Proteomic analysis of haptenation by skin sensitisers: Diphencyprone and ethyl acrylate.

Proteomic analysis of haptenation by skin sensitisers: Diphencyprone and ethyl acrylate.
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皮肤致敏剂:联苯环酮和丙烯酸乙酯的半抗原化的蛋白质组学分析。

DOI:
10.1016/j.tiv.2019.104697
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发表时间:
2020
期刊:
an international journal published in association with BIBRA
影响因子:
--
通讯作者:
Parkinson E
Parkinson E
中科院分区:
--
文献类型:
--
作者:
Parkinson E

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与过敏性接触性皮炎(ACD)发生相关的皮肤致敏的潜在风险是个人护理产品中使用的新成分的安全性评估中的一个考虑因素。致敏化学物质引起的皮肤蛋白质半抗原化是引起皮肤致敏的分子起始事件。目前用于监测皮肤致敏的方法依赖于有限的反应性测定,激发了对开发蛋白质组学方法以修饰皮肤半抗原组的兴趣。使用蛋白质组学增加我们对皮肤致敏和ACD的机械理解,为开发非动物预测方法和/或风险评估方法提供了机会。在此之前,我们已经使用了一种新的稳定同位素标记的方法结合数据独立质谱(HDMSE)来识别一些众所周知的敏化剂的半抗原组。我们现在已经扩展了这项工作,通过表征敏化剂二苯基环丙烯酮(DPCP)和丙烯酸乙酯(EA)与模型蛋白人血清白蛋白(HSA)和皮肤角质形成细胞,HaCaT细胞系的复合物裂解物的半抗原组。我们表明,在复杂的亲核模型中的半抗原化不是随机的,而是一个特定的,低水平的和可重复的事件。蛋白质组学分析扩展了我们对致敏剂反应性的理解,超越了简单的反应性测定,并提供了一种监测活细胞中半抗原化的途径。
The potential risk of skin sensitisation, associated with the development of allergic contact dermatitis (ACD), is a consideration in the safety assessment of new ingredients for use in personal care products. Protein haptenation in skin by sensitising chemicals is the molecular initiating event causative of skin sensitisation. Current methods for monitoring skin sensitisation rely on limited reactivity assays, motivating interest in the development of proteomic approaches to characterise the skin haptenome. Increasing our mechanistic understanding of skin sensitisation and ACD using proteomics presents an opportunity to develop non-animal predictive methods and/or risk assessment approaches. Previously, we have used a novel stable isotope labelling approach combined with data independent mass spectrometry (HDMSE) to characterise the haptenome for a number of well-known sensitisers. We have now extended this work by characterising the haptenome of the sensitisers Diphenylcyclopropenone (DPCP) and Ethyl Acrylate (EA) with the model protein Human Serum Albumin (HSA) and the complex lysates of the skin keratinocyte, HaCaT cell line. We show that haptenation in complex nucleophilic models is not random, but a specific, low level and reproducible event. Proteomic analysis extends our understanding of sensitiser reactivity beyond simple reactivity assays and offers a route to monitoring haptenation in living cells.
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