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https://www.readbyqxmd.com/read/28434146/differential-regulation-of-h3s10-phosphorylation-mitosis-progression-and-cell-fate-by-aurora-kinase-b-and-c-in-mouse-preimplantation-embryos
#1
Wenzhi Li, Peizhe Wang, Bingjie Zhang, Jing Zhang, Jia Ming, Wei Xie, Jie Na
Coordination of cell division and cell fate is crucial for the successful development of mammalian early embryos. Aurora kinases are evolutionarily conserved serine/threonine kinases and key regulators of mitosis. Aurora kinase B (AurkB) is ubiquitously expressed while Aurora kinase C (AurkC) is specifically expressed in gametes and preimplantation embryos. We found that increasing AurkC level in one blastomere of the 2-cell embryo accelerated cell division and decreasing AurkC level slowed down mitosis. Changing AurkB level had the opposite effect...
April 22, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28404751/chromosomal-passenger-complex-hydrodynamics-suggests-chaperoning-of-the-inactive-state-by-nucleoplasmin-nucleophosmin
#2
Mariah L Hanley, Tae Yeon Yoo, Matthew Sonnett, Daniel J Needleman, Timothy J Mitchison
The chromosomal passenger complex (CPC) is a conserved, essential regulator of cell division. As such, significant anti-cancer drug development efforts have been focused on targeting it, most notably by inhibiting its AURKB kinase subunit. The CPC is activated by AURKB-catalyzed autophosphorylation on multiple subunits, but how this regulates CPC interactions with other mitotic proteins remains unclear. We investigated the hydrodynamic behavior of the CPC in Xenopus laevis egg cytosol using sucrose gradient sedimentation and in HeLa cells using fluorescence correlation spectroscopy (FCS)...
April 12, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28386317/alisertib-induces-g2-m-arrest-apoptosis-and-autophagy-via-pi3k-akt-mtor-and-p38-mapk-mediated-pathways-in-human-glioblastoma-cells
#3
Zheng Liu, Feng Wang, Zhi-Wei Zhou, He-Chun Xia, Xin-Yu Wang, Yin-Xue Yang, Zhi-Xu He, Tao Sun, Shu-Feng Zhou
Glioblastoma (GBM) is the most common brain tumor with poor response to current therapeutics. Alisertib (ALS), a second-generation selective Aurora kinase A (AURKA) inhibitor, has shown potent anticancer effects on solid tumors in animal studies. This study aimed to investigate the killing effect of ALS on GBM cell line DAOY and the possible underlying mechanisms using both bioinformatic and cell-based approaches. Our molecular docking showed that ALS preferentially bound AURKA over AURKB via hydrogen bond formation, charge interaction, and π-π stacking...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28369513/identification-and-characterization-of-aurora-kinase-b-and-c-variants-associated-with-maternal-aneuploidy
#4
Alexandra L Nguyen, Diego Marin, Anbo Zhou, Amanda S Gentilello, Evan M Smoak, Zubing Cao, Anastasia Fedick, Yujue Wang, Deanne Taylor, Richard T Scott, Jinchuan Xing, Nathan Treff, Karen Schindler
STUDY QUESTION: Are single nucleotide variants (SNVs) in Aurora kinases B and C associated with risk of aneuploid conception? SUMMARY ANSWER: Two SNVs were found in patients with extreme aneuploid concepti rates with respect to their age; one variant, AURKC p.I79V, is benign, while another, AURKB p.L39P, is a potential gain-of-function mutant with increased efficiency in promoting chromosome alignment. WHAT IS KNOWN ALREADY: Maternal age does not always predict aneuploidy risk, and rare gene variants can be drivers of disease...
March 25, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28359584/specialize-and-divide-twice-functions-of-three-aurora-kinase-homologs-in-mammalian-oocyte-meiotic-maturation
#5
REVIEW
Alexandra L Nguyen, Karen Schindler
The aurora kinases (AURKs) comprise an evolutionarily conserved family of serine/threonine kinases involved in mitosis and meiosis. While most mitotic cells express two AURK isoforms (AURKA and AURKB), mammalian germ cells also express a third, AURKC. Although much is known about the functions of the kinases in mitosis, less is known about how the three isoforms function to coordinate meiosis. This review is aimed at describing what is known about the three isoforms in female meiosis, the similarities and differences between kinase functions, and speculates as to why mammalian germ cells require expression of three AURKs instead of two...
