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In-Depth Proteomic Analysis of Human Bronchoalveolar Lavage Fluid toward the Biomarker Discovery for Lung Cancers

In-Depth Proteomic Analysis of Human Bronchoalveolar Lavage Fluid toward the Biomarker Discovery for Lung Cancers
Sim, Seo YoungChoi, Yu RiLee, Jun HyungLim, Jae MinLee, Seung-EunKim, Kwang PyoKim, Jin YoungLee, Seung HyeunKim, Min-Sik
DGIST Authors
Kim, Min-Sik
Issued Date
Article Type
Author Keywords
biomarkersbronchoalveolar lavage fluiddepletionhigh-pH fractionationlung cancer
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. Experimental Design: 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. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Wiley-VCH Verlag
Related Researcher
  • 김민식 Kim, Min-Sik 뉴바이올로지학과
  • Research Interests Cancer Proteogenomics; Biomarker Discovery; Integrative Multi-Omics
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Department of New Biology Laboratory for QBIO and Precision Medicine 1. Journal Articles


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