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NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing [Hi-C]

ABSTRACT: NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing [Hi-C]

PROVIDER: PRJNA743646 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15037550_1.fastq.gz	Fastqsanger.gz
	SRR15037550_2.fastq.gz	Fastqsanger.gz
	SRR15037551_1.fastq.gz	Fastqsanger.gz
	SRR15037551_2.fastq.gz	Fastqsanger.gz
	SRR15037552_1.fastq.gz	Fastqsanger.gz

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NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing

Project description:Spatiotemporal regulation of chromatin replication (replication timing, RT） in eukaryotes is critical to maintain the genomic integrity. Here we focused on epigenetic mechanisms in rewiring genomic 3D conformation and replication timing. The results show that the novel lysine β-hydroxybutyrylation (Kbhb) modifications accelerates chromatin replication without inducing replication defects. This effect was mediated by the NAT10, a novel b-hydroxybutyryl-transferase, through regulating the association of NAT10 and CTCF with chromatin. Depletion of NAT10 and NAT10-mediated Kbhb dramatically reduce chromatin-bound NAT10 and CTCF, resulting in reorganization of genomic 3D conformation with enhanced trans- and cis-interaction in Hi-C matrix, with elevated proportion of A compartments, and with reorganized TADs boundaries. Moreover, reorganization of genomic 3D conformation contributes to rewire replication timing. These results support models in which NAT10-mediated β-hydroxybutyrylation coordinates genomic 3D conformation reorganization with replication timing alteration, and emphatically address the concept that epigenetic mechanisms reconcile genomic 3D conformation with replication timing.

2021-09-08 | GSE175731 | GEO

NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing [Hi-C]

2024-07-04 | GSE179410 | GEO

NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing [Replication-seq]

Project description:Spatiotemporal regulation of chromatin replication (replication timing, RT) in eukaryotes is critical to maintain the genomic integrity. Here we focused on epigenetic mechanisms in rewiring genomic 3D conformation and replication timing. The results show that the novel lysine β-hydroxybutyrylation (Kbhb) modifications accelerates chromatin replication without inducing replication defects. This effect was mediated by the NAT10, a novel b-hydroxybutyryl-transferase, through regulating the association of NAT10 and CTCF with chromatin. Depletion of NAT10 and NAT10-mediated Kbhb dramatically reduce chromatin-bound NAT10 and CTCF, resulting in reorganization of genomic 3D conformation with enhanced trans- and cis-interaction in Hi-C matrix, with elevated proportion of A compartments, and with reorganized TADs boundaries. Moreover, reorganization of genomic 3D conformation contributes to rewire replication timing. These results support models in which NAT10-mediated β-hydroxybutyrylation coordinates genomic 3D conformation reorganization with replication timing alteration, and emphatically address the concept that epigenetic mechanisms reconcile genomic 3D conformation with replication timing.

2021-09-08 | GSE176359 | GEO

NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing

Project description:NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing

| PRJNA733454 | ENA

NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing [Replication-seq]

Project description:NAT10-mediated β-hydroxybutyrylation Rewires Genomic 3D Conformation and Replication Timing [Replication-seq]

| PRJNA735959 | ENA

NAT10-mediated β-hydroxybutyrylation Facilitates DNA Replication, Reduces Replication Stress and Genomic Instability

Project description:Accurate DNA replication is essential for genome integrity, with dysregulated replication dynamics, replication stress and genomic instability-hallmarks of cancer and aging. Here, we identify NAT10-mediated β-hydroxybutyrylation (Kbhb) of histones that safeguards replication fork progression, alleviates replication stress, and preserves genomic stability. DNA fiber analyses show β-hydroxybutyrate (BHB) treatment enhances replication efficiency while maintaining fork symmetry, effects abolished by NAT10 depletion or inhibition. BrdU/EdU labeling, FACS analyses reveal that NAT10-mediated Kbhb accelerates replication fork velocity and shortens S-phase duration. LC-MS/MS profiling shows no significant changes in origin firing following BHB treatment. Mechanistically, NAT10-mediated Kbhb modulates chromatin association, thereby modulating chromatin accessibility to establish a replication-permissive environment. This epigenetic remodeling mitigates replication stress markers and genomic instability. Conserved effects in transformed and primary cell models position NAT10 as a metabolic-epigenetic nexus linking nutrient signaling to replication fidelity. Our findings suggest targeting Kbhb signaling as a potential therapeutic strategy against replication stress-associated pathologies.

2025-04-14 | GSE292952 | GEO

NAT10-mediated β-hydroxybutyrylation Facilitates DNA Replication, Reduces Replication Stress and Genomic Instability

Project description:NAT10-mediated β-hydroxybutyrylation Facilitates DNA Replication, Reduces Replication Stress and Genomic Instability

| PRJNA1242228 | ENA

NAT10 inhibition improves cellular phenotypes of Hutchinson-Gilford progeria syndrome by restoring the Transportin-1 pathway

Project description:In this experiment, we aim to examine the role of NAT10 inhibition in Hutchinson-Gilford progeria syndrome (HGPS), a rare but devastating premature ageing syndrome caused by a mutation in the LMNA gene. NAT10 inhibition improves HGPS cellular phenotypes by releasing Transportin-1 (TNPO1) from the cytoplasm, restoring the TNPO1 pathway and allowing hnRNPA1 and NUP153 nuclear import, TPR anchorage at the nuclear pore complexes and RanGTP gradient re-balancing. We have promoted NAT10 inhibition by two ways in normal or patient derived primary skin fibroblasts; the NAT10 inhibitor Remodelin, and an siRNA directly targeting NAT10 (siNAT10). In addition, we have also used an siRNA against TNPO1 and a combined siTNPO1 and siNAT10 treatment. This is a 2-factor design, with treatment (Remodelin vs untreated, or siNAT10 vs siCT) and condition (HGPS vs normal fibroblasts) as the two conditions. Transcriptional profiling was performed using HumanHT-12 v4 Expression BeadChip microarrays, and all conditions were run in triplicate.

2018-06-25 | E-MTAB-6651 | biostudies-arrayexpress

Targeting NAT10 enhances healthspan and lifespan in a mouse model of human accelerated aging syndrome.

Project description:Targeting NAT10 enhances healthspan and lifespan in a mouse model of human accelerated aging syndrome.

2018-03-22 | E-MTAB-6578 | biostudies-arrayexpress

NAT10-ac4C axis promote renal fibrosis

Project description:RNA modification play vital roles in renal fibrosis. However, whether ac4C modification functions in renal fibrogenesis remains unknown. Here, we found that NAT10-ac4C axis plays pro—fibrotic role in kidney. ac4C RIP sequencing demonstrated NAT10-ac4C axis functions via regulating multiple master genes of exosome secretion in tubular epithelial cells. In summary, targeting NAT10-ac4C axis is a promising strategy for renal fibrosis.

2024-11-30 | GSE248203 | GEO

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