Results 51 to 60 of about 132,317 (296)

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Stimulated Emission from InAs (GaAs) Monolayers Stacks Embedded in Al0.33Ga0.67As Ective Region

Advances in Electrical and Electronic Engineering, 2002
Our study is focused on the optical and electronic properties of InAs (GaAs) monolayers embedded in Al0.33GA0.67As barrier layers investigated by temperature dependencies of electroluminescence spectra.
Dusan Pudis, Jaroslav Kovac, Jaroslav Kovac, Jan Jakabovic, Andrej Vincze, Sieler Gottschalch, Gabriele Benndorf, Bernd Rheinländer, Reinhard Schwabe   +8 more
doaj  

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

Enhancement of stimulated emission in 12-fold symmetric quasi-crystals [PDF]

, 2007
In this paper, we investigate the stimulated emission in a 12-fold symmetric quasiperiodic photonic crystal. The stimulated emission peaks in the quasiperiodic photonic crystal are more abundant and stronger than those in a periodic crystal.
Chen HD (Chen Hongda), Xu, XS, Chinese Acad Sci, Inst Semicond, State Key Lab Integrat Opt Electron, Beijing 100083, Peoples R China. 电子邮箱地址: xsxu@red.semi.ac.cn, Zhang DZ (Zhang Daozhong), Xu XS (Xu Xingsheng)   +3 more
core  

Spectator exciton effects in nanocrystals III: Unveiling the stimulated emission cross section in quantum confined CsPbBr3 nanocrystals [PDF]

Quantifying stimulated emission in semiconductor nanocrystals (NCs) remains challenging due to masking of its effects on pump-probe spectra by excited state absorption and ground state bleaching signals.
Yichao, Cai, Sanford, Ruhman, Lioz, Etgar, Tal, Binyamin, Apurba, De, Soumyadip, Bhunia   +5 more
core   +1 more source

Stimulated emission depletion microscopy on lithographic nanostructures [PDF]

, 2005
Stimulated emission, predicted by Albert Einstein in 1917, not only prepared the grounds for the invention of the laser, but also for a far-field fluorescence microscopy with diffraction-unlimited resolution.
Salditt, Tim, Salditt, T., Seeger, J., Hell, S. W., Hell, S., Westphal, Volker, Seegers, Joachim, Hell, Stefan, Westphal, V.   +8 more
core   +1 more source

Ultraviolet Stimulated Emission from Sol-Gel Spin Coated ZnO Thin Films

Advances in Materials Science and Engineering, 2017
Low cost ultraviolet stimulated emission has been generated using optical excitation of ZnO thin films deposited by sol-gel spin coating on n+ As-doped 100 Si-substrate.
Ahmed S. Razeen, A.-S. Gadallah, M. M. El-Nahass   +2 more
doaj   +1 more source

Técnica de bombeio e prova para medidas de absorção de estado excitado e de emissão estimulada, em materiais sólidos dopados com íons terras raras Pump-probe technique for excited state absorption and stimulated emission measurements in rare earth ion doped solid materials

Química Nova, 2008
Rare earth ion doped solid state materials are the most important active media of near-infrared and visible lasers and other photonic devices. In these ions, the occurrence of Excited State Absorptions (ESA), from long lived electronic levels, is ...
Andrea Simone Stucchi de Camargo, Luiz Antonio de Oliveira Nunes   +1 more
doaj   +1 more source

Polarized Stimulated Emission of 2D Ensembles of Plasmonic Nanolasers

Advanced Photonics Research, 2021
Plasmonic nanolasers produce coherent light with wavelengths on a scale similar to their own or larger. In the past decade they have attracted intense interest, particularly from the emerging areas of integrated photonic circuits and biomedicine. Despite
Nikita Toropov, Aisylu Kamalieva, Anton Starovoytov, Sajid Zaki, Tigran Vartanyan   +4 more
doaj   +1 more source

Translating whole‐genome doubling into precision medicine in cancer

Molecular Oncology, EarlyView.
Whole‐genome doubling creates a WGD‐positive tumor state characterized by persistent chromosomal instability, karyotypic diversification, and cellular stress. These same biological pressures drive aggressive tumor evolution while exposing therapeutic vulnerabilities, providing a rationale for WGD‐informed precision medicine. Whole‐genome doubling (WGD)
Sejung Lee, Junghyeok Lim, Jinhyuk Bhin
wiley   +1 more source