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CtBP2

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https://www.readbyqxmd.com/read/29026198/ctbp2-mediated-%C3%AE-catenin-regulation-is-required-for-exit-from-pluripotency
#1
Tae Wan Kim, Sojung Kwak, Jihoon Shin, Byung-Hee Kang, Sang-Eun Lee, Min Young Suh, Jae-Hwan Kim, In-Young Hwang, Jong-Hyuk Lee, Jinmi Choi, Eun-Jung Cho, Hong-Duk Youn
The canonical Wnt pathway is critical for embryonic stem cell (ESC) pluripotency and aberrant control of β-catenin leads to failure of exit from pluripotency and lineage commitments. Hence, maintaining the appropriate level of β-catenin is important for the decision to commit to the appropriate lineage. However, how β-catenin links to core transcription factors in ESCs remains elusive. C-terminal-binding protein (CtBP) in Drosophila is essential for Wnt-mediated target gene expression. In addition, Ctbp acts as an antagonist of β-catenin/TCF activation in mammals...
October 13, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28677795/ctbp2-is-associated-with-angiogenesis-and-regulates-the-apoptosis-of-prostate-cancer-cells
#2
Qiang Xuan, Xiaoge Zhong, Weidong Li, Zengnan Mo, Yuanjie Huang, Yanling Hu
Angiogenesis is associated with prostate cancer (PCa) development and progression. Aberrant expression of C-terminal binding protein (CtBP)2 has been observed in PCa, but whether its change in expression plays a significant role in angiogenesis has not been completely characterized. we attempted to integrate and analyze the genome-wide association study (GWAS) of follicle stimulating hormone receptor (FSHR) and CtBP2, the Cancer Genome Atlas (TCGA) data and CtBP2 binding data in CistromeMap (18) to explore the mechanism of CtBP2 in PCa, and performed pathway enrichment analysis...
June 28, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28576729/afferent-synaptogenesis-between-ectopic-hair-cell-like-cells-and-neurites-of-spiral-ganglion-induced-by-atoh1-in-mammals-in-vitro
#3
Wen-Wei Luo, Rui Ma, Xiang Cheng, Xiao-Yu Yang, Zhao Han, Dong-Dong Ren, Ping Chen, Fang-Lu Chi, Juan-Mei Yang
Newly formed ectopic hair-cell-like cells (EHCLCs) induced by overexpression of atonal homolog 1 (Atoh1) in vitro were found to possess features of endogenous hair cells (HCs) in previous reports and in the present study. However, limited information is available regarding whether EHCLCs and native spiral ganglion neurons (SGNs) form afferent synapses, which are important for the restoration of hearing. In the current study, we focused on the afferent synaptogenesis between EHCLCs and SGN-derived dendrites...
May 31, 2017: Neuroscience
https://www.readbyqxmd.com/read/28438897/downregulation-of-mir-200a-3p-targeting-ctbp2-complex-is-involved-in-the-hypoproduction-of-il-2-in-systemic-lupus-erythematosus-derived-t-cells
#4
Eri Katsuyama, Minglu Yan, Katsue Sunahori Watanabe, Syun Matsushima, Yuriko Yamamura, Sumie Hiramatsu, Keiji Ohashi, Haruki Watanabe, Takayuki Katsuyama, Sonia Zeggar, Nobuya Yoshida, Vaishali R Moulton, George C Tsokos, Ken-Ei Sada, Jun Wada
Systemic lupus erythematosus (SLE) damages multiple organs by producing various autoantibodies. In this study, we report that decreased microRNA (miR)-200a-3p causes IL-2 hypoproduction through zinc finger E-box binding homeobox (ZEB)1 and C-terminal binding protein 2 (CtBP2) in a lupus-prone mouse. First, we performed RNA sequencing to identify candidate microRNAs and mRNAs involved in the pathogenesis of SLE. We found that miR-200a-3p was significantly downregulated, whereas its putative targets, ZEB2 and CtBP2, were upregulated in CD4(+) T cells from MRL/lpr-Tnfrsf6(lpr) mice compared with C57BL/6J mice...
June 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28414304/transforming-activity-and-therapeutic-targeting-of-c-terminal-binding-protein-2-in-apc-mutated-neoplasia
#5
E T Sumner, A T Chawla, A D Cororaton, J E Koblinski, R C Kovi, I M Love, B B Szomju, S Korwar, K C Ellis, S R Grossman
Overexpression of the transcriptional coregulators C-terminal binding proteins 1 and 2 (CtBP1 and 2) occurs in many human solid tumors and is associated with poor prognosis. CtBP modulates oncogenic gene expression programs and is an emerging drug target, but its oncogenic role is unclear. Consistent with this oncogenic potential, exogenous CtBP2 transformed primary mouse and human cells to anchorage independence similarly to mutant H-Ras. To investigate CtBP's contribution to in vivo tumorigenesis, Apc(min/+) mice, which succumb to massive intestinal polyposis, were bred to Ctbp2(+/-) mice...
