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y box binding protein

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https://www.readbyqxmd.com/read/28419631/tgpl2-a-patatin-like-phospholipase-domain-containing-protein-is-involved-in-the-maintenance-of-apicoplast-lipids-homeostasis-in-toxoplasma
#1
Maude F Lévêque, Laurence Berry, Yoshiki Yamaryo-Botté, Hoa Mai Nguyen, Marine Galera, Cyrille Y Botté, Sébastien Besteiro
Patatin-like phospholipases are involved in numerous cellular functions, including lipid metabolism and membranes remodeling. The patatin-like catalytic domain, whose phospholipase activity relies on a serine-aspartate dyad and an anion binding box, is widely spread among prokaryotes and eukaryotes. We describe TgPL2, a novel patatin-like phospholipase domain-containing protein from the parasitic protist Toxoplasma gondii. TgPL2 is a large protein, in which the key motifs for enzymatic activity are conserved in the patatin-like domain...
April 17, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28415756/human-melanoma-cells-resistant-to-mapk-inhibitors-can-be-effectively-targeted-by-inhibition-of-the-p90-ribosomal-s6-kinase
#2
Corinna Kosnopfel, Tobias Sinnberg, Birgit Sauer, Heike Niessner, Anja Schmitt, Elena Makino, Andrea Forschner, Stephan Hailfinger, Claus Garbe, Birgit Schittek
The clinical availability of small molecule inhibitors specifically targeting mutated BRAF marked a significant breakthrough in melanoma therapy. Despite a dramatic anti-tumour activity and improved patient survival, rapidly emerging resistance, however, greatly limits the clinical benefit. The majority of the already described resistance mechanisms involve a reactivation of the MAPK signalling pathway. The p90 ribosomal S6 kinase (RSK), a downstream effector of the MAPK signalling cascade, has been reported to enhance survival of melanoma cells in response to chemotherapy...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28407375/h19-promotes-cholestatic-liver-fibrosis-by-preventing-zeb1-mediated-inhibition-of-epcam
#3
Yongfeng Song, Chune Liu, Xia Liu, Jocelyn Trottier, Michele Beaudoin, Li Zhang, Chad Pope, Guangyong Peng, Olivier Barbier, Xiaobo Zhong, Linheng Li, Li Wang
Based on our recent finding that disruption of bile acid (BA) homeostasis in mice results in the induction of hepatic lncRNA H19 expression, we sought to elucidate the role of H19 in cholestatic liver fibrosis. Hepatic overexpression of H19RNA augmented bile duct ligation (BDL)-induced liver fibrosis, which was accompanied by the elevation of serum ALT, AST, bilirubin, and BA levels. Multiple genes related to liver fibrosis, inflammation, and biliary hyperplasia were increased in H19-BDL vs Null-BDL mice, whereas genes in BA synthesis were decreased...
April 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28400280/transcriptional-activation-of-nanog-by-ybx1-promotes-lung-cancer-stem-like-properties-and-metastasis
#4
Tao Guo, Jing Kong, Yang Liu, Zhuoshi Li, Jianglong Xia, Yan Zhang, Shilei Zhao, Fengzhou Li, Jinxiu Li, Chundong Gu
Aberrant overexpression of the transcription/translation factor Y-box-binding protein-1 (YBX1) is associated with non-small cell lung cancer (NSCLC) aggressiveness. Cancer stem cells (CSCs) contribute to the tumorigenesis and metastasis of NSCLC. Hitherto, the mechanism by which YBX1 regulates cancer stem cells (CSCs) and metastasis in NSCLC remains unclear. Here, we demonstrated that YBX1 levels were elevated in NSCLC tissues and cell lines. Enforced expression of YBX1 promoted NSCLC cell invasion, sphere forming ability and ALDH1(+) population...
April 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28397066/microrna-9-promotes-the-proliferation-migration-and-invasion-of-breast-cancer-cells-via-down-regulating-foxo1
#5
D-Z Liu, B Chang, X-D Li, Q-H Zhang, Y-H Zou
PURPOSE: The objective of the study was to investigate the role of microRNA-9 (miR-9) targeting forkhead box O1 (FOXO1) in the proliferation, migration, and invasion of breast cancer cells. METHODS: Quantitative real-time polymerase chain reaction (qRT-PCR) was employed to determine the expressions of miR-9 and FOXO1 mRNA in breast cancer tissues, normal breast tissues, breast cancer cell lines, and normal breast epithelial cells. After the up-regulation of miR-9 expression, qRT-PCR and Western blotting were used to determine the expression of FOXO1...
