Results 71 to 80 of about 307,688 (344)

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

Molecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed, Kerstin Huebner, Katharina Erlenbach‐Wuensch, Chuanpit Hampel, Daniela Thalheim, Adriana Vial‐Roehe, Bodee Nutho, Susanne Merkel, Arndt Hartmann, Pithi Chanvorachote, Regine Schneider‐Stock   +10 more
wiley   +1 more source

Minimizing Star-spot Contamination of Exoplanet Transit Spectroscopy Using Alternate Normalization

The Astronomical Journal
Recently, M. H. Currie et al. (2023) simulated the detection of molecules in the atmospheres of temperate rocky exoplanets transiting nearby M-dwarf stars.
Drake Deming, Miles H. Currie, Victoria S. Meadows, Sarah Peacock   +3 more
doaj   +1 more source

CARBON-RICH RR LYRAE TYPE STARS

The Astrophysical Journal, 2009
We have derived CNO abundances in 12 RR Lyrae stars. Four stars show [C/Fe] near 0.0 and two stars show [C/Fe] = 0.52 and 0.65. Red giant branch stars, which are known to be the predecessors of RR Lyrae stars, generally show a deficiency of carbon due to proton captures during their evolution from the main sequence up the giant branch.
Wallerstein, George, Kovtyukh, V. V., Andrievsky, S. M.   +2 more
openaire   +2 more sources

Cis‐regulatory and long noncoding RNA alterations in breast cancer – current insights, biomarker utility, and the critical need for functional validation

Molecular Oncology, EarlyView.
The noncoding region of the genome plays a key role in regulating gene expression, and mutations within these regions are capable of altering it. Researchers have identified multiple functional noncoding mutations associated with increased cancer risk in the genome of breast cancer patients.
Arnau Cuy Saqués, Aracele Martinez‐Mendez, John Crown, Alex Eustace   +3 more
wiley   +1 more source

High resolution optical spectroscopy of IRAS 09425-6040 (=GLMP 260)

, 2006
We present high resolution optical spectroscopic observations of IRAS 09425-6040, a peculiar, extremely red, C-rich AGB star showing prominent O-rich dust features in its ISO infrared spectrum attributed to crystalline silicates.
A. Manchado, Abia, Abia, Abia, Barbuy, Blöcker, C. Abia, Cameron, Cayrel, Chan, D. A. García-Hernández, Deupree, Domínguez, Eriksson, Forestini, Fouque, Frost, García-Lario, Jorissen, Kwok, Lambert, Lorenz-Martins, Mazzitelli, Molster, Ohnaka, P. García-Lario, Querci, Rubén, Sackmann, Sylvester, Thévenin, Wasserburg, Waters, Yang, Zijlstra   +34 more
core   +1 more source

A search for galactic carbon stars [PDF]

International Astronomical Union Colloquium, 1988
The carbon star is one of the best probes for the galactic study; (1)it is intrinsically bright (Mbol = − 2 to − 6) especially in the red and infrared wavelength regions,(2)it has spectral features readily detectable on objective prism plates due to their strong carbon molecular bands,(3)it is an evolved star distributed abundantly (∼1 star per square ...
openaire   +1 more source

Methylation biomarkers can distinguish pleural mesothelioma from healthy pleura and other pleural pathologies

Molecular Oncology, EarlyView.
We developed and validated a DNA methylation–based biomarker panel to distinguish pleural mesothelioma from other pleural conditions. Using the IMPRESS technology, we translated this panel into a clinically applicable assay. The resulting two classifier models demonstrated excellent performance, achieving high AUC values and strong diagnostic accuracy.
Janah Vandenhoeck, Nele De Meulenaere, Thomas Vanpoucke, Joe Ibrahim, Dieter Peeters, Suresh Krishan Yogeswaran, Wen Wen, Paul Van Schil, Jeroen M. H. Hendriks, Jo Raskin, Jan van Meerbeeck, Guy Van Camp, Ken Op de Beeck   +12 more
wiley   +1 more source

Carbon burning in intermediate mass primordial stars

, 2004
The evolution of a zero metallicity 9 M_s star is computed, analyzed and compared with that of a solar metallicity star of identical ZAMS mass. Our computations range from the main sequence until the formation of a massive oxygen-neon white dwarf ...
Fujimoto, M. Y., Garcia-Berro, E., Gil-Pons, P., Suda, T.   +3 more
core   +1 more source

Model Dust Envelopes for Asymptotic Giant Branch Stars. Carbon Stars. II. Carbon Stars

Journal of Astronomy and Space Sciences, 1995
We have modeled the dust envelopes around carbon stars with close attention to the evolution of the structure of the dust shells. We use various dust density distributions to take account the effect of the superwind due to the helium shell flash by adding a density increased region. Depending on the position and quality of the density increased region,
Kyung-Won Suh, Hee-Joung Kwoun
openaire   +1 more source

The Brightest Carbon Stars

, 1997
It is currently accepted that Hot-Bottom-Burning (HBB) in intermediate-mass asymptotic giant branch (AGB) stars prevents the formation of C~stars. Nevertheless, we present in this paper the results of some detailed evolutionary calculations which show that even with HBB we obtain C~stars at the highest luminosities reached on the AGB.
Frost, Cheryl, Cannon, Robert, Lattanzio, John, Wood, Peter, Forestini, Manuel   +4 more
openaire   +2 more sources