The role of LMNA mutations in myogenic differentiation of C2C12 and primary satellite cells

Nuclear lamins form nuclear lamina located under the inner nuclear membrane. It was believed that the nuclear lamina plays predominantly a structural role. Recently, its involvement in regulatory processes have been described, e.g., chromatin organization and gene transcription. It is known that mut...

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Published inCell and tissue biology Vol. 11; no. 3; pp. 213 - 219
Main Authors Perepelina, K. I., Smolina, N. A., Zabirnik, A. S., Dmitrieva, R. I., Malashicheva, A. B., Kostareva, A. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.05.2017
Springer Nature B.V
Subjects
Biomedical and Life Sciences
Cardiomyopathy
Cell Biology
Chromatin
Cytology
Dilated cardiomyopathy
Genomes
Immunofluorescence
Lamins
Life Sciences
Mesenchyme
Muscular dystrophy
Mutation
Myogenesis
Myotubes
Satellite cells
Transcription
С2С12 cell line
laminopathies
muscle differentiation
primary satellite cells
nuclear lamins
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Summary:Nuclear lamins form nuclear lamina located under the inner nuclear membrane. It was believed that the nuclear lamina plays predominantly a structural role. Recently, its involvement in regulatory processes have been described, e.g., chromatin organization and gene transcription. It is known that mutations in the LMNA gene lead to development of laminopathies, primarily affecting tissues of mesenchymal origin. Today, the mechanisms of the lamina regulation of cell differentiation are largely unknown. In the present work, we studied the effect of LMNA gene mutations on the process of muscle differentiation of primary satellite cells and in С2С12 cell line. The genome of satellite and С2С12 cells was modified by cell transduction via lentiviral constructs encoding LMNA G232E associated with the development of Emery–Dreyfus muscular dystrophy and LMNA R571S associated with the development of dilated cardiomyopathy. Cell morphology was assessed with immunofluorescence, and expression of myogenic genes was analyzed by qPCR. We showed that the analyzed mutations reduced the cell ability to differentiate (to fuse and to form myotubes). We proposed that these mutations enhanced expression of early and reduced expression of late markers of myogenesis. Thus, mutations in nuclear lamins can modify the process of muscle differentiation.
ISSN:1990-519X
1990-5203
DOI:10.1134/S1990519X17030087