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https://www.readbyqxmd.com/read/28806841/genetic-polymorphisms-as-predictive-markers-of-response-to-growth-hormone-therapy-in-children-with-growth-hormone-deficiency
#1
Anna Maria Jung, Martin Zenker, Christina Lißewski, Denny Schanze, Stefan Wagenpfeil, Tilman Robert Rohrer
Objective Growth hormone (GH) deficiency (GHD) is commonly treated with recombinant human GH (rhGH). Individual response to rhGH therapy varies widely and there is evidence that variations in growth-related genes, e. g. the GH receptor (GHR) gene, may impact treatment response. We aimed to identify genetic polymorphisms which could serve as predictive markers of response to rhGH therapy. Methods We conducted a genetic analysis of single nucleotide polymorphisms (SNPs) and the GHR exon 3 deletion in 101 paediatric GHD patients receiving rhGH...
August 14, 2017: Klinische Pädiatrie
https://www.readbyqxmd.com/read/28806397/mdm2-promotes-cdc25c-protein-degradation-and-delays-cell-cycle-progression-through-the-g2-m-phase
#2
L E Giono, L Resnick-Silverman, L A Carvajal, S St Clair, J J Manfredi
Upon different types of stress, the gene encoding the mitosis-promoting phosphatase Cdc25C is transcriptionally repressed by p53, contributing to p53's enforcement of a G2 cell cycle arrest. In addition, Cdc25C protein stability is also decreased following DNA damage. Mdm2, another p53 target gene, encodes a ubiquitin ligase that negatively regulates p53 levels by ubiquitination. Ablation of Mdm2 by siRNA led to an increase in p53 protein and repression of Cdc25C gene expression. However, Cdc25C protein levels were actually increased following Mdm2 depletion...
August 14, 2017: Oncogene
https://www.readbyqxmd.com/read/28806394/smggds-is-a-transient-nucleolar-protein-that-protects-cells-from-nucleolar-stress-and-promotes-the-cell-cycle-by-regulating-dream-complex-gene-expression
#3
P Gonyo, C Bergom, A C Brandt, S-W Tsaih, Y Sun, T M Bigley, E L Lorimer, S S Terhune, H Rui, M J Flister, R M Long, C L Williams
The chaperone protein and guanine nucleotide exchange factor SmgGDS (RAP1GDS1) is a key promoter of cancer cell proliferation and tumorigenesis. SmgGDS undergoes nucleocytoplasmic shuttling, suggesting that it has both cytoplasmic and nuclear functions that promote cancer. Previous studies indicate that SmgGDS binds cytoplasmic small GTPases and promotes their trafficking to the plasma membrane. In contrast, little is known about the functions of SmgGDS in the nucleus, or how these nuclear functions might benefit cancer cells...
August 14, 2017: Oncogene
https://www.readbyqxmd.com/read/28806172/mobilization-of-line-1-retrotransposons-is-restricted-by-tex19-1-in-mouse-embryonic-stem-cells
#4
Marie MacLennan, Marta García-Cañadas, Judith Reichmann, Elena Khazina, Gabriele Wagner, Christopher J Playfoot, Carmen Salvador-Palomeque, Abigail R Mann, Paula Peressini, Laura Sanchez, Karen Dobie, David Read, Chao-Chun Hung, Ragnhild Eskeland, Richard R Meehan, Oliver Weichenrieder, Jose Luis García-Pérez, Ian R Adams
Mobilization of retrotransposons to new genomic locations is a significant driver of mammalian genome evolution, but these mutagenic events can also cause genetic disorders. In humans, retrotransposon mobilization is mediated primarily by proteins encoded by LINE-1 (L1) retrotransposons, which mobilize in pluripotent cells early in development. Here we show that TEX19.1, which is induced by developmentally programmed DNA hypomethylation, can directly interact with the L1-encoded protein L1-ORF1p, stimulate its polyubiquitylation and degradation, and restrict L1 mobilization...
