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- W4386998411 abstract "The Linker of Nucleoskeleton and Cytoskeleton (LINC) complex serves to connect the nuclear envelope and the cytoskeleton, influencing cellular processes such as nuclear arrangement, architecture, and mechanotransduction. The role LINC plays in mechanotransduction pathways in bone progenitor cells has been well studied; however, the mechanisms by which LINC complexes govern in vivo bone formation remain less clear. To bridge this knowledge gap, we established a murine model disrupting LINC using transgenic Prx-Cre mice and floxed Tg(CAG-LacZ/EGFP-KASH2) mice. Prx-Cre mice express the Cre recombinase enzyme controlled by the paired-related homeobox gene-1 promoter, a pivotal regulator of skeletal development. Tg(CAG-LacZ/EGFP-KASH2) mice carry a lox-stop-lox flanked LacZ gene allowing for the overexpression of an EGFP-KASH2 fusion protein via cre recombinase mediated deletion of the LacZ cassette. This disrupts endogenous Nesprin-Sun binding in a dominant negative manner disconnecting nesprin from the nuclear envelope. By combining these lines, we generated a Prrx1(+) cell-specific LINC disruption model to study its impact on the developing skeleton and subsequently exercise-induced bone accrual. The findings presented here indicate Prx-driven LINC disruption (PDLD) cells exhibit no change in osteogenic and adipogenic potential compared to controls in vitro nor are there bone quality changes when compared to in sedentary animals at 8 weeks. Although PDLD animals displayed increased voluntary running activity, a 6-week exercise intervention did not significantly alter bone microarchitecture or mechanical properties." @default.
- W4386998411 created "2023-09-25" @default.
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- W4386998411 date "2023-09-24" @default.
- W4386998411 modified "2023-10-11" @default.
- W4386998411 title "Prrx1-driven LINC complex disruption in vivo does not significantly alter bone properties in 8-week male mice nor after 6-weeks voluntary wheel running" @default.
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- W4386998411 doi "https://doi.org/10.1101/2023.09.22.559054" @default.
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