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Epigenomes, Volume 6, Issue 4

2022 December - 14 articles

Cover Story: DNA methylation has many implications across an individual’s life. It can be both stable across developmental and generational time, as well flexible in response to changing environments. An additional implication of DNA methylation is that it is a potent mutagen in that methylated cytosines mutate at a much higher rate than other genetic motifs. Despite its prevalence and obvious effect, the mutagenic property of DNA methylation has been largely ignored in eco-evolutionary literature. Here, we explore how DNA methylation might promote mutation, leading to faster and more targeted evolutionary change than through stochastic genetic mutations alone. We argue for future research on the evolutionary implications of DNA-methylation-driven mutations both within and across organism generations. View this paper
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Articles (14)

  • Article
  • Open Access
7 Citations
5,061 Views
25 Pages

Promoter-Adjacent DNA Hypermethylation Can Downmodulate Gene Expression: TBX15 in the Muscle Lineage

  • Kenneth C. Ehrlich,
  • Michelle Lacey,
  • Carl Baribault,
  • Sagnik Sen,
  • Pierre Olivier Esteve,
  • Sriharsa Pradhan and
  • Melanie Ehrlich

TBX15, which encodes a differentiation-related transcription factor, displays promoter-adjacent DNA hypermethylation in myoblasts and skeletal muscle (psoas) that is absent from non-expressing cells in other lineages. By whole-genome bisulfite sequen...

  • Review
  • Open Access
6 Citations
7,177 Views
24 Pages

RINGs, DUBs and Abnormal Brain Growth—Histone H2A Ubiquitination in Brain Development and Disease

  • Lucy Anne Doyle,
  • Firuze Unlu Bektas,
  • Eleftheria Chatzantonaki,
  • Charlotte Repton,
  • Alexandra Derrien and
  • Robert Scott Illingworth

During mammalian neurodevelopment, signaling pathways converge upon transcription factors (TFs) to establish appropriate gene expression programmes leading to the production of distinct neural and glial cell types. This process is partially regulated...

  • Commentary
  • Open Access
2 Citations
2,993 Views
3 Pages

28 November 2022

Profiling of 5-hydroxymethylcytosine (5hmC) in the brain regions of rhesus monkey at different ages reveals accumulation and tissue-specific patterns of 5hmC with aging. Region-specific differentially hydroxymethylated regions (DhMRs) are involved in...

  • Article
  • Open Access
8 Citations
4,021 Views
24 Pages

The Polycomb group (PcG) complex PRC1 localizes in the nucleus in condensed structures called Polycomb bodies. The PRC1 subunit Polyhomeotic (Ph) contains an oligomerizing sterile alpha motif (SAM) that is implicated in both PcG body formation and ch...

  • Review
  • Open Access
4 Citations
3,723 Views
11 Pages

Centromere Chromatin Dynamics at a Glance

  • Shivangi Shukla and
  • Ashutosh Kumar

The centromere is a specialized DNA locus that ensures the faithful segregation of chromosomes during cell division. It does so by directing the assembly of an essential proteinaceous structure called the kinetochore. The centromere identity is prima...

  • Article
  • Open Access
2 Citations
3,506 Views
15 Pages

Pan HDACi Valproic Acid and Trichostatin A Show Apparently Contrasting Inflammatory Responses in Cultured J774A.1 Macrophages

  • Ubah Dominic Babah Ubah,
  • Korawin Triyasakorn,
  • Brandon Roan,
  • Minsyusheen Conlin,
  • James C. K. Lai and
  • Prabha S. Awale

This study was initiated as an attempt to clarify some of the apparent conflicting data regarding the so-called anti-inflammatory versus proinflammatory properties of histone deacetylase inhibitors (HDACis). In cell culture, typically, chronic pretre...

  • Article
  • Open Access
6 Citations
3,756 Views
17 Pages

Ikaros Regulates microRNA Networks in Acute Lymphoblastic Leukemia

  • Sophie Kogut,
  • Hana Paculova,
  • Princess Rodriguez,
  • Joseph Boyd,
  • Alyssa Richman,
  • Amrita Palaria,
  • Hilde Schjerven and
  • Seth Frietze

The hematopoietic transcription factor Ikaros (IKZF1) regulates normal B cell development and functions as a tumor suppressor in precursor B cell acute lymphoblastic leukemia (B-ALL). MicroRNAs (miRNAs) are small regulatory RNAs that through post-tra...

  • Article
  • Open Access
3,313 Views
19 Pages

PLK-1 Interacting Checkpoint Helicase, PICH, Mediates Cellular Oxidative Stress Response

  • Anindita Dutta,
  • Apurba Das,
  • Deepa Bisht,
  • Vijendra Arya and
  • Rohini Muthuswami

Cells respond to oxidative stress by elevating the levels of antioxidants, signaling, and transcriptional regulation, often implemented by chromatin remodeling proteins. The study presented here shows that the expression of PICH, a Rad54-like helicas...

  • Article
  • Open Access
2,746 Views
22 Pages

Non-coding RNA fragments (ncRFs) are small RNA fragments processed from non-coding RNAs (ncRNAs). ncRFs have various functions and are commonly tissue-specific, and their processing is altered by exposure to stress. Information about ncRFs in the bra...

  • Article
  • Open Access
5 Citations
4,303 Views
17 Pages

Advanced Image Analysis Methods for Automated Segmentation of Subnuclear Chromatin Domains

  • Philippe Johann to Berens,
  • Geoffrey Schivre,
  • Marius Theune,
  • Jackson Peter,
  • Salimata Ousmane Sall,
  • Jérôme Mutterer,
  • Fredy Barneche,
  • Clara Bourbousse and
  • Jean Molinier

The combination of ever-increasing microscopy resolution with cytogenetical tools allows for detailed analyses of nuclear functional partitioning. However, the need for reliable qualitative and quantitative methodologies to detect and interpret chrom...

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Epigenomes - ISSN 2075-4655