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Preconditioning of canine adipose tissue-derived mesenchymal stem cells with deferoxamine potentiates anti-inflammatory effects by directing/reprogramming M2 macrophage polarization.
Veterinary Immunology and Immunopathology ( IF 1.4 ) Pub Date : 2019-11-10 , DOI: 10.1016/j.vetimm.2019.109973
Su-Min Park 1 , Qiang Li 1 , Min-Ok Ryu 1 , Aryung Nam 1 , Ju-Hyun An 1 , Ji-In Yang 1 , Sang-Min Kim 1 , Woo-Jin Song 1 , Hwa-Young Youn 1
Affiliation  

Preconditioning with hypoxia or hypoxia-mimetic agents has been tried with mesenchymal stem cells (MSCs) to improve the secretion of anti-inflammatory factors. These preconditioning procedures upregulate hypoxia inducible factor (HIF) 1-alpha leading to the transcription of HIF-dependent tissue protective and anti-inflammatory genes. Due to the limited number of studies exploring the activity of deferoxamine (DFO)-a hypoxia-mimetic agent-in MSCs, we aimed to determine whether DFO can enhance the secretion of anti-inflammatory substances in canine adipose tissue-derived (cAT)-MSCs. Furthermore, we investigated whether this activity of DFO could affect macrophage polarization and activate anti-inflammatory reactions. cAT-MSCs preconditioned with DFO exhibited enhanced secretion of anti-inflammatory factors such as prostaglandin E2 and tumor necrosis factor-α-stimulated gene-6. To evaluate the interaction between DFO preconditioned cAT-MSCs and macrophages, RAW 264.7 cells were co-cultured with cAT-MSCs using the Transwell system, and changes in the expression of factors related to macrophage polarization were analyzed using the quantitative real-time PCR and western blot assays. When RAW 264.7 cells were co-cultured with DFO preconditioned cAT-MSCs, the expression of M1 and M2 markers decreased and increased, respectively, compared to co-culturing with non-preconditioned cAT-MSCs. Thus, cAT-MSCs preconditioned with DFO can more effectively direct and reprogram macrophage polarization into the M2 phase, an anti-inflammatory state.

中文翻译:

用去铁胺预处理犬脂肪组织来源的间充质干细胞可通过指导/重新编程M2巨噬细胞极化来增强抗炎作用。

已经尝试用间充质干细胞(MSC)进行低氧或模拟低氧剂的预处理,以改善抗炎因子的分泌。这些预处理程序上调缺氧诱导因子(HIF)1-alpha,导致HIF依赖的组织保护和抗炎基因的转录。由于探索缺氧模拟剂去铁胺(DFO)在MSC中的活性的研究数量有限,我们旨在确定DFO是否可以增强犬脂肪组织来源(cAT)中抗炎物质的分泌- MSC。此外,我们调查了DFO的这种活性是否会影响巨噬细胞极化并激活抗炎反应。用DFO预处理的cAT-MSC表现出增强的抗炎因子(如前列腺素E2和肿瘤坏死因子-α刺激的基因6)分泌。为了评估DFO预处理的cAT-MSC与巨噬细胞之间的相互作用,使用Transwell系统将RAW 264.7细胞与cAT-MSC共培养,并使用定量实时PCR和PCR分析与巨噬细胞极化相关的因子表达变化。免疫印迹测定。当与DFO预处理的cAT-MSC共培养RAW 264.7细胞时,与未预处理的cAT-MSC共同培养相比,M1和M2标记的表达分别降低和增加。因此,用DFO预处理的cAT-MSC可以更有效地将巨噬细胞极化引导并重新编程为M2相(一种抗炎状态)。为了评估DFO预处理的cAT-MSC与巨噬细胞之间的相互作用,使用Transwell系统将RAW 264.7细胞与cAT-MSC共培养,并使用定量实时PCR和PCR分析与巨噬细胞极化相关的因子表达变化。免疫印迹测定。当与DFO预处理的cAT-MSC共培养RAW 264.7细胞时,与未预处理的cAT-MSC共同培养相比,M1和M2标记的表达分别降低和增加。因此,用DFO预处理的cAT-MSC可以更有效地将巨噬细胞极化引导并重新编程为M2相(一种抗炎状态)。为了评估DFO预处理的cAT-MSC与巨噬细胞之间的相互作用,使用Transwell系统将RAW 264.7细胞与cAT-MSC共培养,并使用定量实时PCR和PCR分析与巨噬细胞极化相关的因子表达变化。免疫印迹测定。当与DFO预处理的cAT-MSC共培养RAW 264.7细胞时,与未预处理的cAT-MSC共同培养相比,M1和M2标记的表达分别降低和增加。因此,用DFO预处理的cAT-MSC可以更有效地将巨噬细胞极化引导并重新编程为M2相(一种抗炎状态)。并使用定量实时PCR和Western blot分析了与巨噬细胞极化相关的因子表达的变化。当与DFO预处理的cAT-MSC共培养RAW 264.7细胞时,与未预处理的cAT-MSC共同培养相比,M1和M2标记的表达分别降低和增加。因此,用DFO预处理的cAT-MSC可以更有效地将巨噬细胞极化引导并重新编程为M2相(一种抗炎状态)。并使用实时荧光定量PCR和Western blot分析了与巨噬细胞极化相关的因子表达的变化。当与DFO预处理的cAT-MSC共培养RAW 264.7细胞时,与未预处理的cAT-MSC共同培养相比,M1和M2标记的表达分别降低和增加。因此,用DFO预处理的cAT-MSC可以更有效地将巨噬细胞极化引导并重新编程为M2相(一种抗炎状态)。
更新日期:2019-11-01
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