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Histone H3K9 methylation (H3K9me) by Setdb1 silences retrotransposons (rTE) by sequestering them in constitutive heterochromatin. Atf7IP is a constitutive binding partner of Setdb1 and is responsible for Setdb1 nuclear localization, activation and chromatin recruitment. However, structural details of the Setdb1/Atf7IP interaction have not been evaluated.
View Article and Find Full Text PDFA large fraction of the genome interacts with the nuclear periphery through lamina-associated domains (LADs), repressive regions which play an important role in genome organization and gene regulation across development. Despite much work, LAD structure and regulation are not fully understood, and a mounting number of studies have identified numerous genetic and epigenetic differences within LADs, demonstrating they are not a uniform group. Here we profile Lamin B1, HP1β, H3K9me3, H3K9me2, H3K27me3, H3K14ac, H3K27ac, and H3K9ac in MEF cell lines derived from the same mouse colony and cluster LADs based on the abundance and distribution of these features across LADs.
View Article and Find Full Text PDFDevelopment of nucleus-targeted histone-tail-based photoaffinity probes to profile the epigenetic interactome in native cells.
Nat Commun
January 2025
School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Key Laboratory of Animal Source of Anhui Province, Hefei University of Technology, Hefei, 230009, China.
Dissection of the physiological interactomes of histone post-translational modifications (hPTMs) is crucial for understanding epigenetic regulatory pathways. Peptide- or protein-based histone photoaffinity tools expanded the ability to probe the epigenetic interactome, but in situ profiling in native cells remains challenging. Here, we develop a nucleus-targeting histone-tail-based photoaffinity probe capable of profiling the hPTM-mediated interactomes in native cells, by integrating cell-permeable and nuclear localization peptide modules into an hPTM peptide equipped with a photoreactive moiety.
View Article and Find Full Text PDF[Aggressive mucinous tubular and spindle cell carcinoma of the kidney: a clinicopathological and genetic analysis of four cases].
Zhonghua Bing Li Xue Za Zhi
January 2025
Department of Pathology, School of Basic Medical Sciences, Peking University Third Hospital, Peking University Health Science Center, Beijing100191, China.
To understand the clinicopathological and molecular genetic characteristics of aggressive renal mucinous tubular and spindle cell carcinoma (MTSCC). The clinical features, histology, immunophenotype, molecular characteristics and prognosis of 4 cases of metastatic/recurrent renal MTSCC that were submitted to the Peking University Third Hospital (2 cases), Institute of Urology, Peking University (one case) and Zhejiang Provincial People's Hospital (one case) from 2015 to 2020 were retrospectively reviewed and analyzed. Among the four patients, two were male and two were female.
View Article and Find Full Text PDFPain in rheumatoid arthritis: Emerging role of high mobility group box 1 protein-HMGB1.
Life Sci
January 2025
Agroprocessing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. Electronic address:
Rheumatoid arthritis (RA) is a chronic inflammatory disease where pain, driven by both inflammatory and non-inflammatory processes, is a major concern for patients. This pain can persist even after joint inflammation subsides. High mobility group box-1 (HMGB1) is a non-histone-DNA binding protein located in the nucleus that plays a key role in processes such as DNA transcription, recombination, and replication.
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