Results 61 to 70 of about 163,016 (283)

Visualisation of γH2AX foci caused by heavy ion particle traversal; distinction between core track versus non-track damage.

PLoS ONE, 2013
Heavy particle irradiation produces complex DNA double strand breaks (DSBs) which can arise from primary ionisation events within the particle trajectory.
Nakako Izumi Nakajima, Holly Brunton, Ritsuko Watanabe, Amruta Shrikhande, Ryoichi Hirayama, Naruhiro Matsufuji, Akira Fujimori, Takeshi Murakami, Ryuichi Okayasu, Penny Jeggo, Atsushi Shibata   +10 more
doaj   +1 more source

Proton Irradiation Increases the Necessity for Homologous Recombination Repair Along with the Indispensability of Non-Homologous End Joining

Cells, 2020
Technical improvements in clinical radiotherapy for maximizing cytotoxicity to the tumor while limiting negative impact on co-irradiated healthy tissues include the increasing use of particle therapy (e.g., proton therapy) worldwide.
Klaudia Szymonowicz, Adam Krysztofiak, Jansje van der Linden, Ajvar Kern, Simon Deycmar, Sebastian Oeck, Anthony Squire, Benjamin Koska, Julian Hlouschek, Melanie Vüllings, Christian Neander, Jens T. Siveke, Johann Matschke, Martin Pruschy, Beate Timmermann, Verena Jendrossek   +15 more
doaj   +1 more source

Risks from low dose/dose rate radiation: what an understanding of DNA damage response mechanisms can tell us [PDF]

, 2009
The DNA damage response (DDR) mechanisms represent a vital line of defense against exogenous and endogenous DNA damage to enhance two distinct outcomes, survival and the maintenance of genomic stability. The latter is critical for cancer avoidance.
Jeggo, Peggy A.
core   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Stress-induced DNA Damage biomarkers: Applications and limitations

Frontiers in Chemistry, 2015
A variety of environmental stresses like chemicals, UV and ionizing radiation and organism’s endogenous processes like replication stress and metabolism can lead to the generation of reactive oxygen and nitrogen species (ROS/RNS) that can attack cellular
Zacharenia eNikitaki, christine E Hellweg, Alexandros G Georgakilas, Jean-Luc eRAVANAT, Jean-Luc eRAVANAT   +4 more
doaj   +1 more source

Beam Energy Considerations for Gold Nano-Particle Enhanced Radiation Treatment [PDF]

, 2009
Purpose: A novel approach using nano technology enhanced radiation modalities is investigated. The proposed methodology uses antibodies labeled with organically inert metals with a high atomic number.
Heuvel, F. Van den, Locquet, J. P., Nuyts, S.   +2 more
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

UVA-induced DNA double-strand breaks result from the repair of clustered oxidative DNA damages [PDF]

Nucleic Acids Research, 2012
UVA (320-400 nm) represents the main spectral component of solar UV radiation, induces pre-mutagenic DNA lesions and is classified as Class I carcinogen. Recently, discussion arose whether UVA induces DNA double-strand breaks (dsbs). Only few reports link the induction of dsbs to UVA exposure and the underlying mechanisms are poorly understood.
Greinert, R., Volkmer, B., Henning, S., Breitbart, E. W., Greulich, K. O., Cardoso, M. C., Rapp, Alexander   +6 more
openaire   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source