keyword
MENU ▼
Read by QxMD icon Read
search

cullin

keyword
https://www.readbyqxmd.com/read/29328377/feature-genes-in-metastatic-breast-cancer-identified-by-metade-and-svm-classifier-methods
#1
Youlin Tuo, Ning An, Ming Zhang
The aim of the present study was to investigate the feature genes in metastatic breast cancer samples. A total of 5 expression profiles of metastatic breast cancer samples were downloaded from the Gene Expression Omnibus database, which were then analyzed using the MetaQC and MetaDE packages in R language. The feature genes between metastasis and non‑metastasis samples were screened under the threshold of P<0.05. Based on the protein‑protein interactions (PPIs) in the Biological General Repository for Interaction Datasets, Human Protein Reference Database and Biomolecular Interaction Network Database, the PPI network of the feature genes was constructed...
January 9, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29328363/support-vector-machine-classifier-for-prediction-of-the-metastasis-of-colorectal-cancer
#2
Jiajun Zhi, Jiwei Sun, Zhongchuan Wang, Wenjun Ding
Colorectal cancer (CRC) is one of the most common cancers and a major cause of mortality. The present study aimed to identify potential biomarkers for CRC metastasis and uncover the mechanisms underlying the etiology of the disease. The five datasets GSE68468, GSE62321, GSE22834, GSE14297 and GSE6988 were utilized in the study, all of which contained metastatic and non-metastatic CRC samples. Among them, three datasets were integrated via meta-analysis to identify the differentially expressed genes (DEGs) between the two types of samples...
January 2, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29317636/the-expression-of-inhibitor-of-bruton-s-tyrosine-kinase-gene-is-progressively-up-regulated-in-the-clinical-course-of-chronic-lymphocytic-leukaemia-conferring-resistance-to-apoptosis
#3
Francesco Albano, Federico Chiurazzi, Selena Mimmi, Eleonora Vecchio, Arianna Pastore, Clementina Cimmino, Camilla Frieri, Enrico Iaccino, Antonio Pisano, Gaetanina Golino, Giuseppe Fiume, Massimo Mallardo, Giuseppe Scala, Ileana Quinto
Chronic lymphocytic leukaemia (CLL) is the most common B-cell malignancy with a variable clinical outcome. Biomarkers of CLL progression are required for optimising prognosis and therapy. The Inhibitor of Bruton's tyrosine kinase-isoform α (IBTKα) gene encodes a substrate receptor of Cullin 3-dependent E3 ubiquitin ligase, and promotes cell survival in response to the reticulum stress. Searching for novel markers of CLL progression, we analysed the expression of IBTKα in the peripheral blood B-cells of CLL patients, before and after first line therapy causing remission...
January 9, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29306329/gene-expression-signature-regulated-by-the-keap1-nrf2-cul3-axis-is-associated-with-a-poor-prognosis-in-head-and-neck-squamous-cell-cancer
#4
Akhileshwar Namani, Md Matiur Rahaman, Ming Chen, Xiuwen Tang
BACKGROUND: NRF2 is the key regulator of oxidative stress in normal cells and aberrant expression of the NRF2 pathway due to genetic alterations in the KEAP1 (Kelch-like ECH-associated protein 1)-NRF2 (nuclear factor erythroid 2 like 2)-CUL3 (cullin 3) axis leads to tumorigenesis and drug resistance in many cancers including head and neck squamous cell cancer (HNSCC). The main goal of this study was to identify specific genes regulated by the KEAP1-NRF2-CUL3 axis in HNSCC patients, to assess the prognostic value of this gene signature in different cohorts, and to reveal potential biomarkers...
January 6, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29274277/cul4b-promotes-metastasis-and-proliferation-in-pancreatic-cancer-cells-by-inducing-epithelial-mesenchymal-transition-via-the-wnt-%C3%AE-catenin-signaling-pathway
#5
Yue-Ming He, Yu-Sha Xiao, Lei Wei, Jia-Qiang Zhang, Cheng-Hong Peng
This study determines whether cullin 4B (CUL4B) promotes pancreatic cancer (PC) metastasis by inducing epithelial-mesenchymal transition (EMT) via the Wnt/β-catenin signaling pathway. Sixty-four PC patients were enrolled in this study. Human PC cell lines were distributed into blank, negative control, shCUL4B, PLOC, PLOC-CUL4B and PLOC-CUL4B + siRNA-β-catenin groups. The expressions of CUL4B, Wnt/β-catenin signaling pathway-related proteins, and EMT-related proteins were determined using RT-qPCR and western blotting...
