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Research: Cell-type- and chromosome-specific chromatin landscapes and DNA replication programs of Drosophila testis tumor stem cell–like cells
- Jennifer A. Urban,
- Daniel Ringwalt,
- John M. Urban,
- Wingel Xue,
- Ryan Gleason,
- Keji Zhao,
- and Xin Chen
Genome Res. January 2026 36: 83-101; Published in Advance December 10, 2025, doi:10.1101/gr.280809.125
...Cell-type- and chromosome-specific chromatin landscapes and DNA replication programs of Drosophila testis tumor stem cell–like cells Jennifer A. Urban1, Daniel Ringwalt1, John M. Urban2,3, Wingel Xue1,5, Ryan Gleason1, Keji Zhao4 and Xin Chen1,2 1Department of Biology, The Johns Hopkins University...
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Research: Transposable elements contribute to the evolution of host shift–related genes in cactophilic Drosophila species
- Daniel Siqueira de Oliveira,
- Anaïs Larue,
- William Vilas Boas Nunes,
- Francois Sabot,
- Alejandra Bodelón,
- María Pilar García Guerreiro,
- Cristina Vieira,
- and Claudia Marcia Aparecida Carareto
Genome Res. March 2026 36: 487-505; Published in Advance February 10, 2026, doi:10.1101/gr.280463.125
...difference (FDR < 0.05) between the foreground and background branches (Supplemental Table S3). This result is consistent with the branch model, in which we did not obtain any signature of positive selection.Evolutionary dynamics of TEs in cactophilic Drosophila speciesWe used a combination of automatic...
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Research: Polycomb misregulation in enterocytes drives tissue decline in the aging Drosophila intestine
- Sarah M. Leichter,
- Kami Ahmad,
- and Steven Henikoff
Genome Res. January 2026 36: 102-114; Published in Advance November 17, 2025, doi:10.1101/gr.281058.125
...cells to re-enter the cell cycle partially restores a youthful H3K27me3 landscape, suggesting that DNA replication may rejuvenate chromatin structure (Yang et al. 2023). However, even mitotically active somatic stem cells display age-related increases in Polycomb repression: Aged Drosophila intestinal...
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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
...–gene interactions. We develop a principled new approach to identify and quantify chromatin changes -wide, allowing us to observe differences in TF and nucleosome occupancy that recapitulate well-established pathways identified by gene expression data. We also discover distinct chromatin signatures associated...
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Research: The chromatin landscape of the histone-possessing Bacteriovorax bacteria
- Georgi K. Marinov,
- Benjamin Doughty,
- Anshul Kundaje,
- and William J. Greenleaf
Genome Res. January 2025 35: 109-123; Published in Advance November 21, 2024, doi:10.1101/gr.279418.124
.... Finally, similar to that of other bacteria without histones, the Bacteriovorax exists in a 3D configuration organized by the parABS system along the axis defined by replication origin and termination regions. These results provide a foundation for understanding the chromatin biology of the unique...
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Mini-Review: The chromatin tapestry as a framework for neurodevelopment
- Ben Nolan,
- Timothy E. Reznicek,
- Christopher T. Cummings,
- and M. Jordan Rowley
Genome Res. October 2024 34: 1477-1486; doi:10.1101/gr.278408.123
...'s canonical role is to control only one aspect of chromatin. These phenomena further highlight the interdependence and coregulation of these features. A clinically useful application of this interplay has been the development of DNA methylation signatures to diagnose a wide variety of epigenetic conditions...
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Method: KAS-ATAC reveals the genome-wide single-stranded accessible chromatin landscape of the human genome
- Samuel H. Kim,
- Georgi K. Marinov,
- and William J. Greenleaf
Genome Res. January 2025 35: 124-134; Published in Advance November 21, 2024, doi:10.1101/gr.279621.124
...–289. doi:10.1038/nmeth.1313 ↵Keene MA, Corces V, Lowenhaupt K, Elgin SC. 1981. DNase I hypersensitive sites in Drosophila chromatin occur at the 5′ ends of regions of transcription. Proc Natl Acad Sci 78: 143–146. doi:10.1073/pnas.78.1.143 ↵Kelly TK, Liu Y, Lay FD, Liang G, Berman BP, Jones PA. 2012...
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Research: Rapid evolution of piRNA clusters in the Drosophila melanogaster ovary
- Satyam P. Srivastav,
- Cédric Feschotte,
- and Andrew G. Clark
Genome Res. May 2024 34: 711-724; Published in Advance May 15, 2024, doi:10.1101/gr.278062.123
...in Drosophila melanogaster, much less is known about the origin and evolution of piCs in this or any other species. To investigate piC origin and evolution, we use a population genomic approach to compare piC activity and sequence composition across eight geographically distant strains of D. melanogaster...
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Research: Evolution and genomic signatures of spontaneous somatic mutation in Drosophila intestinal stem cells
- Nick Riddiford,
- Katarzyna Siudeja,
- Marius van den Beek,
- Benjamin Boumard,
- and Allison J. Bardin
Genome Res. August 2021 31: 1419-1432; Published in Advance June 24, 2021, doi:10.1101/gr.268441.120
...belonging to the same family. Recombination between the two TEs deleted the central region. (F) A second possible explanation of class III breakpoint signatures, wherein DNA damage is repaired by a replicative polymerase that erroneously copies TE sequence into one or several of the breakpoint junctions...
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Research: Chromatin conformation and transcriptional activity are permissive regulators of DNA replication initiation in Drosophila
- Robin L. Armstrong,
- Taylor J.R. Penke,
- Brian D. Strahl,
- A. Gregory Matera,
- Daniel J. McKay,
- David M. MacAlpine,
- and Robert J. Duronio
Genome Res. November 2018 28: 1688-1700; Published in Advance October 2, 2018, doi:10.1101/gr.239913.118
...-poor, inaccessible heterochromatin, a causal relationship between chromatin structure and replication initiation remains elusive. Here, we combined histone gene engineering and whole- sequencing in Drosophila to determine how perturbing chromatin structure affects replication initiation. We found that most...

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