April 10, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28389215/clock-gene-dysregulation-induced-by-chronic-er-stress-disrupts-%C3%AE-cell-function
#6
Yasuharu Ohta, Akihiko Taguchi, Takuro Matsumura, Hiroko Nakabayashi, Masaru Akiyama, Kaoru Yamamoto, Ruriko Fujimoto, Risa Suetomi, Akie Yanai, Koh Shinoda, Yukio Tanizawa
In Wfs1(-/-)A(y)/a islets, in association with endoplasmic reticulum (ER) stress, D-site-binding protein (Dbp) expression decreased and Nuclear Factor IL-3 (Nfil3)/E4 Promoter-binding protein 4 (E4bp4) expression increased, leading to reduced DBP transcriptional activity. Similar alterations were observed with chemically-induced ER stress. Transgenic mice expressing E4BP4 under the control of the mouse insulin I gene promoter (MIP), in which E4BP4 in β-cells is expected to compete with DBP for D-box, displayed remarkable glucose intolerance with severely impaired insulin secretion...
March 30, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28382490/silencing-of-y-box-binding-protein-1-by-rna-interference-inhibits-proliferation-invasion-and-metastasis-and-enhances-sensitivity-to-cisplatin-through-nf-%C3%AE%C2%BAb-signaling-pathway-in-human-neuroblastoma-sh-sy5y-cells
#7
Hong Wang, Ruowen Sun, Zuofei Chi, Shuang Li, Liangchun Hao
Y-box binding protein-1 (YB-1), a member of Y-box protein family binding DNA and RNA, has been proposed as a novel marker in multiple malignant tumors and found to be associated with tumor malignancy. Neuroblastoma is an embryonal tumor arising from neuroblast cells of the autonomic nervous system, which is the most common cancer diagnosed in infants. It has been reported that YB-1 is highly expressing in various human tumors including nasopharynx, thyroid, lung, breast, colon, ovary, and prostate cancers. This study aimed to investigate the functional role of YB-1 in neuroblastoma by silencing YB-1 using RNA interference (shRNA) in neuroblastoma SH-SY5Y cells...
April 5, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28373420/y-box-binding-protein-1-is-involved-in-regulating-the-g2-m-phase-of-the-cell-cycle
#8
Yojiro Kotake, Nagisa Arikawa, Keiichiro Tahara, Hiroaki Maru, Madoka Naemura
BACKGROUND/AIM: The transcription factor Y-box-binding protein 1 (YB1) is overexpressed in many types of human cancers. YB1 regulates the G1 phase of the cell cycle by controlling transcription of G1 regulators. Here, we report that YB1 is also involved in regulating G2/M phase. MATERIALS AND METHODS: YB1-depleted TKO cells were subjected to quantitative reverse transcription-polymerase chain reaction and cell-cycle analysis. RNA immunoprecipitation (RIP)-chip assay was performed using anti-YB1 antibodies...
April 2017: Anticancer Research
https://www.readbyqxmd.com/read/28373172/mouse-embryonic-dorsal-root-ganglia-contain-pluripotent-stem-cells-that-show-features-similar-to-es-cells-and-ips-cells
#9
Ryuhei Ogawa, Kyohei Fujita, Kazuo Ito
In the present study, we showed that the dorsal root ganglion (DRG) in the mouse embryo contains pluripotent stem cells (PSCs) that have developmental capacities equivalent to those of embryonic stem (ES) cells and induced pluripotent stem cells. Mouse embryonic DRG cells expressed pluripotency-related transcription factors (octamer-binding transcription factor 4, SRY (sex determining region Y)-box containing gene (Sox) 2, and Nanog) that play essential roles in maintaining the pluripotency of ES cells. Furthermore, the DRG cells differentiated into ectoderm-, mesoderm- and endoderm-derived cells...
April 3, 2017: Biology Open
https://www.readbyqxmd.com/read/28335789/sex-determining-region-y-box-protein-3-induces-epithelial-mesenchymal-transition-in-osteosarcoma-cells-via-transcriptional-activation-of-snail1
#10
Manle Qiu, Daoyun Chen, Chaoyong Shen, Ji Shen, Huakun Zhao, Yaohua He
BACKGROUND: The transcription factor sex-determining region Y-box protein 3 (SOX3) plays important roles in various types of cancer. However, its expression and function have not yet been elucidated in osteosarcoma (OS). METHODS: The expression levels of SOX3 in OS tissues and OS cell lines were determined by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot analysis. The effects of SOX3 expression on OS cell biological traits were investigated by overexpressing and downregulating SOX3 protein...
