ArticleJournal of cellular physiology2021
Puromycin-sensitive aminopeptidase is required for C2C12 myoblast proliferation and differentiation.
Article in Journal of cellular physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Who cites it
6 citing papers in PubMed, 13 citations in OpenAlex.
- Genetic subtyping of obesity reveals biological insights into the uncoupling of adiposity from its cardiometabolic comorbidities.Nature medicine · 2025Article
- Bestatin attenuates breast cancer stemness by targeting puromycin-sensitive aminopeptidase.Discover oncology · 2024Article
- MicroRNA-142a-3p regulates neurogenic skeletal muscle atrophy by targeting Mef2a.Molecular therapy. Nucleic acids · 2023Article
- Article
- Differences in Vitreous Protein Profiles in Patients With Proliferative Diabetic Retinopathy Before and After Ranibizumab Treatment.Frontiers in medicine · 2022Article
- Puromycin-sensitive aminopeptidase is required for C2C12 myoblast proliferation and differentiation.Journal of cellular physiology · 2021Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The ubiquitin-proteasome system is a major protein degradation pathway in the cell. Proteasomes produce several peptides that are rapidly degraded to free amino acids by intracellular aminopeptidases. Our previous studies reported that proteolysis via proteasomes and aminopeptidases is required for myoblast proliferation and differentiation. However, the role of intracellular aminopeptidases in myoblast proliferation and differentiation had not been clarified. In this study, we investigated the effects of puromycin-sensitive aminopeptidase (PSA) on C2C12 myoblast proliferation and differentiation by knocking down PSA. Aminopeptidase enzymatic activity was reduced in PSA-knockdown myoblasts. Knockdown of PSA induced impaired cell cycle progression in C2C12 myoblasts and accumulation of cells at the G2/M phase. Additionally, after the induction of myogenic differentiation in PSA-knockdown myoblasts, multinucleated circular-shaped myotubes with impaired cell polarity were frequently identified. Cell division cycle 42 (CDC42) knockdown in myoblasts resulted in a loss of cell polarity and the formation of multinucleated circular-shaped myotubes, which were similar to PSA-knockdown myoblasts. These data suggest that PSA is required for the proliferation of myoblasts in the growth phase and for the determination of cell polarity and elongation of myotubes in the differentiation phase.
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Registered trials
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