May 2017: Trends in Genetics: TIG
https://www.readbyqxmd.com/read/28330808/germline-genetic-biomarkers-of-sunitinib-efficacy-in-advanced-renal-cell-carcinoma-results-from-the-renal-effect-trial
#6
Robert J Motzer, Robert A Figlin, Jean-François Martini, Subramanian Hariharan, Neeraj Agarwal, Chun Xiao Li, J Andrew Williams, Thomas E Hutson
BACKGROUND: Sunitinib, the vascular endothelial growth factor pathway inhibitor, is an established standard-of-care for advanced renal cell carcinoma (RCC). This study aimed to assess correlations between candidate germline single nucleotide polymorphisms (SNPs) and sunitinib efficacy in patients from the RENAL EFFECT trial (NCT00267748), a randomized phase II study in patients with metastatic RCC comparing the 4-weeks-on/2-weeks-off schedule and a continuous daily dosing schedule. PATIENTS AND METHODS: Informed consent for pharmacogenetics research was obtained from 202 out of 289 treated patients in the trial...
February 27, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28228757/regulation-of-epigenetic-modifiers-including-kdm6b-by-interferon-%C3%AE-and-interleukin-4-in-human-macrophages
#7
Gökçe Yıldırım-Buharalıoğlu, Mark Bond, Graciela B Sala-Newby, Charles C T Hindmarch, Andrew C Newby
BACKGROUND: Interferon-γ (IFN-γ) or interleukin-4 (IL-4) drives widely different transcriptional programs in macrophages. However, how IFN-γ and IL-4 alter expression of histone-modifying enzymes involved in epigenetic regulation and how this affects the resulting phenotypic polarization is incompletely understood. METHODS AND RESULTS: We investigated steady-state messenger RNA levels of 84 histone-modifying enzymes and related regulators in colony-stimulating factor-1 differentiated primary human macrophages using quantitative polymerase chain reaction...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28147341/aurora-kinases-novel-therapy-targets-in-cancers
#8
REVIEW
Anqun Tang, Keyu Gao, Laili Chu, Rui Zhang, Jing Yang, Junnian Zheng
Aurora kinases, a family of serine/threonine kinases, consisting of Aurora A (AURKA), Aurora B (AURKB) and Aurora C (AURKC), are essential kinases for cell division via regulating mitosis especially the process of chromosomal segregation. Besides regulating mitosis, Aurora kinases have been implicated in regulating meiosis. The deletion of Aurora kinases could lead to failure of cell division and impair the embryonic development. Overexpression or gene amplification of Aurora kinases has been clarified in a number of cancers...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28095398/aurora-b-expression-modulates-paclitaxel-response-in-non-small-cell-lung-cancer
#9
Ahmed Sk Al-Khafaji, Michael Pa Davies, Janet M Risk, Michael W Marcus, Maria Koffa, John R Gosney, Richard J Shaw, John K Field, Triantafillos Liloglou
BACKGROUND: Taxanes are mitotic poisons widely used in the treatment of non-small cell lung cancer (NSCLC), however, little is known about potential molecular modulators of response to these compounds. Aurora B (AURKB) is a critical regulator of the mitotic spindle assembly, previously shown overexpressed in NSCLC. Here we investigated the hypothesis that AURKB expression modulates the efficacy of taxanes in NSCLC cells. METHODS: AURKB mRNA expression was determined by qPCR in 132 frozen NSCLC tissues and nine NSCLC cell lines...
February 28, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28028179/functional-effects-of-akt3-on-aurora-kinase-inhibitor-induced-aneuploidy
#10
Kohji Noguchi, Keita Hongama, Shiori Hariki, Yuma Nonomiya, Kazuhiro Katayama, Yoshikazu Sugimoto
The suppression of mitotic Aurora kinases (AURKs) by AURK inhibitors frequently causes cytokinetic failure, leading to polyploidy or aneuploidy, indicating the critical role of AURK-mediated phosphorylation during cytokinesis. We demonstrate the deregulated expression of AKT3 in Aurora kinase inhibitor (AURKi)-resistant cells, which we established from human colorectal cancer HCT 116 cells. The AKT family, which includes AKT1, -2, and -3, plays multiple roles in antiapoptotic functions and drug resistance and is involved in cell growth and survival pathways...
