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Research: Genome-wide nucleosome and transcription factor responses to genetic perturbations reveal chromatin-mediated mechanisms of transcriptional regulation
- Kevin Moyung,
- Yulong Li,
- Heather K. MacAlpine,
- Alexander J. Hartemink,
- and David M. MacAlpine
Genome Res. January 2026 36: 115-128; Published in Advance December 9, 2025, doi:10.1101/gr.279637.124
...these universal instructions into cell type–specific programs that are able to respond to developmental and environmental cues. In part, this regulation is mediated by epigenetic mechanisms, which alter the accessibility of the chromatin in conjunction with changes in transcription factor (TF) and nucleosome...
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Research: Haplotype-resolved telomere-to-telomere genome of Aphelenchus avenae implicates P5CS in nematode desiccation stress response
- Yali Zhang,
- Yayi Zhou,
- Yangyang Chen,
- Xueyu Wang,
- Boyan Hu,
- Shahid Siddique,
- Romnick A. Latina,
- Veronica I. Casey,
- Dexin Bo,
- Yucheng Liao,
- Min Zhang,
- Ming Sun,
- Fengjuan Zhang,
- and Dadong Dai
Genome Res. April 2026 36: 726-739; Published in Advance March 23, 2026, doi:10.1101/gr.281016.125
...to fragile cryo-EM samples during plunge freezing. Nat Commun 15: 7705. doi:10.1038/s41467-024-52091-1 ↵Adhikari BN, Wall DH, Adams BJ. 2010. Effect of slow desiccation and freezing on gene transcription and stress survival of an antarctic nematode. J Exp Biol 213: 1803–1812. doi:10.1242/jeb.032268 ↵Alpert P...
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Method: Size-based expectation maximization for characterizing nucleosome positions and subtypes
- Jianyu Yang,
- Kuangyu Yen,
- and Shaun Mahony
Genome Res. September 2024 34: 1334-1343; Published in Advance June 17, 2024, doi:10.1101/gr.279138.124
...on their chromatin accessibility. Short-fragment nucleosomes in accessible regions exhibit high MNase sensitivity and are enriched at transcription start sites (TSSs) and CTCF peaks, similar to previously reported “fragile nucleosomes.” These SEM-defined accessible short-fragment nucleosomes are found not just...
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Research: Intergenic accumulation of RNA polymerase II maintains the potential for swift transcriptional restart upon release from quiescence
- Manuela Baquero Pérez,
- Gertjan Laenen,
- Isabelle Loïodice,
- Mickaël Garnier,
- Ugo Szachnowski,
- Antonin Morillon,
- Myriam Ruault,
- and Angela Taddei
Genome Res. October 2025 35: 2226-2239; Published in Advance August 12, 2025, doi:10.1101/gr.279874.124
...metabolic pathways and stress-response genes as glucose depletes. When glucose runs out, cells enter the diauxic shift (DS), transitioning to ethanol metabolism, with a growth arrest and a twofold decrease in transcription (DeRisi 1997; Gasch and Werner-Washburne 2002; Miles et al. 2013; McKnight et al...
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Research: Developmental transcriptomics in Pristionchus reveals the environmental responsiveness of a plasticity gene-regulatory network
- Shelley Reich,
- Tobias Loschko,
- Julie Jung,
- Samantha Nestel,
- Ralf J. Sommer,
- and Michael S. Werner
Genome Res. July 2025 35: 1560-1573; Published in Advance June 9, 2025, doi:10.1101/gr.279783.124
...and difficulties in laboratory rearing.The nematode Pristionchus pacificus was introduced as a model system for studying developmental plasticity in 2010 (Bento et al. 2010). Similar to Caenorhabditis elegans, P. pacificus has four larval stages (J1–J4), although the first stage remains enclosed in the egg...
