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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
..., yet the chromatin changes driving this decline remain unclear. Polycomb-mediated repression is essential for silencing developmental genes, but this regulatory mechanism becomes dysregulated with age. Although shifts in Polycomb regulation within intestinal stem cells have been linked to gut aging...
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Method: High-resolution simulations of chromatin folding at genomic rearrangements in malignant B cells provide mechanistic insights into proto-oncogene deregulation
- Daniel Rico,
- Daniel Kent,
- Nefeli Karataraki,
- Aneta Mikulasova,
- Rolando Berlinguer-Palmini,
- Brian A. Walker,
- Biola M. Javierre,
- Lisa J. Russell,
- and Chris A. Brackley
Genome Res. July 2022 32: 1355-1366; Published in Advance July 21, 2022, doi:10.1101/gr.276028.121
...with their reduced genomic separation. The simulations also predict that very little change in gene expression level would result from removing the insert while keeping the U266 chromatin states. Together these results suggest that it is chromatin remodeling which drives the changes in the 3D structure of the locus...
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Method: Accessible Region Conformation Capture (ARC-C) gives high-resolution insights into genome architecture and regulation
- Ni Huang,
- Wei Qiang Seow,
- Alex Appert,
- Yan Dong,
- Przemyslaw Stempor,
- and Julie Ahringer
Genome Res. February 2022 32: 357-366; Published in Advance December 21, 2021, doi:10.1101/gr.275669.121
...Accessible Region Conformation Capture (ARC-C) gives high-resolution insights into architecture and regulation Ni Huang1,2, Wei Qiang Seow1,2, Alex Appert1, Yan Dong1, Przemyslaw Stempor1 and Julie Ahringer1 1The Gurdon Institute and Department of Genetics, University of Cambridge, Cambridge CB2 1...
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Research: High-resolution structural genomics reveals new therapeutic vulnerabilities in glioblastoma
- Michael J. Johnston,
- Ana Nikolic,
- Nicoletta Ninkovic,
- Paul Guilhamon,
- Florence M.G. Cavalli,
- Steven Seaman,
- Franz J. Zemp,
- John Lee,
- Aly Abdelkareem,
- Katrina Ellestad,
- Alex Murison,
- Michelle M. Kushida,
- Fiona J. Coutinho,
- Yussanne Ma,
- Andrew J. Mungall,
- Richard Moore,
- Marco A. Marra,
- Michael D. Taylor,
- Peter B. Dirks,
- Trevor J. Pugh,
- Sorana Morrissy,
- Bradley St Croix,
- Douglas J. Mahoney,
- Mathieu Lupien,
- and Marco Gallo
Genome Res. August 2019 29: 1211-1222; Published in Advance June 27, 2019, doi:10.1101/gr.246520.118
...et al. 2015) and cancer (Flavahan et al. 2016) through dysregulation of gene expression programs. The global impact of architecture on transcriptional programs in gliomas and other brain tumors has been difficult to assess because of the lack of high-resolution 3D maps for these cancers. We...
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Method: Profiling the quantitative occupancy of myriad transcription factors across conditions by modeling chromatin accessibility data
- Kaixuan Luo,
- Jianling Zhong,
- Alexias Safi,
- Linda K. Hong,
- Alok K. Tewari,
- Lingyun Song,
- Timothy E. Reddy,
- Li Ma,
- Gregory E. Crawford,
- and Alexander J. Hartemink
Genome Res. June 2022 32: 1183-1198; Published in Advance May 24, 2022, doi:10.1101/gr.272203.120
...the chromatin accessibility data into predictive features using five bins that aggregate the number of cleavage events occurring within the motif itself, as well as within two nonoverlapping flanking regions upstream and downstream; this is the same binning scheme used in the MILLIPEDE model (Luo and Hartemink...
