked nucleic acid (LNA)-modified YB-1 ASO in both knockdown efficiency and safety, the latter assessed by liver function...
December 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/29187452/y-box-binding-protein-1-enhances-oncogenic-transforming-growth-factor-%C3%AE-signaling-in-breast-cancer-cells-via-triggering-phospho-activation-of-smad2
#7
Matthias B Stope, Martin Weiss, Dominique Koensgen, Simone L Popp, Christian Joffroy, Alexander Mustea, Miriam B Buck, Cornelius Knabbe
BACKGROUND/AIM: Transforming growth factor β (TGFβ) plays a role in diverse oncogenic pathways including cell proliferation and cell motility and is regulated by the pleiotropic factor Y-box binding protein-1 (YB-1). In breast cancer, Sma/Mad related protein 2 (Smad2) represents the most common downstream transducer in TGFβ signaling. MATERIALS AND METHODS: Here, YB-1's impact on Smad2 phospho-activation was characterized by incubation of the breast cancer cell line MCF-7 with or without TGFβ1 in the absence or presence of overexpressed YB-1 protein...
December 2017: Anticancer Research
https://www.readbyqxmd.com/read/29133115/structural-features-of-the-interaction-of-the-3-untranslated-region-of-mrna-containing-exosomal-rna-specific-motifs-with-yb-1-a-potential-mediator-of-mrna-sorting
#8
Darya D Yanshina, Olga A Kossinova, Alexander V Gopanenko, Olga A Krasheninina, Alexey A Malygin, Alia G Ven'yaminova, Galina G Karpova
We have previously shown that YB-1 is the only protein of the HEK293 cell cytoplasmic (S100) extract that specifically interacts with RNA hairpins each containing one of the motifs ACCAGCCU (1), CAGUGAGC (2) and UAAUCCCA (3), which had been identified as often found in exosomal RNA and proposed as potential cis-acting elements targeting RNAs into exosomes. Here we explored the interactions of YB-1 with a fragment of the 3'-untranslated region (UTR) of septin 14 mRNA (SEPT14 RNA), which contains all three motifs...
November 10, 2017: Biochimie
https://www.readbyqxmd.com/read/29126263/notch-signaling-regulates-differentiation-and-steroidogenesis-in-female-mouse-ovarian-granulosa-cells
#9
Rexxi D Prasasya, Kelly E Mayo
The Notch pathway is a highly conserved juxtacrine signaling mechanism that is important for many cellular processes during development, including differentiation and proliferation. While Notch is important during ovarian follicle formation and early development, its functions during the gonadotropin-dependent stages of follicle development are largely unexplored. We observed positive regulation of Notch activity and expression of Notch ligands and receptors following activation of the LH-receptor in prepubertal mouse ovary...
November 8, 2017: Endocrinology
https://www.readbyqxmd.com/read/29119395/comparative-analysis-of-quantitative-parameters-of-expression-of-the-retinoic-acid-nuclear-receptor-rar%C3%AE-gene-and-ape1-yb-1-mdr1-pattern-genes-in-patients-with-newly-detected-multiple-myeloma
#10
N N Kalitin, Yu B Chernykh, I V Buravtsova
The expression of retinoic acid nuclear receptor gene RARα and its relationship with expression of APE1, YB-1, and MDR1 genes was studied in bone marrow aspiration biopsy specimens from 22 patients with newly detected multiple myeloma. The expression of RARα directly correlated with the expression of APE1/YB-1/MDR1 pattern genes. Groups differing by expression of RARα exhibited significant differences in the overall survival of patients; concordant and simultaneous changes in the expression of all genes of the APE1/YB-1/MDR1 pattern suggested the level of RARα gene expression as a potential prognostic factor in the pathogenesis of multiple myeloma...