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Research: Nucleosome binding by TP53, TP63, and TP73 is determined by the composition, accessibility, and helical orientation of their binding sites
- Patrick D. Wilson,
- Xinyang Yu,
- Christopher R. Handelmann,
- and Michael J. Buck
Genome Res. March 2025 35: 404-416; Published in Advance February 10, 2025, doi:10.1101/gr.279541.124
...—the three members of the TP53 family—regulate gene expression by binding to their DNA binding sites, many of which are situated within nucleosomes. To thoroughly examine the nucleosome-binding abilities of the TP53 family, we used Pioneer-seq, a technique that assesses a transcription factor's binding...
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Resource: CGC1, a new reference genome for Caenorhabditis elegans
- Kazuki Ichikawa,
- Massa J. Shoura,
- Karen L. Artiles,
- Dae-Eun Jeong,
- Chie Owa,
- Haruka Kobayashi,
- Yoshihiko Suzuki,
- Manami Kanamori,
- Yu Toyoshima,
- Yuichi Iino,
- Ann E. Rougvie,
- Lamia Wahba,
- Andrew Z. Fire,
- Erich M. Schwarz,
- and Shinichi Morishita
Genome Res. August 2025 35: 1902-1918; Published in Advance July 15, 2025, doi:10.1101/gr.280274.124
...new, with StringTie2 transcripts providing evidence for the reality of AUGUSTUS predictions. To provide further evidence for predictions, we mapped mass spectrometric data from three surveys of the C. elegans proteome (Xia et al. 2018; Müller et al. 2020; Ceron-Noriega et al. 2023) to N2 and AUGUSTUS...
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Research: Genome-wide profiling reveals functional interplay of DNA sequence composition, transcriptional activity, and nucleosome positioning in driving DNA supercoiling and helix destabilization in C. elegans
- Kristina Krassovsky,
- Rajarshi P. Ghosh,
- and Barbara J. Meyer
Genome Res. July 2021 31: 1187-1202; Published in Advance June 24, 2021, doi:10.1101/gr.270082.120
...stress at regulatory elements are critical parameters in shaping important developmental events.Within the nucleus, the predominant form of DNA is a double-stranded right-handed helix with 10.4 bp per helical turn, termed B-DNA. Essential biological processes such as transcription of genes can either...
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Resource: Isoform- and pathway-specific regulation of post-transcriptional RNA processing in human cells
- Ishwarya Venkata Narayanan,
- Karan Bedi,
- Brian Magnuson,
- Ariel McShane,
- Mario Ashaka,
- Michelle Paulsen,
- Thomas E Wilson,
- and Mats Ljungman
Genome Res. March 26, 2026 gr.280892.125; Published in Advance March 26, 2026, doi:10.1101/gr.280892.125
...a chase of metabolically bromouridine-59 labeled steady-state RNA (Tani and Akimitsu 2012; Tani et al. 2012; Imamachi et al. 60 2014). While transcription inhibition with pharmacological inhibitors such as actinomycin 61 D is stressful to cells, metabolic labeling of RNA with bromouridine for extended...
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Research: Nucleosome repositioning in chronic lymphocytic leukemia
- Kristan V. Piroeva,
- Charlotte McDonald,
- Charalampos Xanthopoulos,
- Chelsea Fox,
- Christopher T. Clarkson,
- Jan-Philipp Mallm,
- Yevhen Vainshtein,
- Luminita Ruje,
- Lara C. Klett,
- Stephan Stilgenbauer,
- Daniel Mertens,
- Efterpi Kostareli,
- Karsten Rippe,
- and Vladimir B. Teif
Genome Res. October 2023 33: 1649-1661; Published in Advance September 12, 2023, doi:10.1101/gr.277298.122
...are linked to active chromatin remodeling and reduced DNA methylation. Nucleosomes lost or gained in CLL marks differential binding of 3D chromatin organizers such as CTCF as well as immune response–related transcription factors and delineated mechanisms of epigenetic deregulation. The principal component...
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