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Research: A high-resolution gene expression atlas links dedicated meristem genes to key architectural traits
- Steffen Knauer,
- Marie Javelle,
- Lin Li,
- Xianran Li,
- Xiaoli Ma,
- Kokulapalan Wimalanathan,
- Sunita Kumari,
- Robyn Johnston,
- Samuel Leiboff,
- Robert Meeley,
- Patrick S. Schnable,
- Doreen Ware,
- Carolyn Lawrence-Dill,
- Jianming Yu,
- Gary J. Muehlbauer,
- Michael J. Scanlon,
- and Marja C.P. Timmermans
Genome Res. December 2019 29: 1962-1973; Published in Advance November 19, 2019, doi:10.1101/gr.250878.119
...a high-resolution gene expression atlas of the vegetative maize shoot apex, we show here that distinct sets of genes govern the regulation and identity of stem cells in maize versus Arabidopsis. Cell identities in the maize SAM reflect the combinatorial activity of transcription factors (TFs) that drive...
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Research: Revisiting chromatin packaging in mouse sperm
- Qiangzong Yin,
- Chih-Hsiang Yang,
- Olga S. Strelkova,
- Jingyi Wu,
- Yu Sun,
- Sneha Gopalan,
- Liyan Yang,
- Job Dekker,
- Thomas G. Fazzio,
- Xin Zhiguo Li,
- Johan Gibcus,
- and Oliver J. Rando
Genome Res. December 2023 33: 2079-2093; Published in Advance December 21, 2023, doi:10.1101/gr.277845.123
...this hypothesis, we performed ATAC-seq in a commonly studied cell type—mESCs—treated with the same conditions used for sperm preparations. Our ATAC-seq profiles from untreated mESCs broadly recapitulated known features of the ESC chromatin landscape (Fig. 3A,B), with widespread peaks of accessible chromatin...
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Method: Genome-wide cancer-specific chromatin accessibility patterns derived from archival processed xenograft tumors
- Shelsa S. Marcel,
- Austin L. Quimby,
- Melodie P. Noel,
- Oscar C. Jaimes,
- Marjan Mehrab-Mohseni,
- Suud A. Ashur,
- Brian Velasco,
- James K. Tsuruta,
- Sandeep K. Kasoji,
- Charlene M. Santos,
- Paul A. Dayton,
- Joel S. Parker,
- Ian J. Davis,
- and Samantha G. Pattenden
Genome Res. December 2021 31: 2327-2339; Published in Advance November 23, 2021, doi:10.1101/gr.275219.121
...chromatin.Pattern of extracted accessible chromatin signal is unaffected by inclusion of nanodropletsWe then asked whether the inclusion of nanodroplets influenced FAIRE signal in FFPE preserved cells -wide. FAIRE-seq was performed on chromatin isolated from EWS894 cells and human umbilical vein endothelial...
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Method: Resolving the chromatin impact of mosaic variants with targeted Fiber-seq
- Stephanie C. Bohaczuk,
- Zachary J. Amador,
- Chang Li,
- Benjamin J. Mallory,
- Elliott G. Swanson,
- Jane Ranchalis,
- Mitchell R. Vollger,
- Katherine M. Munson,
- Tom Walsh,
- Morgan O. Hamm,
- Yizi Mao,
- Andre Lieber,
- and Andrew B. Stergachis
Genome Res. December 2024 34: 2269-2278; Published in Advance December 9, 2024, doi:10.1101/gr.279747.124
...had unchanged chromatin accessibility, consistent with findings that suggest posttranscriptional mechanisms drive reduced DMPK mRNA levels in DM1 (Hamshere et al. 1997; Frisch et al. 2001). Notably, CpG methylation was unchanged at the SIX5 promoter, consistent with its altered promoter accessibility...
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Resource: Comprehensive characterization of tissue-specific chromatin accessibility in L2 Caenorhabditis elegans nematodes
- Timothy J. Durham,
- Riza M. Daza,
- Louis Gevirtzman,
- Darren A. Cusanovich,
- Olubusayo Bolonduro,
- William Stafford Noble,
- Jay Shendure,
- and Robert H. Waterston
Genome Res. October 2021 31: 1952-1969; Published in Advance April 22, 2021, doi:10.1101/gr.271791.120
...in other single-cell genomics technologies can now also characterize the regulatory context of the that gives rise to these gene expression levels at a single-cell resolution. To explore the regulatory DNA of individual cell types in C. elegans, we collected single-cell chromatin accessibility data using...
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