Stirm, M.* ; Shashikadze, B.* ; Blutke, A.* ; Kemter, E.* ; Lange, A.* ; Stöckl, J.B.* ; Jaudas, F.* ; Laane, L.* ; Kurome, M.* ; Keßler, B.* ; Zakhartchenko, V.* ; Bähr, A.* ; Klymiuk, N.* ; Nagashima, H.* ; Walter, M.* ; Wurst, W. ; Kupatt, C.* ; Fröhlich, T.* ; Wolf, E.*
Systemic deletion of DMD exon 51 rescues clinically severe Duchenne muscular dystrophy in a pig model lacking DMD exon 52.
Proc. Natl. Acad. Sci. U.S.A. 120:e2301250120 (2023)
Duchenne muscular dystrophy (DMD) is a fatal X-linked disease caused by mutations in the DMD gene, leading to complete absence of dystrophin and progressive degeneration of skeletal musculature and myocardium. In DMD patients and in a corresponding pig model with a deletion of DMD exon 52 (DMDΔ52), expression of an internally shortened dystrophin can be achieved by skipping of DMD exon 51 to reframe the transcript. To predict the best possible outcome of this strategy, we generated DMDΔ51-52 pigs, additionally representing a model for Becker muscular dystrophy (BMD). DMDΔ51-52 skeletal muscle and myocardium samples stained positive for dystrophin and did not show the characteristic dystrophic alterations observed in DMDΔ52 pigs. Western blot analysis confirmed the presence of dystrophin in the skeletal muscle and myocardium of DMDΔ51-52 pigs and its absence in DMDΔ52 pigs. The proteome profile of skeletal muscle, which showed a large number of abundance alterations in DMDΔ52 vs. wild-type (WT) samples, was normalized in DMDΔ51-52 samples. Cardiac function at age 3.5 mo was significantly reduced in DMDΔ52 pigs (mean left ventricular ejection fraction 58.8% vs. 70.3% in WT) but completely rescued in DMDΔ51-52 pigs (72.3%), in line with normalization of the myocardial proteome profile. Our findings indicate that ubiquitous deletion of DMD exon 51 in DMDΔ52 pigs largely rescues the rapidly progressing, severe muscular dystrophy and the reduced cardiac function of this model. Long-term follow-up studies of DMDΔ51-52 pigs will show if they develop symptoms of the milder BMD.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Becker Muscular Dystrophy ; Duchenne Muscular Dystrophy ; Exon Skipping ; Pathology ; Pig Model; Skipping Therapy; Mouse Model; Muscle; Quantification; Expression; Database
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2023
Prepublished im Jahr
0
HGF-Berichtsjahr
2023
ISSN (print) / ISBN
0027-8424
e-ISSN
1091-6490
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 120,
Heft: 29,
Seiten: ,
Artikelnummer: e2301250120
Supplement: ,
Reihe
Verlag
National Academy of Sciences
Verlagsort
2101 Constitution Ave Nw, Washington, Dc 20418 Usa
Tag d. mündl. Prüfung
0000-00-00
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Gutachter
Prüfer
Topic
Hochschule
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
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Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30204 - Cell Programming and Repair
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-500500-001
Förderungen
European Research Council (ERC)
ForTragGmbH fur Forschungstransfer der EKFS
Deutsche Forschungsgemeinschaft
European Research Council
European Union
Else Kroner-Fresenius-Stiftung (EKFS)
Bayerische Forschungsstiftung
Copyright
Erfassungsdatum
2023-10-06