Results 271 to 280 of about 3,866,695 (300)
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Current Opinion in Cell Biology, 2016
Accurate chromosomal DNA replication is fundamental for optimal cellular function and genome integrity. Replication perturbations activate DNA damage tolerance pathways, which are crucial to complete genome duplication as well as to prevent formation of deleterious double strand breaks.
Dana, Branzei, Ivan, Psakhye
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Accurate chromosomal DNA replication is fundamental for optimal cellular function and genome integrity. Replication perturbations activate DNA damage tolerance pathways, which are crucial to complete genome duplication as well as to prevent formation of deleterious double strand breaks.
Dana, Branzei, Ivan, Psakhye
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Photochemistry and Photobiology, 1988
Abstract— The direct photomodification of DNA by ultraviolet light or the photo‐induced addition of exogenous compounds to DNA components results in alterations of DNA structure ranging from subtle to profound. There are two consequences of these conformational changes.
F P, Gasparro, R M, Santella
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Abstract— The direct photomodification of DNA by ultraviolet light or the photo‐induced addition of exogenous compounds to DNA components results in alterations of DNA structure ranging from subtle to profound. There are two consequences of these conformational changes.
F P, Gasparro, R M, Santella
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Critical Reviews in Oncology/Hematology, 2020
Poly(ADP-ribose) polymerase (PARP) is a nuclear enzyme that plays a critical role in the repair of single-strand DNA damage via the base excision repair pathway. PARP inhibitors have substantial single-agent antitumor activity by inducing synthetic lethality.
Bulent, Cetin +2 more
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Poly(ADP-ribose) polymerase (PARP) is a nuclear enzyme that plays a critical role in the repair of single-strand DNA damage via the base excision repair pathway. PARP inhibitors have substantial single-agent antitumor activity by inducing synthetic lethality.
Bulent, Cetin +2 more
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Active DNA demethylation damages DNA
Science, 2022Active DNA demethylation maintains enhancer activity in nonproliferating cells but can damage ...
Isaac F, López-Moyado, Anjana, Rao
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DNA Damage and Polyploidization
2010A growing body of evidence indicates that polyploidization triggers chromosomal instability and contributes to tumorigenesis. DNA damage is increasingly being recognized for its roles in promoting polyploidization. Although elegant mechanisms known as the DNA damage checkpoints are responsible for halting the cell cycle after DNA damage, agents that ...
Chow, Jeremy Pak Hong +1 more
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Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2012
Carotenoids are among the best known antioxidant phytochemicals, and are widely believed to contribute to the health-promoting properties of fruits and vegetables. Investigations of the effects of carotenoids have been carried out at different levels: in cultured cells, in experimental animals, and in humans.
Amaya, Azqueta, Andrew R, Collins
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Carotenoids are among the best known antioxidant phytochemicals, and are widely believed to contribute to the health-promoting properties of fruits and vegetables. Investigations of the effects of carotenoids have been carried out at different levels: in cultured cells, in experimental animals, and in humans.
Amaya, Azqueta, Andrew R, Collins
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Current Opinion in Genetics & Development, 1996
DNA strand breaks are potentially mutagenic and must, therefore, be recognized and repaired. Recent work has identified DNA polymerase epsilon, Ku, and proteins such as DNA-PKcs, Mec1 and Tel1 as key players in DNA damage recognition pathways. Studies on these and other factors have provided important insights into the mechanisms of DNA repair and how ...
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DNA strand breaks are potentially mutagenic and must, therefore, be recognized and repaired. Recent work has identified DNA polymerase epsilon, Ku, and proteins such as DNA-PKcs, Mec1 and Tel1 as key players in DNA damage recognition pathways. Studies on these and other factors have provided important insights into the mechanisms of DNA repair and how ...
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Sperm DNA damage and its relation with leukocyte DNA damage
Reproductive Toxicology, 2010DNA fragmentation in human sperm has been related to endogenous and exogenous factors. Exogenous factors can also affect leukocyte DNA integrity. This study evaluated the relation between sperm DNA damage and leukocyte DNA integrity, as a predictor of exogenous factors.
Zahra, Babazadeh +5 more
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Benzophenone Photosensitized DNA Damage
Accounts of Chemical Research, 2012Although the carcinogenic potential of ultraviolet radiation is well-known, UV light may interact with DNA by direct absorption or through photosensitization by endogenous or exogenous chromophores. These chromophores can extend the "active" fraction of the solar spectrum to the UVA region and beyond, which means that photosensitizers increase the ...
Cuquerella Alabort, Maria Consuelo +3 more
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1991
Some of the background to radiation chemical studies of DNA damage is presented, followed by a review of measurements of such damage and its repair in mammalian cells. While most effort has been placed on the measurement of radiation-induced strand breaks (because assays can be used in the biologically relevant dose range), the radiation-altered bases ...
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Some of the background to radiation chemical studies of DNA damage is presented, followed by a review of measurements of such damage and its repair in mammalian cells. While most effort has been placed on the measurement of radiation-induced strand breaks (because assays can be used in the biologically relevant dose range), the radiation-altered bases ...
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