Results 41 to 50 of about 2,176,746 (281)

Stars in the USNO-B1 Catalog with Proper Motions Between 1.0 and 5.0 arcseconds per year

, 2005
This paper examines a subset of objects from the USNO-B1 catalogue with listed proper motions between 1.0 and 5.0 arcseconds per year. We look at the degree of contamination within this range of proper motions, and point out the major sources of spurious
Giclas H. L., Hog E., Stephen E. Levine, Voges W.   +3 more
core   +2 more sources

Point mutations of the P53 gene, human hepatocellular carcinoma and aflatoxins [PDF]

, 1993
The tumor suppressor p53 exerts important protective functions towards DNA-damaging agents. Its inactivation by allelic deletions or point mutations within the P53 gene as well as complex formation of wildtype p53 with cellular or viral proteins is a ...
Alexander L. Gerbes, Aoyama, Barak, Bressac, Bressac, Buetow, Caselmann, Challen, Colombo, Donehower, Fields, Finlay, Foster, Halevy, Hsu, Jenkins, Kastan, Kekulé, Kew, Kress, Lane, Laurent-Puig, Lilleberg, Livingstone, Ludlow, Malkin, Marshall, Meyer, Meyer, Mueller, Murakami, Nigro, Ozturk, Raycroft, Sarnow, Slagle, Srivastava, Sturzbecher, Taylor, Wolfgang H. Caselmann, Wollersheim   +40 more
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Dual PI3K/AKT and CDK4/6 inhibition reveals selective sensitivity in an SHH medulloblastoma stem cell model

Molecular Oncology, EarlyView.
Targeted therapy was evaluated in SHH medulloblastoma using neuroepithelial stem cell (NES) and tumor‐derived NES‐like (tNES) models in 2D monolayers and 3D spheroids. PI3K, AKT, and CDK4/6 inhibitors had minimal effects in NES but markedly reduced viability and growth and induced apoptosis in tNES cells, revealing distinct therapeutic vulnerabilities.
Monika Lukoseviciute, Madeleine Birgersson, Paolo Ceriani, Margareta Wilhelm, Ourania N Kostopoulou   +4 more
wiley   +1 more source

The telomeric protein AKTIP interacts with A- and B-type lamins and is involved in regulation of cellular senescence [PDF]

, 2016
AKTIP is a shelterin-interacting protein required for replication of telomeric DNA. Here, we show that AKTIP biochemically interacts with A- and B-type lamins and affects lamin A, but not lamin C or B, expression.
Astrologo, Letizia, Biroccio, Annamaria, Burla, Romina, Carcuro, Mariateresa, Crescenzi, Marco, Cundari, Enrico, D'Apice, Maria Rosaria, Fratini, Federica, Gatti, Maurizio, LA TORRE, Mattia, Lattanzi, Giovanna, Raffa, GRAZIA DANIELA, Raimondo, Domenico, Saggio, Isabella, Spitalieri, Paola   +14 more
core   +2 more sources

Hippo pathway at the crossroads of stemness and therapeutic resistance in breast cancer

Molecular Oncology, EarlyView.
Dysregulation of the Hippo pathway drives nuclear accumulation of YAP/TAZ, activating stemness‐related transcriptional programs that sustain breast cancer stemness and fuel therapeutic resistance across subtypes, underscoring Hippo signaling as a targetable vulnerability. Figure created and edited with BioRender.com.
Giulia Schiavoni, Antonella Palmese, Stefano Scalera, Laura Cipriani, Davide Mascolo, Patrizia Vici, Teresa Arcuri, Lorena Filomeno, Eriseld Krasniqi, Giovanni Blandino, Giulia Bon, Marcello Maugeri‐Saccà   +11 more
wiley   +1 more source

Conceitos do manejo integrado do fogo para promoção e estabilização de ecossistemas resilientes

Biodiversidade Brasileira, 2019
O fogo é um elemento de transformação e modelagem dos ambientes naturais, utilizado como ferramenta de manejo pelo homem há milhares de anos. O seu uso de forma controlada é indicado, e tem sido defendido por especialistas, para regiões limítrofes às ...
Daniel Almeida Rocha
doaj   +3 more sources

Hyperforin Exhibits Antigenotoxic Activity on Human and Bacterial Cells

Molecules, 2017
Hyperforin (HF), a substance that accumulates in the leaves and flowers of Hypericum perforatum L. (St. John’s wort), consists of a phloroglucinol skeleton with lipophilic isoprene chains. HF exhibits several medicinal properties and is mainly used as an
Petronela Imreova, Jana Feruszova, Stanislav Kyzek, Kristina Bodnarova, Martina Zduriencikova, Katarina Kozics, Pavel Mucaji, Eliska Galova, Andrea Sevcovicova, Eva Miadokova, Ivan Chalupa   +10 more
doaj   +1 more source

Molecular ions in the protostellar shock L1157-B1 [PDF]

, 2014
We perform a complete census of molecular ions with an abundance larger than 1e-10 in the protostellar shock L1157-B1 by means of an unbiased high-sensitivity survey obtained with the IRAM-30m and Herschel/HIFI. By means of an LVG radiative transfer code
Bachiller, R., Ceccarelli, C., Codella, C., Lefloch, B., Podio, L.   +4 more
core   +3 more sources

E2A selectively regulates TGF‐β–induced apoptosis in KRAS‐mutant non‐small cell lung cancer

Molecular Oncology, EarlyView.
Ability to induce apoptosis by TGF‐β is frequently lost in advanced lung adenocarcinoma despite intact TGF‐β signaling. We identify E2A as a mutant KRAS–dependent mediator of resistance to TGF‐β–induced apoptosis. TGF‐β induces E2A via SMAD3 in mutant KRAS cells, and E2A silencing restores apoptosis and enhances radiation response in cell lines ...
Sergei Chuikov, Shiva Krishna Katkam, Zhefan Wang, Venkateshwar G. Keshamouni   +3 more
wiley   +1 more source