WFRF:(Jin YH)
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- Chernogubova, EKarolinska Institutet (author)
Genetic Depletion of the Long Non-coding RNA H19 in Mice Protects from Elastase-induced Abdominal Aortic Aneurysms
- Article/chapterEnglish2018
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- Ovid Technologies (Wolters Kluwer Health),2018
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- LIBRIS-ID:oai:prod.swepub.kib.ki.se:142701224
- http://kipublications.ki.se/Default.aspx?queryparsed=id:142701224URI
- https://doi.org/10.1161/atvb.38.suppl_1.677DOI
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- Language:English
- Summary in:English
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- Long noncoding RNAs (lncRNAs) have been shown as crucial molecular regulators in various biological processes and diseases. Recently we demonstrated that lncRNA H19 is highly upregulated during abdominal aortic aneurysm (AAA) development and progression in murine models (Angiotensin II in ApoE-/- mice; porcine pancreatic elastase model (PPE) in C57BL/6 mice). Experimental H19 knock-down using specific antisense LNA oligonucleotides showed a significant reduction in AAA growth in both models. Aim of this current study was to utilize genetically mutated H19-depleted mice (H19-/-) vs. wildtype littermate controls, to assess their behavior upon experimental AAA induction using PPE. In addition, we studied the proliferation rates of smooth muscle cells, originating from either H19-/- or H19+/+ mice in a kinetic live-cell imaging system. H19-/- on a C57BL/6J background were exposed to PPE. The aortic diameter in H19-/- mice was compared to WT littermate controls (upon PPE-AAA induction) at baseline, and then consecutively at days 7, 14, and 28. Primary mouse aortic smooth muscle cells were isolated from wild type or H19-depleted aortas, and cultured and monitored in the IncuCyte live cell imaging system for 48 hours, in an effort to study their proliferation rate. H19-/- mice upon PPE-AAA induction displayed significantly lower diameters throughout the study compared to WT controls. Primary aortic smooth muscle cells from H19-depleted mice showed greatly increased proliferation rates (based on cell confluency detection) in our kinetic live-cell imaging system in comparison to WT control cells. In conclusion, our study in H19-depleted mice supports our previously presented efforts, that H19 is an important contributor to experimental AAA development and progression. Further mechanistic studies will have to reveal the molecular properties of this long non-coding RNA in smooth muscle cell survival and proliferation.
Added entries (persons, corporate bodies, meetings, titles ...)
- Busch, A (author)
- Li, YH (author)
- Jin, H (author)
- Winski, G (author)
- Hofmann, P (author)
- Boon, RA (author)
- Backlund, A (author)
- Maegdefessel, LKarolinska Institutet (author)
- Karolinska Institutet (creator_code:org_t)
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- In:ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY: Ovid Technologies (Wolters Kluwer Health)381079-56421524-4636
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