Highly effective detection of inflamed cells using a modified bradykinin ligand labeled with FITC fluorescence.

Abstract

Detection of inflammation in live cells is important because long-lasting inflammation is considered to be a primary cause of several diseases. However, few reports have been published on imaging analysis of inflammation in live cells. In this study, we developed an effective imaging system for detection of inflamed cells using a bradykinin ligand (BK) or a modified BK (mBK), which has specific affinity with the cellular B1R receptor. Synthetic BK or mBK labeled with FITC at the N-terminus was employed for discriminating between inflamed and normal cells; this method was found to be effective for detection of inflammation in live cells. In addition, using the mBK-based cell imaging system, we successfully performed flow-based analysis of live cell inflammation on a micro-chip channel, composed of a Starna flow cell and PDMS (Polydimethylsiloxane) walls. The BK-based cell imaging methods designed here would be a useful platform for development of a high-throughput live cell analysis system for investigating the factors underlying inflammation or for screening of anti-inflammation candidate drugs.

• Authors: Ki Baek Yeo, Hyong Bai Kim, Yoo Seong Choi, Seung Pil Pack
• Journal: Enzyme and microbial technology (Enzyme Microb Technol) Vol. 82 Pg. 191-196 (Jan 2016) ISSN: 1879-0909 [Electronic] United States
• PMID: 26672467 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2015 Elsevier Inc. All rights reserved.

Chemical References

• Fluorescent Dyes
• Ligands
• Peptide Fragments
• Receptor, Bradykinin B1
• Fluorescein-5-isothiocyanate
• Bradykinin

Topics

• Adenocarcinoma (pathology)
• Bradykinin (metabolism)
• Cell Line, Tumor
• Flow Cytometry
• Fluorescein-5-isothiocyanate (analysis)
• Fluorescent Dyes (analysis)
• Humans
• Image Processing, Computer-Assisted
• In Vitro Techniques
• Inflammation (diagnosis, pathology)
• Lab-On-A-Chip Devices
• Ligands
• Lung Neoplasms (pathology)
• Microscopy, Fluorescence
• Microscopy, Interference
• Peptide Fragments (metabolism)
• Receptor, Bradykinin B1 (metabolism)