August 14, 2017: ELife
https://www.readbyqxmd.com/read/28805820/prostate-cancer-associated-spop-mutations-confer-resistance-to-bet-inhibitors-through-stabilization-of-brd4
#5
Xiangpeng Dai, Wenjian Gan, Xiaoning Li, Shangqian Wang, Wei Zhang, Ling Huang, Shengwu Liu, Qing Zhong, Jianping Guo, Jinfang Zhang, Ting Chen, Kouhei Shimizu, Francisco Beca, Mirjam Blattner, Divya Vasudevan, Dennis L Buckley, Jun Qi, Lorenz Buser, Pengda Liu, Hiroyuki Inuzuka, Andrew H Beck, Liewei Wang, Peter J Wild, Levi A Garraway, Mark A Rubin, Christopher E Barbieri, Kwok-Kin Wong, Senthil K Muthuswamy, Jiaoti Huang, Yu Chen, James E Bradner, Wenyi Wei
The bromodomain and extraterminal (BET) family of proteins comprises four members-BRD2, BRD3, BRD4 and the testis-specific isoform BRDT-that largely function as transcriptional coactivators and play critical roles in various cellular processes, including the cell cycle, apoptosis, migration and invasion. BET proteins enhance the oncogenic functions of major cancer drivers by elevating the expression of these drivers, such as c-Myc in leukemia, or by promoting the transcriptional activities of oncogenic factors, such as AR and ERG in prostate cancer...
August 14, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28805807/notch-signaling-pathway-and-gene-expression-profiles-during-early-in-vitro-differentiation-of-liver-derived-mesenchymal-stromal-cells-to-osteoblasts
#6
Ksymena Urbanek, Marta Lesiak, Daniel Krakowian, Halina Koryciak-Komarska, Wirginia Likus, Piotr Czekaj, Damian Kusz, Aleksander L Sieroń
Notch signaling is a key signaling pathway for cell proliferation and differentiation. Therefore, we formulated a working hypothesis that Notch signaling can be used to detect early osteoblastic differentiation of mesenchymal stromal cells. Changes in expression and distribution of Notch 1, 2, 3, and Delta1 in the cytoplasm and nuclei of rat liver-derived mesenchymal stromal cells differentiating into osteoblasts were investigated, together with the displacement of intracellular domains (ICDs) of the receptors...
August 14, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28805696/licochalcone-a-inhibits-the-proliferation-of-human-lung-cancer-cell-lines-a549-and-h460-by-inducing-g2-m-cell-cycle-arrest-and-er-stress
#7
Chenyu Qiu, Tingting Zhang, Wenxin Zhang, Lina Zhou, Bin Yu, Wei Wang, Zhihong Yang, Zhiguo Liu, Peng Zou, Guang Liang
Licochalcone A (LicA), a flavonoid isolated from the famous Chinese medicinal herb Glycyrrhiza uralensis Fisch, has wide spectrum of pharmacological activities. In this study, the anti-cancer effects and potential mechanisms of LicA in non-small cell lung cancer (NSCLC) cells were studied. LicA decreased cell viability and induced apoptosis in a dose-dependent manner in NSCLC cells. LicA inhibited lung cancer cells growth by blocking cell cycle progression at the G2/M transition and inducing apoptosis. LicA treatment decreased the expression of MDM2, Cyclin B1, Cdc2 and Cdc25C in H460 and A549 cancer cell lines...
August 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28805675/changing-stem-cell-dynamics-during-papillomavirus-infection-potential-roles-for-cellular-plasticity-in-the-viral-lifecycle-and-disease
#8
REVIEW
Katerina Strati
Stem cells and cellular plasticity are likely important components of tissue response to infection. There is emerging evidence that stem cells harbor receptors for common pathogen motifs and that they are receptive to local inflammatory signals in ways suggesting that they are critical responders that determine the balance between health and disease. In the field of papillomaviruses stem cells have been speculated to play roles during the viral life cycle, particularly during maintenance, and virus-promoted carcinogenesis but little has been conclusively determined...
August 12, 2017: Viruses
https://www.readbyqxmd.com/read/28805635/mosquito-specific-and-mosquito-borne-viruses-evolution-infection-and-host-defense
#9
REVIEW
Rebecca Halbach, Sandra Junglen, Ronald P van Rij
Recent virus discovery programs have identified an extensive reservoir of viruses in arthropods. It is thought that arthropod viruses, including mosquito-specific viruses, are ancestral to vertebrate-pathogenic arboviruses. Mosquito-specific viruses are restricted in vertebrate cells at multiple levels, including entry, RNA replication, assembly, and by the inability to replicate at high temperatures. Moreover, it is likely that the vertebrate immune system suppresses replication of these viruses. The evolution from single to dual-host tropism may also require changes in the course of infection in the mosquito host...
August 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28805486/cop1-integrates-light-signals-to-rop2-for-cell-cycle-activation
#10
Wenguo Cai, Xiaojuan Li, Yanlin Liu, Yaowei Wang, Yue Zhou, Tongda Xu, Yan Xiong
The exquisite regulation of cell division at the shoot apex according to the external environmental cues enables plants to adapt the ever-changing environment. We have recently shown that light direct signaling and carbohydrate (sugar) energy signaling are both essential for the activation of cell division at the shoot apex. Light is converted to auxin signal to activate small GTPase 2 (ROP2). Subsequently, the activated ROP2 directly interacts with Target of Rapamycin (TOR) protein kinase, a pivotal regulator of cell division, to promotes its kinase activity...
