Lombardo Nicola, Preianò Mariaimmacolata, Maggisano Giuseppina, Murfuni Maria Stella, Messina Luigi, Pelaia Girolamo, Savino Rocco, Terracciano Rosa
Department of Medical and Surgical Sciences, University "Magna Graecia", Catanzaro, Italy.
Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Graecia", Catanzaro, Italy.
Proteomics. 2017 Mar;17(6). doi: 10.1002/pmic.201600215. Epub 2017 Feb 8.
Discriminating different rhinitis cases can sometimes be difficult as the diagnostic criteria used to identify the various subgroups are not always unambiguous. The nasal fluid (NF) highly reflects the pathophysiology of these inflammatory diseases. However, its collection, as nasal lavage fluid, may cause discomfort. Due to the non-invasiveness and rapidity of collection, nasal swab might represent an alternative to overcome these problems and also an ideal source of biomarkers. In this study, we demonstrate that the combined use of mesoporous silica (MPS) with MALDI-TOF MS allows the rapid detection of differential nasal peptide profiles from nasal swabs of healthy (H), allergic rhinitis (AR) and non-allergic rhinitis (NAR) subjects. NF peptides from nasal swabs were captured by the mean of MPS then profiled by MALDI-TOF MS. As a proof-of-principle, we also explored the ability of our platform to discriminate between nasal swabs of patients with AR and NAR, and between these groups and H controls. Four peaks resulted differentially expressed between NAR and AR, two peaks discriminated AR from H while one peak segregated NAR from H group. Therefore, peptides selected and enriched by our platform could form a part of a diagnostic ''rhinomic'' profile of the allergic and non-allergic patients.
鉴别不同类型的鼻炎有时会很困难,因为用于识别各个亚组的诊断标准并不总是明确的。鼻分泌物(NF)高度反映了这些炎症性疾病的病理生理学。然而,作为鼻腔灌洗液收集鼻分泌物可能会引起不适。由于鼻拭子采集具有非侵入性且快速,它可能是克服这些问题的一种替代方法,也是生物标志物的理想来源。在本研究中,我们证明介孔二氧化硅(MPS)与基质辅助激光解吸电离飞行时间质谱(MALDI-TOF MS)联合使用能够从健康(H)、变应性鼻炎(AR)和非变应性鼻炎(NAR)受试者的鼻拭子中快速检测出不同的鼻肽谱。鼻拭子中的NF肽通过MPS捕获,然后用MALDI-TOF MS进行分析。作为原理验证,我们还探索了我们的平台区分AR患者和NAR患者鼻拭子以及区分这些组与H组对照的能力。NAR和AR之间有四个峰差异表达,两个峰区分AR与H,而一个峰区分NAR与H组。因此,我们的平台选择和富集的肽可以构成变应性和非变应性患者诊断“鼻蛋白组”图谱的一部分。
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