In-Depth Proteomic Analysis of Human Bronchoalveolar Lavage Fluid toward the Biomarker Discovery for Lung Cancers.
Proteomics Clin Appl
; 13(5): e1900028, 2019 09.
Article
en En
| MEDLINE
| ID: mdl-31119868
ABSTRACT
PURPOSE:
Lung cancer is among the most common cancers. Bronchoalveolar lavage fluid (BALF) can be easily obtained from patients with lung cancers. The aim is to develop a novel proteomic method of the molecule-based sensitive detection of biomarkers from BALF. EXPERIMENTALDESIGN:
BALF samples are collected from segmental bronchus of 14 patients with lung cancers from Kyung Hee University Hospital. First, BALF proteome is depleted using a depletion column, and then peptides are prepared from the enriched low abundant proteins and fractionated by high pH reverse phase liquid chromatography prior to LC-MS/MS. Data are available via ProteomeXchange with identifier PXD012645.RESULTS:
A novel method is developed for in-depth proteomic analysis of BALF by combining antibody-based depletion of high abundant proteins from BALF with high pH peptide fractionation. Peptides are analyzed on a high resolution Orbitrap Fusion mass spectrometer. MaxQuant search result in the identification of 4615 protein groups mapped to 4534 genes. CONCLUSIONS AND CLINICAL RELEVANCE It is found that the method outperformed conventional BALF proteomic methods and it is believed that this method will facilitate the biomarker research for lung cancer. In addition, it is shown that BALF will be a great source of biomarkers of lung diseases.Palabras clave
Texto completo:
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Base de datos:
MEDLINE
Asunto principal:
Líquido del Lavado Bronquioalveolar
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Biomarcadores de Tumor
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Proteómica
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Neoplasias Pulmonares
Límite:
Humans
Idioma:
En
Revista:
Proteomics Clin Appl
Asunto de la revista:
BIOQUIMICA
Año:
2019
Tipo del documento:
Article