August 14, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28805086/brentuximab-vedotin-therapy-for-cd30-positive-cutaneous-t-cell-lymphoma-a-targeted-approach-to-management
#11
Julia J Scarisbrick
CD30-positive primary cutaneous T-cell lymphoma (CTCL) includes mycosis fungoides, anaplastic large-cell lymphoma and lymphomatoid papulosis type A. Brentuximab vedotin (BV) consists of an antibody targeting CD30 with a protease-cleavable linker to vedotin. CD30 binding allows internalization of BV inducing cell-cycle arrest and apoptosis. Response rates >75% with manageable adverse effects in refractory Hodgkin lymphoma and systemic anaplastic large-cell lymphoma led to accelerated approval for both. Phase II studies in CD30-expressing CTCL followed and showed similar efficacy, which was ratified in a Phase III trial of BV versus physician's choice (methotrexate or bexarotene) showing significant improved responses without increase in severe adverse effects although peripheral neuropathy is frequent...
August 14, 2017: Future Oncology
https://www.readbyqxmd.com/read/28805049/safety-reinforced-succinonitrile-based-electrolyte-with-interfacial-stability-for-high-performance-lithium-batteries
#12
Qingqing Zhang, Kai Liu, Fei Ding, Wei Li, Xingjiang Liu, Jinli Zhang
Different contents of fluoroethylene carbonate (FEC) as co-solvent is added into succinonitrile (SN) solution to form a novel electrolyte for lithium batteries. The SN-based electrolyte with 20 wt% FEC exhibits the most favorable properties involving the good thermal stability, wide electrochemical window and high ionic conductivity. Comparing with the commercial electrolyte, the 20% FEC-SN electrolyte demonstrates the advantage of high safety and excellent interfacial compatibility with lithium due to the form of compact and smooth solid electrolyte interphase layer on the anode...
August 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28804952/evaluation-of-cytotoxicity-of-propofol-and-its-related-mechanism-in-glioblastoma-cells-and-astrocytes
#13
Shu-Shong Hsu, Chung-Ren Jan, Wei-Zhe Liang
Propofol (2,6-diisopropylphenol), one of the extensively and commonly used anesthetic agents, has been shown to affect the biological behavior of various models. Previous researches have shown that propofol-induced cytotoxicity might cause anticancer effect in different cells. However, the mechanisms underlying the effect of propofol on cytotoxicity is still elusive in human glioblastoma cells. The aims of this study were to evaluate effects of propofol on cytotoxicity, cell cycle distribution and ROS production, and establish the relationship between oxidative stress and cytotoxicity in GBM 8401 human glioblastoma cells and DI TNC1 rat astrocytes...
August 14, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28804666/primary-small-cell-carcinoma-of-the-hypopharynx-a-report-of-two-cases-and-review-of-nine-additional-cases
#14
Mitsuhiko Nakahira, Kiyomi Kuba, Satoko Matsumura, Masashi Sugasawa
OBJECTIVE: Two patients with primary small cell carcinoma (SmCC) of the hypopharynx, an extremely rare site for the occurrence of SmCC, are reported and nine additional well-documented cases are reviewed. METHODS: Case report and review of the literature concerning primary SmCC of the hypopharynx. RESULTS: On the final analysis, we reviewed eleven cases of primary SmCC of the hypopharynx. The tumors contained mixed elements of SmCC and squamous cell carcinoma (SCC) in six (55%) of eleven patients...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28804628/from-saccharomyces-cerevisiae-to-human-the-important-gene-co-expression-modules
#15
Wei Liu, Li Li, Hua Ye, Haiwei Chen, Weibiao Shen, Yuexian Zhong, Tian Tian, Huaqin He
Network-based systems biology has become an important method for analyzing high-throughput gene expression data and gene function mining. Yeast has long been a popular model organism for biomedical research. In the current study, a weighted gene co-expression network analysis algorithm was applied to construct a gene co-expression network in Saccharomyces cerevisiae. Seventeen stable gene co-expression modules were detected from 2,814 S. cerevisiae microarray data. Further characterization of these modules with the Database for Annotation, Visualization and Integrated Discovery tool indicated that these modules were associated with certain biological processes, such as heat response, cell cycle, translational regulation, mitochondrion oxidative phosphorylation, amino acid metabolism and autophagy...