November 9, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29113949/dysregulated-expression-of-the-microrna-mir-137-and-its-target-yb-1-contribute-to-the-invasive-characteristics-of-malignant-pleural-mesothelioma
#11
Thomas G Johnson, Karin Schelch, Yuen Y Cheng, Marissa Williams, Kadir H Sarun, Michaela B Kirschner, Steven Kao, Anthony Linton, Sonja Klebe, Brian C McCaughan, Ruby Cy Lin, Christine Pirker, Walter Berger, Annette Lasham, Nico van Zandwijk, Glen Reid
BACKGROUND: Malignant pleural mesothelioma (MPM) is an aggressive malignancy linked to asbestos exposure. On a genomic level, MPM is characterised by frequent chromosomal deletions of tumour suppressors, including microRNAs. MiR-137 plays a tumour suppressor role in other cancers, so the aim of this study was to characterise it and its target Y-box binding protein-1 (YB-1) in MPM. BASIC PROCEDURES: Expression, methylation and copy number status of miR-137 and its host gene MIR137HG were assessed by PCR...
November 4, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28964869/anti-proliferative-and-pro-apoptotic-effects-of-uncaria-tomentosa-aqueous-extract-in-squamous-carcinoma-cells
#12
Francesca Ciani, Simona Tafuri, Annaelena Troiano, Alessio Cimmino, Bianca Saveria Fioretto, Andrea Maria Guarino, Alessandra Pollice, Maria Vivo, Antonio Evidente, Domenico Carotenuto, Viola Calabrò
Uncaria tomentosa (Willd.) DC. (Rubiacee), also known as uña de gato, is a plant that grows wild in the upper Amazon region of Peru and has been widely used in folk medicine to treat several health conditions including cancer. We have produced an aqueous extract from Uncaria tomentosa (UT-ex) and analyzed its effects on squamous carcinoma cells and immortalized HaCaT keratinocytes. Squamous cell carcinoma (SCC) is an uncontrolled growth of abnormal cells arising in the skin's squamous layer of epidermis. When detected at an early stage, SCCs are almost curable, however, if left untreated, they can penetrate the underlying tissue and become disfiguring...
September 28, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28928774/y-box-protein-1-regulates-the-expression-of-collagen-i-in-hepatic-progenitor-cells-via-pdgfr-%C3%AE-erk-p90rsk-signalling
#13
Fei Li, Zhenzeng Ma, Heng Liu, Qidi Zhang, Xiaobo Cai, Ying Qu, Mingyi Xu, Lungen Lu
Y-box protein-1 (YB-1) is a highly conserved transcription factor that is involved in multiple biological processes via transcriptional regulation of several genes, including p53, cyclin D1, and EGFR. YB-1 has been reported to be overexpressed in injured livers. This study aims to explore the functions of YB-1 in hepatic progenitor cells (HPCs). Herein, chromatin immunoprecipitation sequencing (ChIP-sequencing) and RNA-sequencing assays identified that YB-1 participated in the biological adhesion process and ECM-receptor interactions in HPCs...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28916481/identification-of-2-4-dihydroxy-5-pyrimidinyl-imidothiocarbomate-as-a-novel-inhibitor-to-y-box-binding-protein-1-yb-1-and-its-therapeutic-actions-against-breast-cancer
#14
Vinoth Prasanna Gunasekaran, Kumari Nishi, Dakshinamurthy Sivakumar, Thirunavukkarasu Sivaraman, Ganeshan Mathan
In spite of advances in breast cancer treatment and early diagnosis, drug toxicity, cancer relapse, multidrug resistance and metastasis are the major impediment to the developments of efficient drugs. However, unique druggable targets of cancer cells distinct from the normal cells provide new rationale in cancer treatment. Previous reports clearly emphasize the differential expression and localization of Y box binding protein-1 (YB-1) between normal breast tissues and different stages of breast cancer. Y box binding protein-1 is DNA as well as RNA binding protein involved in transcription and translation regulation of various proteins involved in cancer progression, apoptosis, cell cycle, epithelial to mesenchymal transition (EMT) and drug resistance...
