Flavie Ouali BE, Wang HV. Beta-agonist drugs modulate the proliferation and differentiation of skeletal muscle cells
in vitro.
Biochem Biophys Rep 2021;
26:101019. [PMID:
34041371 PMCID:
PMC8144337 DOI:
10.1016/j.bbrep.2021.101019]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/29/2021] [Accepted: 05/07/2021] [Indexed: 02/04/2023] Open
Abstract
Essentially employed for the treatment of airway obstructions in humans, β-agonists are also known to have an anabolic effect in animals’ skeletal muscle. In vivo and in vitro studies have attested the increase in animal body mass and the hypertrophy of muscle cells following the administration of specific β-agonists. However, the contribution of β-agonists to C2C12 myoblasts growth remains obscure. We therefore aimed to investigate the impact of β1-and β2-agonist drugs on the proliferation and differentiation of skeletal muscle cells. Direct observations and cytotoxicity assay showed that clenbuterol, salbutamol, cimaterol and ractopamine enhanced muscle cell growth and viability during the proliferation stage. Structural examinations coupled to Western blot analysis indicated that salbutamol and cimaterol triggered a decrease in myotube formation. A better comprehension of the effect of β-agonists on myogenic regulatory genes in the muscle cells is crucial to establish a specific role of β-agonists in muscle development, growth, and regeneration.
Clenbuterol, salbutamol, cimaterol, and ractopamine induce molecular responses in C2C12.
Beta-agonists promote cell's attachment, viability, and proliferation during muscle cell proliferation stage.
Salbutamol and cimaterol inhibit the formation of myotubes during differentiation stage.
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