低强度脉冲超声调节脂肪干细胞分化。

Low Intensity Pulsed Ultrasounds Modulate Adipose Stem Cells Differentiation.

作者信息

Fernández-Marcelo Tamara, Calero Alba, de Lucas Beatriz, Garrido María, Arregui Raúl L, Sury Paulina, Quintana Elena, Pérez Laura M, Fernández-Millán Elisa, Gálvez Beatriz G

机构信息

Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Universidad Complutense de Madrid, Madrid, Spain.

Faculty of Sports Sciences, Universidad Europea de Madrid, Madrid, Spain.

出版信息

Stem Cell Rev Rep. 2025 May 23. doi: 10.1007/s12015-025-10896-7.

Abstract

LIPUS, low intensity pulsed ultrasounds, are considered a safe and non-invasive tool that have been used extensively in medicine for chronic diseases. We evaluated the effects produced by LIPUS on the physiological behaviour of mouse and human adipose stem cells (ASCs) as well as on adipose tissue explants. LIPUS stimulation for one minute did not affect mouse or human ASC proliferation or apoptosis, with no evident changes in morphology or cell growth. Further, RNA-seq analysis revealed more than 200 genes differentially expressed after ultrasound stimulation of mouse and human ASCs. Among them, the changes in gene expression mainly belong to the canonical pathways of stemness, energy metabolism or chemokine signalling. On the other hand, the migration ability of mouse and human ASCs was partially affected by the ultrasound protocol, slightly increasing their capacity to migrate, while maintaining their stemness properties. Major affection was detected on the adipocyte differentiation capacity. Indeed, LIPUS-treated ASCs were unable to differentiate into mature adipocytes and their inflammatory secretion profile was reduced in both mouse and human ASCs. These effects were confirmed on an ex vivo model of adipose tissue explants, demonstrating that LIPUS also provoked an anti-inflammatory profile in the adipose tissue while reducing adipocytes differentiation and lipids content. Overall, the strong adipogenesis blockade, the reduction of their secretion profile and the RNA-seq analysis suggest that LIPUS-treated ASCs may be prevented from differentiating into mature adipocytes and from exacerbating inflammation, thus limiting their contribution to obesity.

摘要

低强度脉冲超声(LIPUS)被认为是一种安全且无创的工具,已在医学中广泛用于治疗慢性疾病。我们评估了LIPUS对小鼠和人类脂肪干细胞(ASC)的生理行为以及对脂肪组织外植体的影响。LIPUS刺激一分钟并未影响小鼠或人类ASC的增殖或凋亡,其形态或细胞生长也无明显变化。此外,RNA测序分析显示,在对小鼠和人类ASC进行超声刺激后,有200多个基因差异表达。其中,基因表达的变化主要属于干性、能量代谢或趋化因子信号传导的典型途径。另一方面,小鼠和人类ASC的迁移能力部分受到超声方案的影响,其迁移能力略有增加,同时保持其干性。在脂肪细胞分化能力方面检测到主要影响。事实上,经LIPUS处理的ASC无法分化为成熟脂肪细胞,并且在小鼠和人类ASC中其炎症分泌谱均降低。这些效应在脂肪组织外植体的体外模型中得到证实,表明LIPUS在减少脂肪细胞分化和脂质含量的同时,还在脂肪组织中引发了抗炎作用。总体而言,强烈的脂肪生成阻滞、分泌谱的降低以及RNA测序分析表明,经LIPUS处理的ASC可能无法分化为成熟脂肪细胞并加剧炎症,从而限制其对肥胖的影响。

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