December 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29258557/moloney-leukemia-virus-10-mov10-inhibits-the-degradation-of-apobec3g-through-interference-with-the-vif-mediated-ubiquitin-proteasome-pathway
#6
Cancan Chen, Xiaocao Ma, Qifei Hu, Xinghua Li, Feng Huang, Junsong Zhang, Ting Pan, Jinyu Xia, Chao Liu, Hui Zhang
BACKGROUND: MOV10 protein has ATP-dependent 5'-3' RNA helicase activity and belongs to the UPF1p superfamily. It can inhibit human immunodeficiency virus type 1 (HIV-1) replication at multiple stages and interact with apolipoprotein-B-mRNA-editing enzyme catalytic polypeptide-like 3G (APOBEC3G or A3G), a member of the cytidine deaminase family that exerts potent inhibitory effects against HIV-1 infection. However, HIV-1-encoded virion infectivity factor (Vif) protein specifically mediates the degradation of A3G via the ubiquitin-proteasome system (UPS)...
December 19, 2017: Retrovirology
https://www.readbyqxmd.com/read/29251491/glycosylation-promotes-random-coil-to-helix-transition-in-a-region-of-a-protist-skp1-associated-with-f-box-binding
#7
Xianzhong Xu, Alexander Eletsky, M Osman Sheikh, James H Prestegard, Christopher M West
Cullin-Ring-Ligases mediate protein polyubiquitination, a signal for degradation in the 26S-proteasome. The CRL1 class consists of Skp1/cullin-1/F-box protein/Rbx1 (SCF) complexes that cyclically associate with ubiquitin-E2 to build the polyubiquitin chain. Within the SCF complex, the 162-amino acid DdSkp1 from Dictyostelium bridges cullin-1 with an F-box protein (FBP), the specificity factor for substrate selection. The hydroxylation-dependent glycosylation of Pro143 of DdSkp1 by a pentasaccharide forms the basis of a novel O2-sensing mechanism in the social amoeba Dictyostelium and other protists...
December 18, 2017: Biochemistry
https://www.readbyqxmd.com/read/29249570/cullin-3-based-ubiquitin-ligases-as-master-regulators-of-mammalian-cell-differentiation
#8
REVIEW
Wolfgang Dubiel, Dawadschargal Dubiel, Dieter A Wolf, Michael Naumann
Specificity of the ubiquitin proteasome system is controlled by ubiquitin E3 ligases, including their major representatives, the multisubunit cullin-RING ubiquitin (Ub) ligases (CRLs). More than 200 different CRLs are divided into seven families according to their cullin scaffolding proteins (CUL1-7) around which they are assembled. Research over two decades has revealed that different CRL families are specialized to fulfill specific cellular functions. Whereas many CUL1-based CRLs (CRL1s) ubiquitylate cell cycle regulators, CRL4 complexes often associate with chromatin to control DNA metabolism...
December 14, 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/29243257/differential-impact-of-tongue-exercise-on-intrinsic-lingual-muscles
#9
Miranda J Cullins, Brittany N Krekeler, Nadine P Connor
OBJECTIVES/HYPOTHESIS: Aging is associated with muscle fiber hypotrophy and decreased percentages of rapidly contracting myosin heavy chain (MyHC) type IIb muscle fibers. Tongue exercise programs used to treat dysphagia target age-related decline in tongue muscle function, but the impact of exercise on the intrinsic tongue muscles is unknown. We hypothesized that exercise would induce muscle fiber hypertrophy and increase the percentage of MyHC IIa fibers in the intrinsic tongue. STUDY DESIGN: Animal model...
December 15, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29241538/an-elongin-cullin-socs-box-complex-regulates-stress-induced-serotonergic-neuromodulation
#10
Xicotencatl Gracida, Michael F Dion, Gareth Harris, Yun Zhang, John A Calarco
Neuromodulatory cells transduce environmental information into long-lasting behavioral responses. However, the mechanisms governing how neuronal cells influence behavioral plasticity are difficult to characterize. Here, we adapted the translating ribosome affinity purification (TRAP) approach in C. elegans to profile ribosome-associated mRNAs from three major tissues and the neuromodulatory dopaminergic and serotonergic cells. We identified elc-2, an Elongin C ortholog, specifically expressed in stress-sensing amphid neuron dual ciliated sensory ending (ADF) serotonergic sensory neurons, and we found that it plays a role in mediating a long-lasting change in serotonin-dependent feeding behavior induced by heat stress...
