Results 81 to 90 of about 346,273 (274)

RNA from a simple-tandem repeat is required for sperm maturation and male fertility in Drosophila melanogaster. [PDF]

, 2019
Tandemly-repeated DNAs, or satellites, are enriched in heterochromatic regions of eukaryotic genomes and contribute to nuclear structure and function. Some satellites are transcribed, but we lack direct evidence that specific satellite RNAs are required ...
Allshire, Brown, Cai, Chen, Demarco, Dernburg, Ding, Eren-Ghiani, Ferree, Herbert, Hoskins, Hoskins, Jagannathan, Jain, Jandura, Jayaramaiah Raja, Johnson, Kaessmann, Kelemen, Kost, Larracuente, Legendre, Lohe, Lohe, McKee, McNulty, Ni, Nicholson, Pathak, Rathke, Rathke, Rinn, Rošić, Shirai, Shpiz, Steinhauer, Strom, Sun, Velazquez Camacho, Wei, White-Cooper, White-Cooper, Yap, Yuan, Zhu   +44 more
core   +2 more sources

A silencing pathway to induce H3-K9 and H4-K20 trimethylation at constitutive heterochromatin.

Genes & Development, 2004
Histone lysine methylation is a central modification to mark functionally distinct chromatin regions. In particular, H3-K9 trimethylation has emerged as a hallmark of pericentric heterochromatin in mammals. Here we show that H4-K20 trimethylation is also
G. Schotta, M. Lachner, K. Sarma, A. Ebert, Roopsha Sengupta, G. Reuter, D. Reinberg, T. Jenuwein   +7 more
semanticscholar   +1 more source

Unveiling the complexity of cellular senescence in cancers: From mechanism to therapeutic opportunities

BMEMat, EarlyView.
This review highlights the complex roles of cellular senescence in cancer progression and suppression, discusses the mechanisms and regulatory pathways involved, and evaluates the efficacy of the “One‐Two punch” sequential treatment approach while addressing emerging challenges in this novel therapeutic strategy.
Qiuming Pan, Ye Zhu, Zhi Ye, Huayang Zhang, Junxi Wang, Guozhong Yi, Zhiyong Li, Rongyang Xu, Luyao Wang, Zhenzhen Wu, Songtao Qi, Guanglong Huang, Shanqiang Qu   +12 more
wiley   +1 more source

Heat stress-induced activation of MAPK pathway attenuates Atf1-dependent epigenetic inheritance of heterochromatin in fission yeast

eLife
Eukaryotic cells are constantly exposed to various environmental stimuli. It remains largely unexplored how environmental cues bring about epigenetic fluctuations and affect heterochromatin stability.
Li Sun, Libo Liu, Chunlin Song, Yamei Wang, Quan-wen Jin   +4 more
doaj   +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

Targeting and regulatory mechanisms in chromosome-wide gene regulation using Drosophila melanogaster as a model organism [PDF]

, 2010
Tese de mestrado. Biologia (Biologia Molecular e Genética). Universidade de Lisboa, Faculdade de Ciências, 2010O cromossoma 4 de Drosophila melanogaster é muito heterocromático, sendo rico em DNA satélite e DNA de elementos transposáveis. Apesar das suas
Figueiredo, Ana Margarida Adónis, 1986-
core  

Cytological features of penaut genome [PDF]

, 2017
The genus Arachis is composed of 82 species (Krapovickas and Gregory 1994; Valls and Simpson 2005; Valls et al 2013; Santana and Valls 2015) mainly distributed within a large region of South America, which extends from the eastern foothills of the Andes ...
Chalup, Laura María Isabel, Lavia, Graciela Inés, Ortiz, Alejandra Marcela, Robledo Dobladez, Germán Ariel, Samoluk, Sergio Sebastián, Seijo, José Guillermo, Silvestri, María Celeste   +6 more
core   +1 more source

Cytogenetic analysis on geographically distant parthenogenetic populations of Tityus trivittatus Kraepelin, 1898 (Scorpiones, Buthidae): karyotype, constitutive heterochromatin and rDNA localization

Comparative Cytogenetics, 2014
Tityus trivittatus Kraepelin, 1898 is the most medically important scorpion species of Argentina, and parthenogenetic populations are present in the major cities of this country.
Renzo S. Adilardi, A. Affilastro, D. A. Marti, L. M. Mola   +3 more
semanticscholar   +1 more source

Polycomb-lamina antagonism partitions heterochromatin at the nuclear periphery

Nature Communications, 2022
The genome can be divided into two spatially segregated compartments, A and B, which partition active and inactive chromatin states. While constitutive heterochromatin is predominantly located within the B compartment near the nuclear lamina, facultative
Allison P. Siegenfeld, Shelby A. Roseman, Heejin Roh, Nicholas Z. Lue, Corin C. Wagen, Eric Zhou, Sarah E. Johnstone, Martin J. Aryee, Brian B Liau   +8 more
semanticscholar   +1 more source

Therapeutic targeting of chromatin alterations in leukemia and solid tumors

International Journal of Cancer, EarlyView.
Abstract Alterations in chromatin conformation and post‐translational modification of histones have become increasingly recognized as critical drivers of cancer development, progression, and therapy resistance. Recent advances in drug development have led to the establishment of several highly selective small molecule inhibitors, several of which are ...
Florian Perner, Tobias Berg, Daniel Sasca, Sophie‐Luise Mersiowsky, Jayant Y. Gadrey, Johanna Thomas, Michael W. M. Kühn, Michael Lübbert   +7 more
wiley   +1 more source