Quantitation of peptides from non-invasive skin tapings using isotope dilution and tandem mass spectrometry.
Quantitation of peptides from non-invasive skin tapings using isotope dilution and tandem mass spectrometry.
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DOI:
10.1016/j.jchromb.2018.03.031
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发表时间:
2018-05-01
期刊:
影响因子:
--
通讯作者:
Reisdorph R
中科院分区:
文献类型:
--
作者:
Reisdorph N;Armstrong M;Powell R;Quinn K;Legg K;Leung D;Reisdorph R
Previous work from our laboratories utilized a novel skin taping method and mass spectrometry-based proteomics to discover clinical biomarkers of skin conditions; these included atopic dermatitis, Staphylococcus aureus colonization, and eczema herpeticum. While suitable for discovery purposes, semi-quantitative proteomics is generally time-consuming and expensive. Furthermore, depending on the method used, discovery-based proteomics can result in high variation and inadequate sensitivity to detect low abundant peptides. Therefore, we strove to develop a rapid, sensitive, and reproducible method to quantitate disease-related proteins from skin tapings. We utilized isotopically-labeled peptides and tandem mass spectrometry to obtain absolute quantitation values on 14 peptides from 7 proteins; these proteins had shown previous importance in skin disease. The method demonstrated good reproducibility, dynamic range, and linearity (R2 > 0.993) when n=3 standards were analyzed across 0.05-2.5 pmol. The method was used to determine if differences exist between skin proteins in a small group of atopic versus non-atopic individuals (n=12). While only minimal differences were found, peptides were detected in all samples and exhibited good correlation between peptides for 5 of the 7 proteins (R2 = 0.71 – 0.98). This method can be applied to larger cohorts to further establish the relationships of these proteins to skin disease.
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影响因子:
2.9
作者:
Legg, Kevin M.;Powell, Roger;Danielson, Phillip B.
通讯作者:
Danielson, Phillip B.
影响因子:
2.9
作者:
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2.3
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DOI:
10.1016/j.jaci.2017.10.046
发表时间:
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期刊:
The Journal of allergy and clinical immunology
影响因子:
--
作者:
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通讯作者:
Leung DYM
影响因子:
3.4
作者:
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通讯作者:
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