August 17, 2017: Oncogene
https://www.readbyqxmd.com/read/28412731/c-terminal-binding-protein-2-promotes-cell-proliferation-and-migration-in-breast-cancer-via-suppression-of-p16ink4a
#6
Xiaojing Yang, Yi Sun, Hongling Li, Yuhui Shao, Depeng Zhao, Weiwei Yu, Jie Fu
C-terminal binding protein-2 (CtBP2) enhances cancer proliferation and metastasis. The role and mechanism of CtBP2 in breast cancer remains to be elucidated. Western blot and immunochemistry were employed to evaluate the level of CtBP2 and p16INK4A in breast cancer. Genetic manipulation was used to study the expression of p16INK4A and its downstream genes regulated by CtBP2. Functional assays, including colony formation, wound healing, transwell invasion, anchorage-independent growth assay and a xenograft tumor model were used to determine the oncogenic role of CtBP2 in breast cancer progression...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28404932/ctbp2-overexpression-promotes-tumor-cell-proliferation-and-invasion-in-gastric-cancer-and-is-associated-with-poor-prognosis
#7
Faxiang Dai, Yi Xuan, Jie-Jie Jin, Shengjia Yu, Zi-Wen Long, Hong Cai, Xiao-Wen Liu, Ye Zhou, Ya-Nong Wang, Zhong Chen, Hua Huang
C-terminal binding protein-2 (CtBP2), a transcriptional corepressor, has been reported to correlate with tumorigenesis and progression and predict a poor prognosis in several human cancers. However, few studies on CtBP2 in gastric cancer (GC) have been performed. In this research, we evaluated the correlations between CtBP2 expression and the clinicopathological characteristics, as well as prognosis of GC patients. The effects of silencing CtBP2 expression on GC cells biology activity were also assessed. The results showed that CtBP2 was overexpressed in GC tissues and closely correlated with poor differentiation, advanced tumor stage and poor prognosis in GC patients...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28228581/spaceflight-induced-synaptic-modifications-within-hair-cells-of-the-mammalian-utricle
#8
David R Sultemeier, Kristel R Choy, Felix E Schweizer, Larry F Hoffman
Exposure to the microgravity conditions of spaceflight alleviates the load normally imposed by the Earth's gravitational field on the inner ear utricular epithelia. Previous ultrastructural investigations have shown that spaceflight induces an increase in synapse density within hair cells of the rat utricle. However, the utricle exhibits broad physiological heterogeneity across different epithelial regions, and it is unknown whether capabilities for synaptic plasticity generalize to hair cells across its topography...
June 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28213929/exploration-of-the-brn4-regulated-genes-enhancing-adult-hippocampal-neurogenesis-by-rna-sequencing
#9
Jingjing Guo, Xiang Cheng, Lei Zhang, Linmei Wang, Yongxin Mao, Guixiang Tian, Wenhao Xu, Yuhao Wu, Zhi Ma, Jianbing Qin, Meiling Tian, Guohua Jin, Wei Shi, Xinhua Zhang
Adult hippocampal neurogenesis is essential for learning and memory, and its dysfunction is involved in neurodegenerative diseases. However, the molecular mechanisms underlying adult hippocampal neurogenesis are still largely unknown. Our previous studies indicated that the transcription factor Brn4 was upregulated and promoted neuronal differentiation of neural stem cells (NSCs) in the surgically denervated hippocampus in rats. In this study, we use high-throughput RNA sequencing to explore the molecular mechanisms underlying the enhancement of adult hippocampal neurogenesis induced by lentivirus-mediated Brn4 overexpression in vivo...
October 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28179207/down-regulation-of-c-terminal-binding-protein-2-ctbp2-inhibits-proliferation-migration-and-invasion-of-human-shsy5y-cells-in-vitro
#10
Jiang Nan, Sun Guan, Xu Jin, Zhu Jian, Fu Linshan, Guo Jun
Neuroblastoma is the most common extracranial solid tumor in children and is responsible for ∼15% of pediatric cancer deaths. CtBP2 is a member of the CtBP family of proteins that functions as a transcription regulator and has been demonstrated to interact with the C-terminus of the adenoviral E1A oncoprotein. In this study, the expression of CtBP2 in the human neuroblastoma cell line SHSY5Y was down-regulated using lentiviral-mediated RNA interference. Down-regulation of CtBP2 inhibited the expression of c-myc, MMP2, and MMP9 proteins...