December 12, 2017: Cell Reports
https://www.readbyqxmd.com/read/29233982/cacul1-reciprocally-regulates-sirt1-and-lsd1-to-repress-ppar%C3%AE-and-inhibit-adipogenesis
#11
Min Jun Jang, Ui-Hyun Park, Jeong Woo Kim, Hanbyeul Choi, Soo-Jong Um, Eun-Joo Kim
Peroxisome proliferator-activated receptor γ (PPARγ) is the master regulator of adipocyte differentiation and is closely linked to the development of obesity. Despite great progress in elucidating the transcriptional network of PPARγ, epigenetic regulation of this pathway by histone modification remains elusive. Here, we found that CDK2-associated cullin 1 (CACUL1), identified as a novel SIRT1 interacting protein, directly bound to PPARγ through the co-repressor nuclear receptor (CoRNR) box 2 and repressed the transcriptional activity and adipogenic potential of PPARγ...
December 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29233834/the-arabidopsis-alf4-protein-is-a-regulator-of-scf-e3-ligases
#12
Rammyani Bagchi, Charles W Melnyk, Gideon Christ, Martin Winkler, Kerstin Kirchsteiner, Mohammad Salehin, Julia Mergner, Michael Niemeyer, Claus Schwechheimer, Luz Irina A Calderón Villalobos, Mark Estelle
The cullin-RING E3 ligases (CRLs) regulate diverse cellular processes in all eukaryotes. CRL activity is controlled by several proteins or protein complexes, including NEDD8, CAND1, and the CSN Recently, a mammalian protein called Glomulin (GLMN) was shown to inhibit CRLs by binding to the RING BOX (RBX1) subunit and preventing binding to the ubiquitin-conjugating enzyme. Here, we show that Arabidopsis ABERRANT LATERAL ROOT FORMATION4 (ALF4) is an ortholog of GLMN The alf4 mutant exhibits a phenotype that suggests defects in plant hormone response...
December 12, 2017: EMBO Journal
https://www.readbyqxmd.com/read/29207184/cullin%C3%A2-7-is-a-predictor-of-poor-prognosis-in-breast-cancer-patients-and-is-involved-in-the-proliferation-and-invasion-of-breast-cancer-cells-by-regulating-the-cell-cycle-and-microtubule-stability
#13
Ni Qiu, Yufang He, Siming Zhang, Xinpeng Hu, Mingsheng Chen, Hongsheng Li
Cullin 7 is the 'scaffold' of the cullin-RING-based E3 ligases which catalyze the final step of the ubiquitination cascade in eukaryotic organisms. Although one study has reported the involvement of cullin 7 in the invasion and migration of breast cancer cells without further exploration of its mechanisms, the expression of cullin 7 in breast cancer tissues and its clinical significance have not been reported. The present study evaluated cullin 7 protein expression in malignant and benign breast tissues using immunochemistry, and further analyzed the association of positive cullin 7 expression in breast cancer tissues with clinicopathological characteristics of breast cancer patients...
November 21, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29191848/keratin-6a-reorganization-for-ubiquitin-proteasomal-processing-is-a-direct-antimicrobial-response
#14
Jonathan K L Chan, Don Yuen, Priscilla Hiu-Mei Too, Yan Sun, Belinda Willard, David Man, Connie Tam
Skin and mucosal epithelia deploy antimicrobial peptides (AMPs) to eliminate harmful microbes. We reported that the intermediate filament keratin 6a (K6a) is constitutively processed into antimicrobial fragments in corneal epithelial cells. In this study, we show that K6a network remodeling is a host defense response that directly up-regulates production of keratin-derived AMPs (KAMPs) by the ubiquitin-proteasome system (UPS). Bacterial ligands trigger K6a phosphorylation at S19, S22, S37, and S60, leading to network disassembly...
November 30, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29167802/shutdown-of-interferon-signaling-by-a-viral-hijacked-e3-ubiquitin-ligase
#15
COMMENT
Kaitlin A Davis, John T Patton
Viruses manipulate cellular processes to create an environment favorable to replication. For most viruses, this includes subverting the expression of interferon (IFN), a signaling molecule that can stimulate production of a vast array of antiviral gene products. Rotavirus, a segmented double-stranded RNA virus that causes acute gastroenteritis in infants and young children, inhibits IFN expression through its nonstructural protein NSP1. This viral protein stifles IFN expression by inducing the degradation of host factors that are necessary for upregulating the activity of IFN genes...
