Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants

Brodehl A, Hedde PN, Dieding M, Fatima A, Walhorn V, Gayda S, Saric T, Klauke B, Gummert J, Anselmetti D, Heilemann M, et al. (2012)
Journal of Biological Chemistry 287(19): 16047-16057.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Mutations in the DES gene coding for the intermediate filament protein desmin may cause skeletal and cardiac myopathies, which are frequently characterized by cytoplasmic aggregates of desmin and associated proteins at the cellular level. By atomic force microscopy, we demonstrated filament formation defects of desmin mutants, associated with arrhythmogenic right ventricular cardiomyopathy. To understand the pathogenesis of this disease, it is essential to analyze desmin filament structures under conditions in which both healthy and mutant desmin are expressed at equimolar levels mimicking an in vivo situation. Here, we applied dual color photoactivation localization microscopy using photoactivatable fluorescent proteins genetically fused to desmin and characterized the heterozygous status in living cells lacking endogenous desmin. In addition, we applied fluorescence resonance energy transfer to unravel short distance structural patterns of desmin mutants in filaments. For the first time, we present consistent high resolution data on the structural effects of five heterozygous desmin mutations on filament formation in vitro and in living cells. Our results may contribute to the molecular understanding of the pathological filament formation defects of heterozygous DES mutations in cardiomyopathies.
Erscheinungsjahr
2012
Zeitschriftentitel
Journal of Biological Chemistry
Band
287
Ausgabe
19
Seite(n)
16047-16057
ISSN
0021-9258
eISSN
1083-351X
Page URI
https://pub.uni-bielefeld.de/record/2500819

Zitieren

Brodehl A, Hedde PN, Dieding M, et al. Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants. Journal of Biological Chemistry. 2012;287(19):16047-16057.
Brodehl, A., Hedde, P. N., Dieding, M., Fatima, A., Walhorn, V., Gayda, S., Saric, T., et al. (2012). Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants. Journal of Biological Chemistry, 287(19), 16047-16057. doi:10.1074/jbc.M111.313841
Brodehl, A., Hedde, P. N., Dieding, M., Fatima, A., Walhorn, V., Gayda, S., Saric, T., Klauke, B., Gummert, J., Anselmetti, D., et al. (2012). Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants. Journal of Biological Chemistry 287, 16047-16057.
Brodehl, A., et al., 2012. Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants. Journal of Biological Chemistry, 287(19), p 16047-16057.
A. Brodehl, et al., “Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants”, Journal of Biological Chemistry, vol. 287, 2012, pp. 16047-16057.
Brodehl, A., Hedde, P.N., Dieding, M., Fatima, A., Walhorn, V., Gayda, S., Saric, T., Klauke, B., Gummert, J., Anselmetti, D., Heilemann, M., Nienhaus, G.U., Milting, H.: Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants. Journal of Biological Chemistry. 287, 16047-16057 (2012).
Brodehl, Andreas, Hedde, Per Niklas, Dieding, Mareike, Fatima, Azra, Walhorn, Volker, Gayda, Susan, Saric, Tomo, Klauke, Bärbel, Gummert, Jan, Anselmetti, Dario, Heilemann, Mike, Nienhaus, Gerd Ulrich, and Milting, Hendrik. “Dual Color Photoactivation Localization Microscopy of Cardiomyopathy-associated Desmin Mutants”. Journal of Biological Chemistry 287.19 (2012): 16047-16057.

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