نتایج جستجو برای: nras

تعداد نتایج: 2055  

2013
Yeong Hwan Ko Myung Sub Kim Wook Park Jae Su Yu

We reported well-integrated zinc oxide (ZnO) nanorod arrays (NRAs) on conductive textiles (CTs) and their structural and optical properties. The integrated ZnO NRAs were synthesized by cathodic electrochemical deposition on the ZnO seed layer-coated CT substrate in ultrasonic bath. The ZnO NRAs were regularly and densely grown as well as vertically aligned on the overall surface of CT substrate...

2017
Jing-Dong Zhou Dong-Ming Yao Xi-Xi Li Ting-Juan Zhang Wei Zhang Ji-Chun Ma Hong Guo Zhao-Qun Deng Jiang Lin Jun Qian

The prognostic value of RAS mutations has been systematically investigated in acute myeloid leukemia (AML). However, clinical significance of RAS expressions in AML remains poorly determined. To explore the clinical significance, we analyzed KRAS and NRAS expressions in 143 de novo AML patients by real-time quantitative PCR. KRAS and NRAS expressions were significantly up-regulated in AML patie...

Journal: :Cancer research 2003
Frank Cruz Brian P Rubin David Wilson Ajia Town Arin Schroeder Andrea Haley Troy Bainbridge Michael C Heinrich Christopher L Corless

Uveal melanoma (UM) and cutaneous melanoma (CM) differ significantly in their epidemiological, clinical, immunophenotypical, and cytogenetic features, but the molecular basis for these differences has not been delineated. CMs frequently harbor an activating mutation in either NRAS or the RAS-regulated kinase BRAF, suggesting that either of these oncogenes may increase signaling through the mito...

2015
Igor Vujic Martina Sanlorenzo Christian Posch Rosaura Esteve-Puig Adam J. Yen Andrew Kwong Aaron Tsumura Ryan Murphy Klemens Rappersberger Susana Ortiz-Urda

Attempts to directly block the mutant neuroblastoma rat sarcoma oncogene (NRAS) protein, a driving mutation in many cancer types, have been unsuccessful. Current treatments focus on inhibition of different components of NRAS' two main downstream cascades: PI3K/AKT/mTOR and MAPK. Here we test a novel dual therapy combination of metformin and trametinib on a panel of 16 NRAS mutant cell lines, in...

2016
Xin Gao Xiangxuan Liu Xuanjun Wang Zuoming Zhu Zheng Xie Jun Li

Photocatalysis technology could utilize solar energy to degrade many toxic pollutants and provides possibility to deal with unsymmetrical dimethylhydrazine (UDMH) wastewater with less energy consumption. In this study, well-aligned TiO2 nanorod arrays (TiO2 NRAs) were grown directly on transparent conductive glass (FTO) via a hydrothermal method, and TiO2 NRAs/CdS heterostructure films were pre...

2017
Laura Dean

Variations in NRAS, also an oncogene, are found in up to 30% of all malignancies and in approximately 15-20% of melanomas. NRAS variants activate MAPK and have been implicated in in acquired resistance to BRAF inhibitors. Vemurafenib’s label warns that one adverse effect associated with therapy may be the progression of pre-existing chronic myelomonocytic leukemia with NRAS mutation (3). Other ...

Journal: :Journal of Investigative Dermatology 2016

2006
Carlotta Petti Alessandra Molla Claudia Vegetti Soldano Ferrone Andrea Anichini Marialuisa Sensi

Activating mutations in BRAF and NRAS oncogenes in human melanomas are mutually exclusive. This finding has suggested an epistatic relationship but is consistent even with synthetic lethality. To evaluate the latter possibility, a mutated NRAS oncogene was expressed, under a constitutive or a doxycycline-regulated promoter, in a metastatic melanoma clone (clone 21) harboring an activated BRAF o...

2016
Ha Linh Vu Sheera Rosenbaum Claudia Capparelli Timothy J. Purwin Michael A. Davies Adam C. Berger Andrew E. Aplin

Activating mutations in neuroblastoma RAS viral oncogene homolog (NRAS) are frequent driver events in cutaneous melanoma. NRAS is a guanosine triphosphate-binding protein whose most well-characterized downstream effector is RAF, leading to activation of mitogen-activated protein kinase (MEK)-extracellular signal-regulated protein kinase 1/2 signaling. Although there are no Food and Drug Adminis...

2017
Kiyoko Takane Kiwamu Akagi Masaki Fukuyo Koichi Yagi Tadatoshi Takayama Atsushi Kaneda

Sporadic colorectal cancer (CRC) is classified into several molecular subtypes. We previously established two groups of DNA methylation markers through genome-wide DNA methylation analysis to classify CRC into distinct subgroups: high-, intermediate-, and low-methylation epigenotypes (HME, IME, and LME, respectively). HME CRC, also called CpG island methylator phenotype (CIMP)-high CRC, shows m...

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