November 3, 2017: Microbial Cell
https://www.readbyqxmd.com/read/29160310/cyclin-d-cdk4-kinase-destabilizes-pd-l1-via-cul3-spop-to-control-cancer-immune-surveillance
#16
Jinfang Zhang, Xia Bu, Haizhen Wang, Yasheng Zhu, Yan Geng, Naoe Taira Nihira, Yuyong Tan, Yanpeng Ci, Fei Wu, Xiangpeng Dai, Jianping Guo, Yu-Han Huang, Caoqi Fan, Shancheng Ren, Yinghao Sun, Gordon J Freeman, Piotr Sicinski, Wenyi Wei
Treatments that target immune checkpoints, such as the one mediated by programmed cell death protein 1 (PD-1) and its ligand PD-L1, have been approved for treating human cancers with durable clinical benefit(1,2). However, many cancer patients fail to respond to anti-PD-1/PD-L1 treatment, and the underlying mechanism(s) is not well understood(3-5). Recent studies revealed that response to PD-1/PD-L1 blockade might correlate with PD-L1 expression levels in tumor cells(6,7). Hence, it is important to mechanistically understand the pathways controlling PD-L1 protein expression and stability, which can offer a molecular basis to improve the clinical response rate and efficacy of PD-1/PD-L1 blockade in cancer patients...
November 16, 2017: Nature
https://www.readbyqxmd.com/read/29157102/chk1-inhibitor-sch-900776-enhances-the-antitumor-activity-of-mln4924-on-pancreatic-cancer
#17
Jian-Ang Li, Chao Song, Yefei Rong, Tiantao Kuang, Dansong Wang, Xuefeng Xu, Jian Yuan, Kuntian Luo, Bo Qin, Somaira Nowsheen, Zhenkun Lou, Wenhui Lou
MLN4924 inhibits the cullin-RING ligases mediated ubiquitin-proteasome system, and has showed antitumor activities in preclinical studies, but its effects and mechanisms on pancreatic cancer (PC) remains elusive. We found that MLN4924 inhibited the proliferation and clonogenicity of PC cells, caused DNA damage, particularly double-strand breaks, and leaded to Chk1 activation and cell-cycle arrest. Chk1 inhibitor SCH 900776 alone exhibited minimal cytotoxicity, and caused no DNA damage on PC cells. But in the combination therapy, SCH 900776 enhanced the cytotoxicity and DNA damage caused by MLN4924, likely by abrogating G2/M arrest and promoting DNA re-replication...
November 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/29149173/trade-off-and-flexibility-in-the-dynamic-regulation-of-the-cullin-ring-ubiquitin-ligase-repertoire
#18
Ronny Straube, Meera Shah, Dietrich Flockerzi, Dieter A Wolf
Cullin-RING ubiquitin ligases (CRLs) catalyze the ubiquitylation of substrates many of which are degraded by the 26S proteasome. Their modular architecture enables recognition of numerous substrates via exchangeable substrate receptors that competitively bind to a cullin scaffold with high affinity. Due to the plasticity of these interactions there is ongoing uncertainty how cells maintain a flexible CRL repertoire in view of changing substrate loads. Based on a series of in vivo and in vitro studies, different groups proposed that the exchange of substrate receptors is mediated by a protein exchange factor named Cand1...
November 17, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29128526/functional-analysis-of-cullin-3-e3-ligases-in-tumorigenesis
#19
REVIEW
Ji Cheng, Jianping Guo, Zhiwei Wang, Brian J North, Kaixiong Tao, Xiangpeng Dai, Wenyi Wei
Cullin 3-RING ligases (CRL3) play pivotal roles in the regulation of various physiological and pathological processes, including neoplastic events. The substrate adaptors of CRL3 typically contain a BTB domain that mediates the interaction between Cullin 3 and target substrates to promote their ubiquitination and subsequent degradation. The biological implications of CRL3 adaptor proteins have been well described where they have been found to play a role as either an oncogene, tumor suppressor, or can mediate either of these effects in a context-dependent manner...
November 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29117266/a-screen-for-e3-ubiquitination-ligases-that-genetically-interact-with-the-adaptor-protein-cindr-during-drosophila-eye-patterning
#20
Kwami F Ketosugbo, Henry L Bushnell, Ruth I Johnson
Ubiquitination is a crucial post-translational modification that can target proteins for degradation. The E3 ubiquitin ligases are responsible for recognizing substrate proteins for ubiquitination, hence providing specificity to the process of protein degradation. Here, we describe a genetic modifier screen that identified E3 ligases that modified the rough-eye phenotype generated by expression of cindrRNAi transgenes during Drosophila eye development. In total, we identified 36 E3 ligases, as well as 4 Cullins, that modified the mild cindrRNA mis-patterning phenotype...
2017: PloS One
keyword
keyword
59761
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"