March 23, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28321397/the-identification-of-three-cancer-stem-cell-subpopulations-within-moderately-differentiated-lip-squamous-cell-carcinoma
#11
Rachna Ram, Helen D Brasch, Jonathan C Dunne, Paul F Davis, Swee T Tan, Tinte Itinteang
AIM: To identify and characterize cancer stem cells (CSCs) in moderately differentiated lip squamous cell carcinoma (MDLSCC). METHOD: MDLSCC samples underwent 3,3-diaminobenzidine (DAB) immunohistochemical (IHC) staining for squamous cell carcinoma marker EMA, CSC marker CD44 and embryonic stem cell markers NANOG, octamer-binding transcription factor 4 (OCT4), spalt-like transcription factor 4 (SALL4), sex-determining region Y-box 2 (SOX2), and phosphorylated signal transducer and activator of transcription 3 (pSTAT3)...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28302118/ybx1-gene-silencing-inhibits-migratory-and-invasive-potential-via-coro1c-in-breast-cancer-in-vitro
#12
Jia Pei Lim, Sukanya Shyamasundar, Jayantha Gunaratne, Olivia Jane Scully, Ken Matsumoto, Boon Huat Bay
BACKGROUND: Y-box binding protein-1 is an evolutionary conserved transcription and translation regulating protein that is overexpressed in various human malignancies, including breast cancer. Despite reports of YB-1 and its association with distant spread of breast cancer, the intrinsic mechanism underlying this observation remains elusive. This study investigates the role of YB-1 in mediating metastasis in highly invasive breast cancer cell lines. METHODS: Silencing the YBX1 gene (which encodes the YB-1 protein) by small interfering RNA (siRNA) was performed in MDA-MB-231 and Hs578T breast cancer cell lines, followed by phenotypic assays including cell migration and invasion assays...
March 16, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28270074/molecular-and-thermodynamic-studies-on-dna-triplex-formed-in-the-promoter-region-of-hmgb1-gene-as-a-selective-target-for-anticancer-drugs
#13
Neelam Lohani, Rajeswari Raja Moganty
HMGB1 (High Mobility Group Box-1) is a very versatile highly abundant architectural protein that plays multiple roles in human health and diseases. Under physiological condition it serves an amazing assortment of roles in different compartments of cell. The reported high expression of HMGB1 in almost all types of human cancers and inflammatory diseases make it a critical molecular therapeutic target. In the present study we have mobilized a proximal twenty one bp nucleotide (21RY) which is in the promoter region (-55 to-75) of hmgb1 gene and targeted it with triplex forming oligonucleotide (TFO) in combination with two widely used chemotherapeutic drugs actinomycin (ACT) and adriamycin (ADM)...
February 13, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28194325/serum-yb-1-y-box-binding-protein-1-as-a-biomarker-of-bone-disease-progression-in-patients-with-breast-cancer-and-bone-metastases
#14
A R Ferreira, M Bettencourt, I Alho, A L Costa, A R Sousa, A Mansinho, C Abreu, C Pulido, D Macedo, I Vendrell, T R Pacheco, L Costa, S Casimiro
YB-1 (Y-box binding protein 1) is a multifunctional cold-shock protein that has been implicated in all hallmarks of cancer. Elevated YB-1 protein level was associated with poor prognosis in several types of cancers, including breast cancer (BC), where it is a marker of decreased overall survival (OS) and distant metastasis-free survival across all subtypes. YB-1 is also secreted by different cell types and may act as an extracellular mitogen; however the pathological implications of the secreted form of YB-1 (sYB-1) are unknown...
March 2017: Journal of Bone Oncology
https://www.readbyqxmd.com/read/28185956/long-non-coding-rna-neat1-regulates-permeability-of-the-blood-tumor-barrier-via-mir-181d-5p-mediated-expression-changes-in-zo-1-occludin-and-claudin-5
#15
Junqing Guo, Heng Cai, Jun Ma, Xiaobai Liu, Yunhui Liu, Jian Zheng, Zhongyou Que, Wei Gong, Yana Gao, Wei Tao, Yixue Xue
The blood-tumor barrier (BTB) constitutes an efficient organization of tight junctions that limits the delivery of chemotherapeutic drugs to brain tumor tissues and impacts the treatment of glioma. Long non-coding RNAs (lncRNAs) are non-protein coding RNAs regulating gene expression, some lncRNAs play a crucial role in BTB permeability. However, the function of lncRNAs in BTB permeability is still largely unclear. Here, we have identified lncRNA nuclear paraspeckle assembly transcript 1 (NEAT1), was remarkably up-regulated in glioma endothelial cells (GECs) obtained from an in vitro BTB model...
