Study summary · research use only
Splicing factor-modulated generation of mechano growth factor regulates physiological processes in osteoblasts under mechanical stimuli
Plain-language summary
Paraphrased from the published abstract below — not a verdict on whether anything works.
This in vitro study (species not specified) examined mechano-growth factor (MGF), a splicing variant of insulin-like growth factor 1, in osteoblasts subjected to mechanical stimuli. The abstract reports that MGF promoted proliferation and migration of osteoblasts while inhibiting their differentiation via the Erk1/2 pathway, and that cyclic stretching upregulated expression of ASF/SF2, which in turn regulated MGF expression. The authors describe mechanical stimuli as influencing osteoblast physiological responses by increasing MGF expression, regulated by splicing factors.
Abstract
Mechanical stimuli influence various physiological processes in osteoblasts. We previously showed that mechano-growth factor (MGF), a splicing variant of insulin-like growth factor 1, is highly expressed in osteoblasts in response to mechanical stimuli. This study aims to explore the systemic functions of MGF in osteoblasts, and the mechanisms by which mechanical stress regulates the alternative splicing of Igf1 to generate MGF. We found that MGF promoted the proliferation and migration of osteoblasts, while it inhibited their differentiation via Erk1/2 pathway. Furthermore, cyclic stretching upregulated the expression of ASF/SF2, which in turn regulated the expression of MGF. Our findings indicate that mechanical stimuli influence the physiological responses of osteoblasts by increasing the expression of MGF, which is regulated by splicing factors.
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