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dc.contributor.authorPabba, Maruthi K.
dc.contributor.authorMeyer, Janis
dc.contributor.authorCelikay, Kerem
dc.contributor.authorSchermelleh, Lothar
dc.contributor.authorRohr, Karl
dc.contributor.authorM. Cristina, Cardoso
dc.date.accessioned2024-03-25T15:00:52Z
dc.date.available2024-03-25T15:00:52Z
dc.date.issued2024-02-16
dc.identifier.urihttps://tudatalib.ulb.tu-darmstadt.de/handle/tudatalib/4192
dc.identifier.urihttps://doi.org/10.48328/tudatalib-1398
dc.descriptionThe dynamics of DNA in the cell nucleus plays a role in cellular processes and fates but the interplay of DNA mobility with the hierarchical levels of DNA organization is unexplored. Here, we made use of DNA replication to directly label genomic DNA in an unbiased genome-wide manner. This was followed by live-cell time-lapse microscopy of the labeled DNA combining imaging at different resolutions levels simultaneously and allowing to trace DNA motion across organization levels within the same cells. Quantification of the labeled DNA segments at different microscopic resolution levels revealed sizes comparable to the ones reported for DNA loops using 3D super-resolution microscopy, topological associated domains (TAD) using 3D wide-field microscopy and also entire chromosomes. By employing advanced chromatin tracking and image registration, we discovered that DNA exhibited higher mobility at the individual loop level compared to the TAD level and even less at the chromosome level. Additionally, our findings indicate that chromatin movement, regardless of the resolution, slowed down during the S-phase of the cell cycle compared to the G1/G2 phases. Furthermore, we found that a fraction of DNA loops and TADs exhibited directed movement with the majority depicting constrained movement. Our data also indicated spatial mobility differences with DNA loops and TADs at the nuclear periphery and the nuclear interior exhibiting lower velocity and radius of gyration than the intermediate locations. Based on these insights, we propose that there is a link between DNA mobility and its organizational structure including spatial distribution, which impacts cellular processes.de_DE
dc.language.isoende_DE
dc.rightsCreative Commons Attribution-NonCommercial 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectImage registrationde_DE
dc.subjectlive cell DNA labelingde_DE
dc.subjectmotion analysisde_DE
dc.subjectsingle particle trackingde_DE
dc.subjectsuper-resolution microscopyde_DE
dc.subjectwide-field microscopyde_DE
dc.subject.classification201-03 Zellbiologiede_DE
dc.subject.ddc570
dc.titleDNA choreography: correlating mobility and organization of DNA across different resolutions from loops to chromosomesde_DE
dc.typeDatasetde_DE
dc.typeImagede_DE
dc.description.versionfor reviewde_DE
tud.unitTUDa


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Creative Commons Attribution-NonCommercial 4.0
Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial 4.0