April 24, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28111233/ctbp2-ameliorates-palmitate-induced-insulin-resistance-in-hepg2-cells-through-ros-mediated-jnk-pathway
#11
Pingli Liu, Li Shi, Xiaomin Cang, Jieru Huang, Xue Wu, Jin Yan, Ling Chen, Shiwei Cui, Xinhua Ye
Oxidative stress plays a significant role in the development of hepatic insulin resistance, but the underlying molecular mechanisms remain poorly understood. In this study, we discovered that C-terminal-binding protein 2 (CtBP2) level was decreased in insulin resistance. Taking into account the relationship between CtBP family protein (ANGUSTIFOLIA) and reactive oxygen species (ROS) accumulation, we conjectured CtBP2 was involved in insulin resistance through ROS induced stress. In order to verify this hypothesis, we over-expressed CtBP2 in palmitate (PA) treated HepG2 cells...
June 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28040410/a-genome-wide-association-study-of-fast-beta-eeg-in-families-of-european-ancestry
#12
Jacquelyn L Meyers, Jian Zhang, Niklas Manz, Madhavi Rangaswamy, Chella Kamarajan, Leah Wetherill, David B Chorlian, Sun J Kang, Lance Bauer, Victor Hesselbrock, John Kramer, Samuel Kuperman, John I Nurnberger, Jay Tischfield, Jen Chyong Wang, Howard J Edenberg, Alison Goate, Tatiana Foroud, Bernice Porjesz
BACKGROUND: Differences in fast beta (20-28Hz) electroencephalogram (EEG) oscillatory activity distinguish some individuals with psychiatric and substance use disorders, suggesting that it may be a useful endophenotype for studying the genetics of disorders characterized by neural hyper-excitability. Despite the high heritability estimates provided by twin and family studies, there have been relatively few genetic studies of beta EEG, and to date only one genetic association finding has replicated (i...
May 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/27698809/expression-and-prognostic-significance-of-ctbp2-in-human-gliomas
#13
Yong Wang, Shusheng Che, Gang Cai, Yuchao He, Jialei Chen, Wei Xu
Deregulated expression of C-terminal-binding protein 2 (CTBP2) has been observed previously in a number of tumors, such as hepatocellular carcinoma and prostatic cancer, in the colorectal cancer SW480 cell line and in the human embryonic kidney 293 cell line. In the present study, western blot analysis and immunohistochemistry were performed to investigate whether gliomas exhibit deregulated CTBP2 expression. Kaplan-Meier survival analyses were performed to evaluate the associations between CTBP2 expression, clinicopathological data and patient survival in glioma patients...
October 2016: Oncology Letters
https://www.readbyqxmd.com/read/27696081/tyrosine-hydroxylase-expression-in-type-ii-cochlear-afferents-in-mice
#14
Pankhuri Vyas, Jingjing Sherry Wu, Amanda Zimmerman, Paul Fuchs, Elisabeth Glowatzki
Acoustic information propagates from the ear to the brain via spiral ganglion neurons that innervate hair cells in the cochlea. These afferents include unmyelinated type II fibers that constitute 5 % of the total, the majority being myelinated type I neurons. Lack of specific genetic markers of type II afferents in the cochlea has been a roadblock in studying their functional role. Unexpectedly, type II afferents were visualized by reporter proteins induced by tyrosine hydroxylase (TH)-driven Cre recombinase...
February 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27631825/applying-neurotrophins-to-the-round-window-rescues-auditory-function-and-reduces-inner-hair-cell-synaptopathy-after-noise-induced-hearing-loss
#15
David J Sly, Luke Campbell, Aaron Uschakov, Saieda Tasfia Saief, Matthew Lam, Stephen J O'Leary
HYPOTHESIS: Applying neurotrophins to the round window immediately after a single noise exposure will prevent noise-induced hidden hearing loss. BACKGROUND: Loud noise can eliminate neural connections between inner hair cells and their afferent neurons (thereby diminishing sound perception) without causing a detectable change on audiogram. This phenomenon is termed hidden hearing loss. METHODS: Guinea pigs were exposed for 2 hours to 4 to 8 kHz noise at either 95 or 105 dB SPL...