September 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28903448/positive-expression-of-y-box-binding-protein-1-and-prognosis-in-non-small-cell-lung-cancer-a-meta-analysis
#15
REVIEW
Liang Jiang, Gao-Le Yuan, Qi-Lian Liang, Hui-Jie Zhang, Jie Huang, Shao-Ang Cheng, Xiao-Xia Peng
BACKGROUND: Y-box binding protein 1 (YB-1) belongs to the cold shock domain protein family involved in transcription and translation. We conducted a meta-analysis of the association between YB-1 expression and the survival and clinicopathological features in NSCLC. METHODS: PubMed and Embase were searched to identify studies that evaluated the YB-1 expression (by immunohistochemistry) and overall survival (OS) in NSCLC. Hazard ratios (HRs) and 95% confidence intervals (CI) of OS were pooled...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28855207/shrimp-mir-s8-suppresses-the-stemness-of-human-melanoma-stem-like-cells-by-targeting-the-transcription-factor-yb-1
#16
Fan Yang, Jun Wei, Song Zhang, Xiaobo Zhang
Cross-species regulation of gene expression by microRNA is a possible untapped opportunity for miRNA-based therapy. In this study, we report a novel approach to ablate melanoma stem-like cells by targeting the transcription factor YB-1, which is significantly and selectively upregulated in these cells in melanoma. Silencing YB-1 expression was sufficient to significantly inhibit the stemness of melanoma stem-like cells. In exploring YB-1 targeting, we discovered that the shrimp microRNA miR-S8 could suppress human YB-1 expression in melanoma stem-like cells...
October 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28819388/role-of-y-box-protein-1-in-cancer-as-potential-biomarker-and-novel-therapeutic-target
#17
REVIEW
Pramod Kumar Maurya, Alok Mishra, Birendra Singh Yadav, Swati Singh, Prashant Kumar, Amit Chaudhary, Shweta Srivastava, Suriya Narayan Murugesan, Ashutosh Mani
The Y-box binding protein (YB-1) is known to be a multifunctional transcription and translation factor during expression of several proteins. It is a vital oncoprotein that regulates cancer cell progression and proliferation. YB-1 is over-expressed in various human cancers such as breast cancer, colon cancer, lung cancer, gastric cancer, oesophageal cancer and glioblastoma. Nuclear expression of YB-1 is found to be associated with multidrug resistance and cancer cell progression. YB-1 is reported to regulate many cellular signalling pathways in different types of cancer proliferation...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28782557/yb-1-expression-promotes-pancreatic-cancer-metastasis-that-is-inhibited-by-microrna-216a
#18
Jingjing Lu, Xiaohong Li, Fei Wang, Yibing Guo, Yan Huang, Hui Zhu, Yao Wang, Yuhua Lu, Zhiwei Wang
Pancreatic cancer is one of the most aggressive cancers. The vast majority of patients are diagnosed with advanced, unresectable disease because of early invasive growth and metastatic spread. The aim of this study was to examine YB-1 expression in pancreatic cancer and determine its effects on cell invasion. YB-1 is overexpressed in pancreatic cancer cell lines and patient tissue samples. In patient tissues, high YB-1 levels correlated with perineural invasion. Silencing of YB-1 significantly reduced cell invasion with decreased expression of MMPs in vitro...
October 15, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28740723/at-the-interface-of-three-nucleic-acids-the-role-of-rna-binding-proteins-and-poly-adp-ribose-in-dna-repair
#19
E E Alemasova, O I Lavrik
RNA-binding proteins (RBPs) regulate RNA metabolism, from synthesis to decay. When bound to RNA, RBPs act as guardians of the genome integrity at different levels, from DNA damage prevention to the post-transcriptional regulation of gene expression. Recently, RBPs have been shown to participate in DNA repair. This fact is of special interest as DNA repair pathways do not generally involve RNA. DNA damage in higher organisms triggers the formation of the RNA-like polymer - poly(ADP-ribose) (PAR). Nucleic acid-like properties allow PAR to recruit DNA- and RNA-binding proteins to the site of DNA damage...
April 2017: Acta Naturae
https://www.readbyqxmd.com/read/28714514/nuclear-expression-of-y-box-binding-1-is-important-for-resistance-to-chemotherapy-including-gemcitabine-in-tp53-mutated-bladder-cancer
#20
Takahisa Yamashita, Morihiro Higashi, Shuji Momose, Makoto Morozumi, Jun-Ichi Tamaru
The development and acquisition of multiple drug resistance in cancer cells remain a major obstacle in the treatment of bladder cancer. Nuclear translocation of Y box binding-1 (YB-1), which is a member of a family of DNA-binding proteins that contain a cold shock domain, plays a significant role in the acquisition of drug resistance by upregulating expression of the multidrug resistance-1 (MDR-1) gene product, p-glycoprotein. The tumor suppressor protein p53 is thought to be essential for nuclear translocation of YB-1...
August 2017: International Journal of Oncology
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