Results 151 to 160 of about 102,928 (311)

Age and Sex Effects on Blood Retrotransposable Element Expression Levels: Findings From the Population‐Based Rhineland Study

Aging Cell, EarlyView.
Retrotransposable element (RTE) expression increases with chronological and biological age and is negatively associated with heterochromatin regulators. Moreover, RTE expression shows sex‐specific differences, with higher levels in men and enrichment for immune‐related pathways.
Valentina Talevi, Hang‐Mao Lee, Dan Liu, Marc D. Beyer, Paolo Salomoni, Monique M. B. Breteler, N. Ahmad Aziz   +6 more
wiley   +1 more source

MeCP2 dependent heterochromatin reorganization during neural differentiation of a novel Mecp2-deficient embryonic stem cell reporter line.

PLoS ONE, 2012
The X-linked Mecp2 is a known interpreter of epigenetic information and mutated in Rett syndrome, a complex neurological disease. MeCP2 recruits HDAC complexes to chromatin thereby modulating gene expression and, importantly regulates higher order ...
Bianca Bertulat, Maria Luigia De Bonis, Floriana Della Ragione, Anne Lehmkuhl, Manuela Milden, Christian Storm, K Laurence Jost, Simona Scala, Brian Hendrich, Maurizio D'Esposito, M Cristina Cardoso   +10 more
doaj   +1 more source

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

Aging Cell, EarlyView.
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, Yang Yang, Mahbod Djamshidi, Sara Seifan, Nicholas S. Y. Ting, Joel Glover, Nicolas Touret, Paul M. K. Gordon, K. V. Vineetha Warriyar, Hokan Krowicki, Christine Kim Garcia, Sharon A. Savage, Aaron A. Goodarzi, Duncan M. Baird, Tara L. Beattie, Karl Riabowol   +15 more
wiley   +1 more source

Nucleation and spreading of a heterochromatic domain in fission yeast

Nature Communications, 2016
Chromosomes contain large heterochromatin domains. Here, the authors measure the kinetics of heterochromatin formation in fission yeast and show both global and local feedbacks by nucleosome-bound enzymes are important for formation and stability of the ...
Michaela J. Obersriebnig, Emil M. H. Pallesen, Kim Sneppen, Ala Trusina, Geneviève Thon   +4 more
doaj   +1 more source

A self-organised liquid reaction container for cellular memory [PDF]

arXiv
Epigenetic inheritance during cell division is essential for preserving cell identity by stabilizing the overall chromatin organisation. Heterochromatin,the condensed and transcriptionally silent fraction of chromatin,is marked by specific epigenetic modifications that are diluted during each cell division.
arxiv  

HETEROCHROMATIN AND GENETIC ACTIVITY IN MEALY BUGS I. COMPENSATION FOR INACTIVE CHROMATIN BY INCREASE IN CELL NUMBER [PDF]

, 1968
Laurence Berlowitz, Mary W. Loewus, Dominick Pallotta   +2 more
openalex   +1 more source

Non‐canonical nitric oxide signalling and DNA methylation: Inflammation induced epigenetic alterations and potential drug targets

British Journal of Pharmacology, EarlyView.
Abstract DNA methylation controls DNA accessibility to transcription factors and other regulatory proteins, thereby affecting gene expression and hence cellular identity and function. As epigenetic modifications control the transcriptome, epigenetic dysfunction is strongly associated with pathological conditions and ageing.
Christopher H. Switzer
wiley   +1 more source

The Role of Histone Methyltransferase SETDB1 in Normal and Malignant Hematopoiesis

Cancer Science, EarlyView.
In this review, we discuss the role of SETDB1 in gene regulation, including an overview of its structural features and key cofactors. We also highlight the lineage‐specific roles of SETDB1 in both normal hematopoietic processes and hematological malignancies, emphasizing its function as an immune checkpoint molecule that suppresses natural killer cell ...
Yu‐Hsuan Chang, Susumu Goyama
wiley   +1 more source

Somatic Pairing in Drosophila virilis Mitosis [PDF]

, 1975
In neuroblast cells homologous chromosomes tend to pair during prophase of mitosis. Heterochromatic elements of homologous chromosomes are widely separated in very early prophase, at which time the euchromatin is poorly stained.
Guest, William C.
core   +2 more sources

Hypertranscription of rDNA Responsible for Nucleolar Remodelling is a Doorman for Acquiring Pluripotency

Cell Proliferation, EarlyView.
Active nucleoli have the capability to release perinuclear heterochromatin, which is a novel event of iPSC reprogramming. ABSTRACT Ribosome biogenesis occurs within the nucleolus, with the initial step being the transcription of ribosomal DNA (rDNA). Although rDNA transcription is limited in somatic cells, it is more active in stem cells. Nevertheless,
Yuchen Sun, Xinglin Hu, Xingwei Huang, Wenyao Zhou, Shubing Lan, Hui Zhang, Guangming Wu, Lei Lei   +7 more
wiley   +1 more source