October 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27615547/genome-wide-association-studies-identify-susceptibility-loci-affecting-respiratory-disease-in-chinese-erhualian-pigs-under-natural-conditions
#16
X Huang, T Huang, W Deng, G Yan, H Qiu, Y Huang, S Ke, Y Hou, Y Zhang, Z Zhang, S Fang, L Zhou, B Yang, J Ren, H Ai, L Huang
Prevalence of swine respiratory disease causes poor growth performance in and serious economic losses to the swine industry. In this study, a categorical trait of enzootic pneumonia-like (EPL) score representing the infection gradient of a respiratory disease, more likely enzootic pneumonia, was recorded in a herd of 332 Chinese Erhualian pigs. According to their EPL scores and the disease effect on weight gains, these pigs were grouped into controls (EPL score ≤ 1) and cases (EPL score > 1). The weight gain of the case group reduced significantly at days 180, 210, 240 and 300 as compared to the control group...
February 2017: Animal Genetics
https://www.readbyqxmd.com/read/27557510/klrg1-restricts-memory-t-cell-antitumor-immunity
#17
Lei Li, Shanshan Wan, Kaixiong Tao, Guobin Wang, Ende Zhao
Killer cell lectin-like receptor subfamily G member 1 (KLRG1) has been found on human memory T lymphocytes. However, the roles of KLRG1 on human T cells especially in tumor microenvironment have not been fully understood. Our results showed KLRG1 expression on T cells significantly increased in tumor microenvironment. KLRG1+ T cells exhibited poor proliferative capacity with decreased effector cytokine production. Meanwhile, KLRG1+ T cells expressed abundant pro-inflammatory cytokines and demonstrated high level of Foxp3 expression...
September 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/27539716/genome-wide-association-analysis-identifies-dcc-as-an-essential-factor-in-the-innervation-of-the-peripheral-vestibular-system-in-inbred-mice
#18
Pezhman Salehi, Anthony Myint, Young J Kim, Marshall X Ge, Joel Lavinsky, Maria K Ho, Amanda L Crow, Charlene Cruz, Maya Monges-Hernadez, Juemei Wang, Jaana Hartiala, Li I Zhang, Hooman Allayee, Aldons J Lusis, Takahiro Ohyama, Rick A Friedman
This study aimed to investigate the genetic causes of vestibular dysfunction. We used vestibular sensory-evoked potentials (VsEPs) to characterize the vestibular function of 35 inbred mouse strains selected from the Hybrid Mouse Diversity Panel and demonstrated strain-dependent phenotypic variation in vestibular function. Using these phenotypic data, we performed the first genome-wide association study controlling for population structure that has revealed two highly suggestive loci, one of which lies within a haplotype block containing five genes (Stard6, 4930503L19Rik, Poli, Mbd2, Dcc) on Chr...
October 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27534394/discovering-gene-expression-signatures-responding-to-tyrosine-kinase-inhibitor-treatment-in-chronic-myeloid-leukemia
#19
Kihoon Cha, Yi Li, Gwan-Su Yi
BACKGROUND: Tyrosine kinase inhibitor (TKI)-based therapy is a recommended treatment for patients with chronic myeloid leukemia (CML). However, a considerable group of CML patients do not respond well to the TKI therapy. Challenging to overcome this problem, we tried to discover molecular signatures in gene expression profiles to discriminate the responders and non-responders of TKI therapy. METHODS: We collected three microarray datasets of CML patients having total 73 responders and 38 non-responders...
2016: BMC Medical Genomics
https://www.readbyqxmd.com/read/27527066/microrna-regulatory-circuits-in-a-mouse-model-of-inherited-retinal-degeneration
#20
Arpad Palfi, Karsten Hokamp, Stefanie M Hauck, Sebastian Vencken, Sophia Millington-Ward, Naomi Chadderton, Mathew Carrigan, Elod Kortvely, Catherine M Greene, Paul F Kenna, G Jane Farrar
miRNA dysregulation is a hallmark of many neurodegenerative disorders, including those involving the retina. Up-regulation of miR-1/133 and miR-142, and down-regulation of miR-183/96/182 has been described in the RHO-P347S mouse retina, a model for a common form of inherited blindness. High-throughput LC-MS/MS was employed to analyse the protein expression of predicted targets for these miRNAs in RHO-P347S mouse retinas; 133 potential target genes were identified. Pathway over-representation analysis suggests G-protein signaling/visual transduction, and synaptic transmission for miR-1, and transmembrane transport, cell-adhesion, signal transduction and apoptosis for miR-183/96/182 as regulated functions in retina...
2016: Scientific Reports
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