Results 51 to 60 of about 12,566 (212)

DNA and heterochromatin cycles in male gamete development of Oedogonium

Acta Societatis Botanicorum Poloniae, 2014
In antheridial nuclei of Oedogonium cardiacum (Hass.) Wittr. during male gamete formation, the DNA presynthetic period is shortened, the synthetic and postsynthetic periods are lengthened (G1 - 15%, S - 58%, G2 - 29%) as compared with those in vegetative
S. P. Shpilevaya
doaj   +1 more source

A Reporter Platform to Study Therapy‐Induced Senescence in Live Cancer Cells

Small Methods, EarlyView.
This study describes the development and applications of a transgenic lamin‐based senescence reporter platform based on changes in lamin‐B1‐ and lamin‐A intensities during senescence‐induction. The reporter platform is a versatile tool, allowing to screen for and sort senescent cancer cells, allowing marker integration (for example incorporating IL6 ...
Jacinta van de Grint, Mengqi Huang, Ruben Sangers, Hanny Odijk, Thom Reuvers, Jose M. Heredia‐Genestar, Anja Raams, Tsung Wai Kan, Joris Pothof, Roland Kanaar, Maayke M.P. Kuijten   +10 more
wiley   +1 more source

Targets of histone H3 lysine 9 methyltransferases

Frontiers in Cell and Developmental Biology, 2022
Histone H3 lysine 9 di- and trimethylation are well-established marks of constitutively silenced heterochromatin domains found at repetitive DNA elements including pericentromeres, telomeres, and transposons. Loss of heterochromatin at these sites causes
Aidan J. Levinsky, Aidan J. Levinsky, Gregor McEdwards, Gregor McEdwards, Nasha Sethna, Nasha Sethna, Mark A. Currie, Mark A. Currie   +7 more
doaj   +1 more source

Molecular mechanisms of sex determination in Lepidoptera: current status and perspectives

Insect Science, EarlyView.
The genetic basis of sex determination in Lepidoptera was discovered in 2014 in the silkworm Bombyx mori. In this model species, the W chromosome‐derived small piRNA called Fem piRNA downregulates the expression of a Z‐linked gene, Masculinizer (Masc), which leads to the default female‐specific splicing of the doublesex gene (dsxF) and thus to female ...
František Marec, Atsuo Yoshido, Arjen E. van′t Hof   +2 more
wiley   +1 more source

Enhancer Rewiring Orchestrates Inflammation and Loss of Cell Identity During Muscle Stem Cell Aging

Aging Cell, EarlyView.
A comprehensive multi‐omic profiling of murine muscle stem cells across three ages and both sexes reveals extensive enhancer and 3D genome rewiring, concomitant with increased inflammation, lineage drift, loss of quiescence, and reduced myogenic potential.
Changyou Shi, Na Yang, Evelyn Pizano, Lin Wang, James R. Occean, Chang‐Yi Cui, Ling Liu, Christopher Dunn, Frimpong Boadu, Qiong Meng, Nirad Banskota, Jen‐Hao Yang, Jinshui Fan, Supriyo De, Jianlin Cheng, Thomas A. Rando, Vittorio Sartorelli, Payel Sen   +17 more
wiley   +1 more source

Histone marks enable formation of immiscible phase-separated chromatin compartments

Cell Reports
Summary: Eukaryotic chromatin is organized into compartments for gene expression regulation, but the underlying mechanisms remain unclear. Here, we demonstrate that multivalent H3K27me3 and its reader, the CBX7-PRC1 complex, regulate facultative ...
Wenjing Sun, Jiacheng Wang, Wenqian Liu, Baixue Tang, Hongyuan Qu, Huanxing Su, Jianwei Wang, Haitao Li, Wei Xie, Pilong Li   +9 more
doaj   +1 more source

Integration of epigenetics into ecotoxicology: insights and fundamental research needs

Biological Reviews, EarlyView.
ABSTRACT Epigenetics refers to heritable changes in genome function that occur without direct alterations to the DNA sequence. A multitude of environmental contaminants can influence the epigenetic marks of a genome. Changes of epigenetic marks including DNA methylation, histone modifications, and non‐coding RNAs can induce alterations at the gene ...
Albano Pinto, Jana Asselman, Patrícia Pereira, Joana Luísa Pereira   +3 more
wiley   +1 more source

PhpCNF-Y transcription factor infiltrates heterochromatin to generate cryptic intron-containing transcripts crucial for small RNA production

Nature Communications
The assembly of repressive heterochromatin in eukaryotic genomes is crucial for silencing lineage-inappropriate genes and repetitive DNA elements. Paradoxically, transcription of repetitive elements within constitutive heterochromatin domains is required
Manjit Kumar Srivastav, H. Diego Folco, Patroula Nathanailidou, Anupa T Anil, Drisya Vijayakumari, Shweta Jain, Jothy Dhakshnamoorthy, Maura O’Neill, Thorkell Andresson, David Wheeler, Shiv I. S. Grewal   +10 more
doaj   +1 more source

TGM2 Regulates Radiosensitivity via POGZ‐Mediated Repair of DNA Double‐Strand Breaks in Cervical Cancer

Cancer Science, EarlyView.
The present study revealed for the first time that TGM2 could regulate the radiosensitivity of cervical cancer via POGZ‐mediated DNA DSB repair. Our findings revealed that TGM2 regulates the radiosensitivity of cervical cancer and demonstrated that POGZ serves as a bridge linking TGM2 to the DNA damage repair process, and suggested a novel mechanistic ...
Yunbo Chi, Peng Dong, Ning Zhang, Baocai Liu, Qian Wang, Guanghui Cheng   +5 more
wiley   +1 more source

Comparative analyses of SUV420H1 isoforms and SUV420H2 reveal differences in their cellular localization and effects on myogenic differentiation. [PDF]

PLoS ONE, 2010
BACKGROUND:Methylation of histone H4 on lysine 20 plays critical roles in chromatin structure and function via mono- (H4K20me1), di- (H4K20me2), and trimethyl (H4K20me3) derivatives.
Leanna W K Tsang, Ninghe Hu, D Alan Underhill   +2 more
doaj   +1 more source