February 3, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28008150/prkar2b-plays-an-oncogenic-role-in-the-castration-resistant-prostate-cancer
#11
Jianjun Sha, Wei Xue, Baijun Dong, Jiahua Pan, Xiaorong Wu, Dong Li, Dongming Liu, Yiran Huang
Castration-resistant prostate cancer (CRPC) is an advanced form of prostate cancer. Despite some progresses have been made, the mechanism of CRPC development is still largely unknown, including the genes involved in its development have not been well defined. Here, we identifiedPRKAR2B to be a gene over-expressingin castration-resistant prostate cancer by analyzing the different online databases. Followed functional validation experiments showed that PRKAR2B promoted CRPC cell proliferation and invasion, and inhibited CRPC cell apoptosis...
January 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/27895801/in-vitro-evaluation-of-a-combination-treatment-involving-anticancer-agents-and-an-aurora-kinase-b-inhibitor
#12
Senna Sakai, Hiroto Izumi, Yukiko Yoshiura, Yoshifumi Nakayama, Takahiro Yamaguchi, Yoshikazu Harada, Chiho Koi, Hiroyuki Kurata, Yasuo Morimoto
Aurora kinase B (AURKB) inhibitors are regarded as potential molecular-targeting drugs for cancer therapy. The present study evaluated the cytotoxic effect of a combination of AZD1152-hQPA, an AURKB inhibitor, and various anticancer agents on the HeLa human cervical cancer cell line, as well as its cisplatin-resistant equivalent HCP4 cell line. It was demonstrated that AZD1152-hQPA had an antagonistic effect on the cytotoxicity of cisplatin, etoposide and doxorubicin, but had a synergistic effect on that of all-trans-retinoic acid (ATRA), Am80 and TAC-101, when tested on HeLa cells...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27888627/identification-of-differentially-expressed-genes-in-the-development-of-osteosarcoma-using-rna-seq
#13
Yihao Yang, Ya Zhang, Xin Qu, Junfeng Xia, Dongqi Li, Xiaojuan Li, Yu Wang, Zewei He, Su Li, Yonghong Zhou, Lin Xie, Zuozhang Yang
OBJECTIVE: Osteosarcoma (OS) is a malignant bone tumor with high morbidity in young adults and adolescents. This study aimed to discover potential early diagnosis biomarkers in OS. RESULTS: In total, 111 differentially expressed genes (DEGs) were identified in primary OS compared with normal controls and 235 DEGs were identified in metastatic OS compared with primary OS. AURKB and PPP2R2B were the significantly up-regulated and down-regulated hub proteins, respectively, in the PPI protein-protein network (PPI) network of primary OS...
December 27, 2016: Oncotarget
https://www.readbyqxmd.com/read/27866912/investigation-of-candidate-genes-for-osteoarthritis-based-on-gene-expression-profiles
#14
Shuanghai Dong, Tian Xia, Lei Wang, Qinghua Zhao, Jiwei Tian
OBJECTIVE: To explore the mechanism of osteoarthritis (OA) and provide valid biological information for further investigation. METHODS: Gene expression profile of GSE46750 was downloaded from Gene Expression Omnibus database. The Linear Models for Microarray Data (limma) package (Bioconductor project, http://www.bioconductor.org/packages/release/bioc/html/limma.html) was used to identify differentially expressed genes (DEGs) in inflamed OA samples. Gene Ontology function enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways enrichment analysis of DEGs were performed based on Database for Annotation, Visualization and Integrated Discovery data, and protein-protein interaction (PPI) network was constructed based on the Search Tool for the Retrieval of Interacting Genes/Proteins database...
December 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27793800/gene-expression-profiling-of-epigenetic-chromatin-modification-enzymes-and-histone-marks-by-cigarette-smoke-implications-for-copd-and-lung-cancer
#15
Isaac K Sundar, Irfan Rahman
Chromatin-modifying enzymes mediate DNA methylation and histone modifications on recruitment to specific target gene loci in response to various stimuli. The key enzymes that regulate chromatin accessibility for maintenance of modifications in DNA and histones, and for modulation of gene expression patterns in response to cigarette smoke (CS), are not known. We hypothesize that CS exposure alters the gene expression patterns of chromatin-modifying enzymes, which then affects multiple downstream pathways involved in the response to CS...
