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Updated: Jun 28, 2026

Preparation of 3D Decellularized Matrices from Fetal Mouse Skeletal Muscle for Cell Culture
Published on: March 3, 2023
Prelamin A is involved in early steps of muscle differentiation
Cristina Capanni1, Rosalba Del Coco, Stefano Squarzoni
1IGM-CNR, Unit of Bologna, c/o IOR, Via di Barbiano 1/10 I-40136 Bologna, Italy.
Abstract:
Lamin A is a nuclear lamina constituent implicated in a number of human disorders including Emery-Dreifuss muscular dystrophy. Since increasing evidence suggests a role of the lamin A precursor in nuclear functions, we investigated the processing of prelamin A during differentiation of C2C12 mouse myoblasts. We show that both protein levels and cellular localization of prelamin A are modulated during myoblast activation. Similar changes of lamin A-binding proteins emerin and LAP2alpha were observed. Furthermore, prelamin A was found in a complex with LAP2alpha in differentiating myoblasts. Prelamin A accumulation in cycling myoblasts by expressing unprocessable mutants affected LAP2alpha and PCNA amount and increased caveolin 3 mRNA and protein levels, while accumulation of prelamin A in differentiated muscle cells following treatment with a farnesyl transferase inhibitor appeared to inhibit caveolin 3 expression. Our data provide evidence for a critical role of the lamin A precursor in the early steps of muscle cell differentiation.
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