不同的不朽化角质细胞细胞系表现出不同的能力,在体外分化和重建表皮
Magdalena Jahn1, Victoria Lang1, Sandra Diehl1
1Department of Dermatology, Venerology and Allergology, Goethe University Frankfurt, University Hospital, Frankfurt am Main, Germany.
Experimental dermatology
|December 3, 2023
概括
为了改进表皮模型,开发了工程化永生化角质细胞系 (NHK-SV/TERT和NHK-E6/E7). 在3D模型中,NHK-E6/E7细胞系表现出优异的表皮成熟和分层,与3D模型中的初级角质细胞相比.
科学领域:
- 皮肤病学 皮肤病学
- 细胞生物学 细胞生物学
- 组织工程是组织工程.
背景情况:
- 初级角质细胞对于皮肤学研究至关重要,但面临着可用性,短寿命和捐赠者的变异性等局限性.
- 像HaCaT这样的现有细胞系表现出异常分化和染色体异常,阻碍了它们作为可靠的体内模型的使用.
- 需要强大,可复制的细胞模型来准确研究表皮功能和机制.
研究的目的:
- 验证工程化永生的人类角质细胞细胞系作为表皮研究的改进模型.
- 将NHK-SV/TERT和NHK-E6/E7细胞系的生长和分化行为与二维和三维培养中的初级角质细胞进行比较.
- 评估这些工程细胞系形成功能性表皮屏障的能力.
主要方法:
- 永久化的角质细胞细胞系的产生:NHK-SV/TERT (表达SV40大T抗原和hTERT) 和NHK-E6/E7 (转化为HPV E6/E7).
- 在2D培养中分析细胞增殖,接触抑制和分化,使用Ca2+开关和撤回增殖信号等刺激.
- 在3D培养系统中评估表皮复合和屏障功能.
主要成果:
- 两种工程细胞系都表现出强大的增殖,同时保持对接触抑制的敏感性.
- 在Ca2+切换时NHK-E6/E7细胞分化,而NHK-SV/TERT细胞在撤回增殖信号后显示分化延迟.
- 在3D模型中,两种细胞系都形成了分层表皮和功能障碍,但NHK-E6 / E7紧密模仿了初级角质细胞的成熟和分层.
结论:
- 在皮肤学研究中,工程化不朽化角质细胞细胞系为原始细胞提供了可行的替代方案.
- NHK-E6/E7细胞系为表皮分化和分层提供了一个比NHK-SV/TERT更准确和可比的模型.
- 这些经过验证的细胞系可以通过克服初级细胞的局限性来推进表皮功能和疾病机制的研究.
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