December 1, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27748395/human-genome-wide-rnai-screen-reveals-host-factors-required-for-enterovirus-71-replication
#16
Kan Xing Wu, Patchara Phuektes, Pankaj Kumar, Germaine Yen Lin Goh, Dimitri Moreau, Vincent Tak Kwong Chow, Frederic Bard, Justin Jang Hann Chu
Enterovirus 71 (EV71) is a neurotropic enterovirus without antivirals or vaccine, and its host-pathogen interactions remain poorly understood. Here we use a human genome-wide RNAi screen to identify 256 host factors involved in EV71 replication in human rhabdomyosarcoma cells. Enrichment analyses reveal overrepresentation in processes like mitotic cell cycle and transcriptional regulation. We have carried out orthogonal experiments to characterize the roles of selected factors involved in cell cycle regulation and endoplasmatic reticulum-associated degradation...
October 17, 2016: Nature Communications
https://www.readbyqxmd.com/read/27697110/oct4-resetting-by-aurkb-pp1-cell-cycle-axis-determines-the-identity-of-mouse-embryonic-stem-cells
#17
Jihoon Shin, Hong-Duk Youn
In embryonic stem cells (ESCs), cell cycle regulation is deeply connected to pluripotency. Especially, core transcription factors (CTFs) which are essential to maintaining the pluripotency transcription programs should be reset during M/G1 transition. However, it remains unknown about how CTFs are governed during cell cycle progression. Here, we describe that the regulation of Oct4 by Aurora kinase b (Aurkb)/protein phosphatase 1 (PP1) axis during the cell cycle is important for resetting Oct4 to pluripotency and cell cycle related target genes in determining the identity of ESCs...
October 2016: BMB Reports
https://www.readbyqxmd.com/read/27612557/inhibition-of-aurora-kinases-induces-apoptosis-and-autophagy-via-aurkb-p70s6k-rpl15-axis-in-human-leukemia-cells
#18
Si-Jia He, Li-Ping Shu, Zhi-Wei Zhou, Tianxin Yang, Wei Duan, Xueji Zhang, Zhi-Xu He, Shu-Feng Zhou
Leukemia is a common malignancy of blood cells with poor prognosis in many patients. Aurora kinases, a family of serine/threonine kinases, play a key role in regulating cell division and mitosis and are linked to tumorigenesis, metastasis, and poor prognosis in many human cancers including leukemia and lymphoma. Danusertib (Danu) is a pan-inhibitor of Aurora kinases with few data available in leukemia therapy. This study aimed to identify new molecular targets for Aurora kinase inhibition in human leukemia cells using quantitative proteomic analysis followed by verification experiments...
September 6, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27610375/integrated-analysis-of-dna-methylation-and-mrna-expression-profiles-data-to-identify-key-genes-in-lung-adenocarcinoma
#19
Xiang Jin, Xingang Liu, Xiaodan Li, Yinghui Guan
Introduction. Lung adenocarcinoma (LAC) is the most frequent type of lung cancer and has a high metastatic rate at an early stage. This study is aimed at identifying LAC-associated genes. Materials and Methods. GSE62950 downloaded from Gene Expression Omnibus included a DNA methylation dataset and an mRNA expression profiles dataset, both of which included 28 LAC tissue samples and 28 adjacent normal tissue samples. The differentially expressed genes (DEGs) were screened by Limma package in R, and their functions were predicted by enrichment analysis using TargetMine online tool...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27447890/reversine-triggers-mitotic-catastrophe-and-apoptosis-in-k562-cells
#20
Ana Paula Nunes Rodrigues Alves, João Agostinho Machado-Neto, Priscila Santos Scheucher, Helder Henrique Paiva, Belinda Pinto Simões, Eduardo Magalhães Rego, Fabiola Traina
Chronic myeloid leukemia (CML) is a clonal myeloproliferative neoplasm of the hematopoietic stem cell characterized by presence of the oncoprotein BCR-ABL1, which have constitutive tyrosine kinase activity. BCR-ABL1 activation induces aurora kinase A (AURKA) and aurora kinase B (AURKB) expression, which are serine-threonine kinases that play an important function in chromosome alignment, segregation and cytokinesis during mitosis. Acquisition of resistance to tyrosine kinase inhibitors has emerged as a problem for CML patients and the identification of novel targets with an important contribution for CML phenotype is of interest...
September 2016: Leukemia Research
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