Results 61 to 70 of about 5,488 (166)

hTERT Increases TRF2 to Induce Telomere Compaction and Extend Cell Replicative Lifespan

open access: yesAging Cell, Volume 24, Issue 8, August 2025.
In contrast to the dogma that a subset of short telomeres initiates senescence, hTERT variants unable to maintain telomere length block senescence by stabilizing TRF2 via inhibiting upstream E3 ubiquitin ligases. This noncanonical hTERT function also compacts telomeres and blocks senescence‐associated DNA damage signaling. Cancer cells expressing hTERT
Nancy Adam   +15 more
wiley   +1 more source

DNA DSB repair pathway choice: an orchestrated handover mechanism [PDF]

open access: yes, 2014
DNA double strand breaks (DSBs) are potential lethal lesions but can also lead to chromosome rearrangements, a step promoting carcinogenesis. DNA non-homologous end-joining (NHEJ) is the major DSB rejoining process and occurs in all cell cycle stages ...
A Kakarougkas   +5 more
core   +1 more source

EccDNA‐Driven VPS41 Amplification Alleviates Genotoxic Stress via Lysosomal KAI1 Degradation

open access: yesAdvanced Science, Volume 12, Issue 25, July 3, 2025.
Following ionizing radiation, eccDNA‐mediated VPS41 amplification slightly increases its expression but fails to prevent apoptosis. Introducing exogenous eccDNA or VPS41 enhances VPS41‐KAI1 interaction, promoting lysosomal degradation of KAI1. This process inhibits apoptotic signaling, enhancing cell survival and resistance to radiation‐induced damage.
Bin Shi   +12 more
wiley   +1 more source

Twisted Tales: Insights into Genome Diversity of Ciliates Using Single-Cell 'Omics. [PDF]

open access: yes, 2018
The emergence of robust single-cell 'omics techniques enables studies of uncultivable species, allowing for the (re)discovery of diverse genomic features.
Katz, Laura A   +4 more
core   +1 more source

Therapies for Mitochondrial Disease: Past, Present, and Future

open access: yesJournal of Inherited Metabolic Disease, Volume 48, Issue 4, July 2025.
ABSTRACT Mitochondrial disease is a diverse group of clinically and genetically complex disorders caused by pathogenic variants in nuclear or mitochondrial DNA‐encoded genes that disrupt mitochondrial energy production or other important mitochondrial pathways. Mitochondrial disease can present with a wide spectrum of clinical features and can often be
Megan Ball   +5 more
wiley   +1 more source

Enhancer Extrachromosomal Circular DNA ANKRD28 Elicits Drug Resistance via POU2F2‐Mediated Transcriptional Network in Multiple Myeloma

open access: yesAdvanced Science, Volume 12, Issue 21, June 5, 2025.
Enhancer eccANKRD28‐manipulated MM cells have been demonstrated to facilitate drug resistance and promote MM progression by activating the key transcription factor, POU2F2. POU2F2 interacts with sequence‐specific eccANKRD28 as well as RUNX1 and RUNX2 motifs to form the protein complex, which activates the promoter of oncogenes (IRF4, JUNB, IKZF3, et al.
Binzhen Chen   +12 more
wiley   +1 more source

Heteroduplex analysis of tra delta f' plasmids and the mechanism of their formation [PDF]

open access: yes, 1977
Four tra delta FargG+ plasmids, derived from matings between Hfr AB312 and a recA recipient, have been shown to have deletions of at least 50% of the F genome, including the region in which the tra genes map.
Clark, Alvin J.   +2 more
core   +1 more source

DNA damage response pathway is a promising therapeutic target for extrachromosomal DNA‐positive tumours

open access: yes
Clinical and Translational Medicine, Volume 15, Issue 11, November 2025.
Congcong Tian, Haiyun Gan
wiley   +1 more source

DNA Synthesis, Methylation and Degradation During Conjugation in \u3cem\u3eTetrahymena thermophila\u3c/em\u3e [PDF]

open access: yes, 1985
We have investigated the timing of DNA synthesis, methylation and degradation during macronuclear development in the ciliate, Tetrahymena thermophila. DNA synthesis was first detected in the anlagen early in macronuclear development, but the majority of ...
Harrison, Gail Singer   +1 more
core   +1 more source

Heritable genome editing in C. elegans via a CRISPR-Cas9 system [PDF]

open access: yes, 2014
CRISPR-Cas systems have been used with single-guide RNAs for accurate gene disruption and conversion in multiple biological systems. Here we report the use of the endonuclease Cas9 to target genomic sequences in the C.
Calarco, John A.   +5 more
core   +1 more source

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