August 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28804605/up-regulation-of-mir-21-decreases-chemotherapeutic-effect-of-dendrosomal-curcumin-in-breast-cancer-cells
#16
Mohammad Javad Dehghan Esmatabadi, Baharak Farhangi, Maryam Montazeri, Hamideh Monfared, Roohollah Nakhaei Sistani, Majid Sadeghizadeh
OBJECTIVES: Despite the good results of anticancer activities by curcumin, there are some hurdles that limit the use of curcumin as an anticancer agent. Many methods were examined to overcome this defect like the use of the dendrosomal curcumin (DNC). There is increasing evidence that miRNAs play important roles in biological processes. In this study, we focus on the roles of microRNA-21 in the anti-cancer effects of DNC in breast cancer. MATERIALS AND METHODS: Also, we have used different methods such as MTT, apoptosis, cell cycle analysis, transwell migration assay and RT-PCR to find out more...
April 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28804566/microrna-93-inhibits-apoptosis-and-promotes-proliferation-invasion-and-migration-of-renal-cell-carcinoma-achn-cells-via-the-tgf-%C3%AE-smad-signaling-pathway-by-targeting-runx3
#17
Li-Jie Liu, Jian-Jun Yu, Xiao-Lin Xu
We investigated the ability of microRNA-93 (miR-93) to influence proliferation, invasion, migration, and apoptosisofrenal cell carcinoma (RCC) cells via transforming growth factor-β/solvated metal atom dispersed (TGF-β/Smad) signaling by targeting runt-related transcription factor 3 (RUNX3). RCC tissues with corresponding adjacent normal tissues were collected from 249 RCC patients. And normal renal tissues were collected from patients without RCC who received nephrectomy. The RCC cell line ACHN was treated with miR-93 mimic, mimic-negative control (NC), miR-93 inhibitor, inhibitor-NC, and miR-93 inhibitor + small interfering RNA (siRNA) against RUNX3 (si-RUNX3)...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28804562/premature-exhaustion-of-mesenchymal-stromal-cells-from-myelodysplastic-syndrome-patients
#18
Yanbin Pang, Chengxin Deng, Suxia Geng, Jianyu Weng, Peilong Lai, Pengjun Liao, Lingji Zeng, Zesheng Lu, Jing Zhang, Xin Du
Myelodysplastic syndrome (MDS) predominantly occurs in aging people. Over the past decades, the cellular and molecular pathologies of MDS cells have been intensively investigated. However, how the bone marrow stromal niches are altered during MDS development remains elusive. In this study, we attempted to isolate and characterize mesenchymal stromal cells (MSCs) from 30 MDS patients. We observed that only 9/30 bone marrow aspirations from MDS patients successfully formed a monolayer in vitro, while 17/17 bone marrow aspirations from normal donors (median age 45 years, range: 22-73 years) succeeded in this process...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28804543/light-of-dna-alkylating-agents-in-castration-resistant-prostate-cancer-cells-a-novel-mixed-egfr-dna-targeting-combi-molecule
#19
Guan-Can Liang, Hao-Feng Zheng, Yan-Xiong Chen, Teng-Cheng Li, Wei Liu, You-Qiang Fang
OBJECTIVE: The mechanism underlying the therapeutic effects of combi-molecule JDF12 on prostate cancer (PCa) DU145 cells remains still unclear. This study aimed to investigate the proteomic profile after JDF12 treatment in DU145 cells by comparing with that in Iressa treated cells and untreated cells. METHODS: MTT was used to evaluate drug cytotoxicity, DAPI staining was done to assess apoptosis of cells, and flow cytometry was used to analyze cell cycle. iTRAQ and qPCR were employed to obtain the proteomic profiles of JDF12 treated, Iressa treated, and untreated DU145 cells, and validate the expression of selected differentially expressed proteins, respectively...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28804541/a-potential-role-for-the-hippo-pathway-protein-yap-in-controlling-proliferation-cell-cycle-progression-and-autophagy-in-bcpap-and-ki-thyroid-papillary-carcinoma-cells
#20
Zeming Liu, Wen Zeng, Shi Wang, Xiangwang Zhao, Yawen Guo, Pan Yu, Xingjie Yin, Chunping Liu, Tao Huang
PURPOSE: The aims were two-fold: first, to examine the expression of Yes-activated protein (YAP), a key Hippo pathway regulator, in clinical thyroid papillary carcinoma samples and to correlate this with clinicopathological parameters; second, to explore the role of YAP in regulating cell growth and division in vitro. METHODS AND RESULTS: YAP expression was determined by immunohistochemistry of clinical thyroid papillary carcinoma tissue microarrays and expression was correlated with clinicopathological parameters...
2017: American Journal of Translational Research
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