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Se-methylselenocysteine stimulates migration and antioxidant response in HaCaT keratinocytes: Implications for wound healing.
Journal of Trace Elements in Medicine and Biology ( IF 3.5 ) Pub Date : 2019-11-04 , DOI: 10.1016/j.jtemb.2019.126426
Dongsoo Kim 1 , Bonhee Ku 2 , Eun-Mi Choi 3
Affiliation  

BACKGROUND Se-methylselenocysteine (MSC), a natural organic selenium compound, is known for its anticancer effects. In the present study, we investigated the effects of MSC on cell migration, which is the most limiting step in the reepithelialization process of wound healing and the antioxidant response in HaCaT keratinocytes. METHODS HaCaT cells were treated with various concentrations of MSC. Cell migration and proliferation, the expression of proteins that are involved in the epidermal-mesenchymal transition (EMT) process, the extent of oxidative stress and the antioxidant response, and the associated signaling pathways were analyzed. RESULTS MSC (100-500 μM) increased HaCaT cell migration. MSC stimulated EMT, which was evidenced by a decrease in E-cadherin in the cells at the wound edge and increases in Snail, Twist, and matrix metalloproteinases. MSC increased the phosphorylation of Akt and glycogen synthase kinase 3β, which led to the stabilization and nuclear accumulation of β-catenin, a transcriptional coactivator involved in EMT. MSC caused a transient increase and then an eventual decrease in cellular reactive oxygen species, which appeared to be associated with the increase in nuclear factor erythroid 2-related factor 2, a key transcription factor for the antioxidant response. CONCLUSION Our results suggest that MSC can promote skin wound healing by stimulating keratinocyte migration and, moreover, can protect cells from excessive oxidative stress that often accompanies and impairs the wound healing process, particularly in chronic wounds, by stimulating an antioxidant response.

中文翻译:

硒甲基硒代半胱氨酸刺激HaCaT角质形成细胞迁移和抗氧化反应:对伤口愈合的影响。

背景技术天然有机硒化合物硒-甲基硒代半胱氨酸(MSC)以其抗癌作用而闻名。在本研究中,我们研究了MSC对细胞迁移的影响,这是伤口愈合再上皮化过程中最有限的步骤,并且是HaCaT角质形成细胞的抗氧化反应。方法用不同浓度的MSC处理HaCaT细胞。分析了细胞迁移和增殖,参与表皮-间质转化(EMT)过程的蛋白质表达,氧化应激和抗氧化反应的程度以及相关的信号传导途径。结果MSC(100-500μM)增加了HaCaT细胞的迁移。MSC刺激了EMT,伤口边缘细胞中的E-钙黏着蛋白减少,而Snail,Twist,和基质金属蛋白酶。MSC增强了Akt和糖原合酶激酶3β的磷酸化,从而导致了β-catenin(参与EMT的转录共激活因子)的稳定和核积累。MSC引起细胞内活性氧的短暂增加,然后最终减少,这似乎与核因子红系2相关因子2(抗氧化反应的关键转录因子)的增加有关。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激的影响,特别是在慢性伤口中。MSC增强了Akt和糖原合酶激酶3β的磷酸化,从而导致了β-catenin(参与EMT的转录共激活因子)的稳定和核积累。MSC引起细胞内活性氧的短暂增加,然后最终减少,这似乎与核因子红系2相关因子2(抗氧化反应的关键转录因子)的增加有关。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激(特别是在慢性伤口中)。MSC增强了Akt和糖原合酶激酶3β的磷酸化,从而导致了β-catenin(参与EMT的转录共激活因子)的稳定和核积累。MSC引起细胞内活性氧的短暂增加,然后最终减少,这似乎与核因子红系2相关因子2(抗氧化反应的关键转录因子)的增加有关。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激(特别是在慢性伤口中)。参与EMT的转录共激活因子。MSC引起细胞内活性氧的短暂增加,然后最终减少,这似乎与核因子红系2相关因子2(抗氧化反应的关键转录因子)的增加有关。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激的影响,特别是在慢性伤口中。参与EMT的转录共激活因子。MSC引起细胞内活性氧的短暂增加,然后最终减少,这似乎与核因子红系2相关因子2(抗氧化反应的关键转录因子)的增加有关。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激(特别是在慢性伤口中)。抗氧化反应的关键转录因子。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激的影响,特别是在慢性伤口中。抗氧化反应的关键转录因子。结论我们的结果表明,MSC可以通过刺激角质形成细胞迁移来促进皮肤伤口愈合,并且可以通过刺激抗氧化反应来保护细胞免受通常伴随和损害伤口愈合过程的过度氧化应激(特别是在慢性伤口中)。
更新日期:2019-11-04
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