February 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28181891/-chronic-traumatic-encephalopathy-an-old-acquaintance-in-athletes
#16
E G B Vijverberg, A C M Pijnenburg, P Scheltens, Y A L Pijnenburg
- Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease caused by repetitive head injuries like those seen in sports such as boxing, American football and soccer.- The clinical features of CTE are a range of cognitive, psychiatric and motor symptoms, and histopathology involves deposits of hyperphosphorylated tau protein and the presence of TAR DNA-binding protein (TDP-43) with relatively little beta-amyloid.- CTE is difficult to differentiate clinically from Alzheimer's disease, frontotemporal dementia and psychiatric disorders because of the major symptom overlap between these conditions...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28161363/molecular-determinants-of-cytochrome-c-oxidase-iv-mrna-axonal-trafficking
#17
Amar N Kar, Jose Norberto S Vargas, Cai-Yun Chen, Jeffrey A Kowalak, Anthony E Gioio, Barry B Kaplan
In previous studies, we identified a putative 38-nucleotide stem-loop structure (zipcode) in the 3' untranslated region of the cytochrome c oxidase subunit IV (COXIV) mRNA that was necessary and sufficient for the axonal localization of the message in primary superior cervical ganglion (SCG) neurons. However, little is known about the proteins that interact with the COXIV-zipcode and regulate the axonal trafficking and local translation of the COXIV message. To identify proteins involved in the axonal transport of the COXIV mRNA, we used the biotinylated 38-nucleotide COXIV RNA zipcode as bait in the affinity purification of COXIV zipcode binding proteins...
April 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28153731/positive-feedback-loop-of-yb-1-interacting-with-smad2-promotes-liver-fibrosis
#18
Panpan Xiong, Jun Zhang, Diannan Xu, Jie Zhu, Wenshuai Li, Jie Liu, Fei Liu
Y-box binding protein (YB-1), known as a multifunctional cellular protein in various biological processes, was recently reported to be associated with liver fibrosis. The critical role of TGF-β/Smad signaling pathway in stimulating the transcription of fibrotic genes in fibroblasts have already been identified, however, whether and how YB-1 modulated liver fibrosis via TGF-β/Smad signaling pathway remains largely unknown. In our previous study, we proved that ectopic TGF-β was associated with YB-1 expression...
March 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28151013/sex-determining-region-y-box-2-promotes-growth-of-lung-squamous-cell-carcinoma-and-directly-targets-cyclin-d1
#19
Chiguan Li, Bingwen He, Cuiping Huang, Huaping Yang, Liming Cao, Jun Huang, Chengping Hu
Sex-determining region Y-box 2 (SOX2) is an oncogene known to be amplified and overexpressed in various human malignancies, including lung squamous cell carcinoma (SCC). However, the role played by SOX2 in lung SCC development remains to be elucidated. We measured the levels of SOX2 and cyclin D1 mRNA and protein expression in lung SCC tissues and a lung SCC cell line, and found that both levels were dramatically upregulated in specimens of lung SCC tissue when compared with their expression levels in samples of adjacent nonneoplastic tissue...
April 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28123588/y-box-binding-protein-1-contributes-to-il-7-mediated-survival-signaling-in-b-cell-precursor-acute-lymphoblastic-leukemia
#20
Amina Kariminia, Sabine M Ivison, Vivian M Leung, Susanna Sung, Nicole Couto, Jacob Rozmus, Nina Rolf, Aru Narendran, Sandra E Dunn, Gregor S D Reid, Kirk R Schultz
Y-box-binding protein 1 (YB-1) is a regulatory protein that is associated with drug resistance and relapse in solid tumors. As YB-1 mediates some of its activity through growth factor receptor signaling dysregulation, the present study compared the expression of YB-1 and interleukin 7 (IL-7) receptor α (IL-7Rα) in pediatric B-cell precursor (BCP) acute lymphoblastic leukemia (ALL) and normal BCP cells. The expression levels of IL-7Rα and YB-1 were higher in relapsed vs. diagnostic samples of primary BCP ALL; however, co-expression was also observed in a minor BCP cell population in samples from healthy donors...
January 2017: Oncology Letters
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