Upregulation of chemokine (C-C motif) ligand 20 in adult epidermal keratinocytes in direct current electric fields.

Upregulation of chemokine (C-C motif) ligand 20 in adult epidermal keratinocytes in direct current electric fields.
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DOI:
10.1007/s00403-009-0995-x
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发表时间:
2010-04
影响因子:
3
通讯作者:
Feldman DS
Feldman DS
中科院分区:
医学3区
文献类型:
--
作者:
Jennings JA;Chen D;Feldman DS

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正常愈合伤口中存在约 100 mV/mm 的电场 (EF),可诱导上皮细胞定向迁移。因此,伤口愈合过程中的上皮化可能部分由该电信号控制。在这项研究中,使用微阵列检查了人表皮角质形成细胞对 EF 的早期转录反应。各种趋化因子、白细胞介素和其他炎症反应基因的表达增加表明 EF 刺激角质形成细胞活化和免疫刺激活性。基因表达活性进一步表明白细胞介素 1 在 EF 中被释放或激活。趋化因子 CCL20 的表达随着时间的推移以 100 mV/mm 稳定增加,直到暴露后约 8 小时。该趋化因子也在 300 mV/mm 的场强下表达,高于内源性伤口场的水平。这些研究中发现的 EF 对上皮基因表达活性的早期影响表明,天然存在的 EF 在修复机制中以及在治疗上控制这些反应的可能性中都具有重要意义。
Electric fields (EFs) of around 100 mV/mm are present in normal healing wounds and induce the directional migration of epithelial cells. Reepithelialization during wound healing thus may be controlled in part by this electrical signal. In this study, the early transcriptional response of human epidermal keratinocytes to EFs is examined using microarrays. Increased expression of various chemokines, interleukins, and other inflammatory response genes indicates that EFs stimulate keratinocyte activation and immune stimulatory activity. Gene expression activity further suggests that interleukin 1 is either released or activated in EFs. Expression of the chemokine CCL20 steadily increases at 100 mV/mm over time until around 8 h after exposure. This chemokine is also expressed at field strengths of 300 mV/mm—above the level of endogenous wound fields. The early effects of EFs on epithelial gene expression activity identified in these studies suggest the importance of naturally occurring EFs both in repair mechanisms and for the possibility of controlling these responses therapeutically.
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