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Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip

Inflammation is the initiation of defense of our body against harmful stimuli. Lipopolysaccharide (LPS), originating from outer membrane of Gram-negative bacteria, causes inflammation in the animal’s body and can develop several diseases. In order to study the inflammatory response to LPS of blood v...

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Autores principales: Nam, Ungsig, Kim, Seunggyu, Park, Joonha, Jeon, Jessie S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7465530/
https://www.ncbi.nlm.nih.gov/pubmed/32751936
http://dx.doi.org/10.3390/mi11080747
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author Nam, Ungsig
Kim, Seunggyu
Park, Joonha
Jeon, Jessie S.
author_facet Nam, Ungsig
Kim, Seunggyu
Park, Joonha
Jeon, Jessie S.
author_sort Nam, Ungsig
collection PubMed
description Inflammation is the initiation of defense of our body against harmful stimuli. Lipopolysaccharide (LPS), originating from outer membrane of Gram-negative bacteria, causes inflammation in the animal’s body and can develop several diseases. In order to study the inflammatory response to LPS of blood vessels in vitro, 2D models have been mainly used previously. In this study, a microfluidic device was used to investigate independent inflammatory response of endothelial cells by LPS and interaction of inflamed blood vessel with monocytic THP-1 cells. Firstly, the diffusion of LPS across the collagen gel into blood vessel was simulated using COMSOL. Then, inflammatory response to LPS in engineered blood vessel was confirmed by the expression of Intercellular Adhesion Molecule 1 (ICAM-1) and VE-cadherin of blood vessel, and THP-1 cell adhesion and migration assay. Upregulation of ICAM-1 and downregulation of VE-cadherin in an LPS-treated condition was observed compared to normal condition. In the THP-1 cell adhesion and migration assay, the number of adhered and trans-endothelial migrated THP-1 cells were not different between conditions. However, migration distance of THP-1 was longer in the LPS treatment condition. In conclusion, we recapitulated the inflammatory response of blood vessels and the interaction of THP-1 cells with blood vessels due to the diffusion of LPS.
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spelling pubmed-74655302020-09-04 Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip Nam, Ungsig Kim, Seunggyu Park, Joonha Jeon, Jessie S. Micromachines (Basel) Article Inflammation is the initiation of defense of our body against harmful stimuli. Lipopolysaccharide (LPS), originating from outer membrane of Gram-negative bacteria, causes inflammation in the animal’s body and can develop several diseases. In order to study the inflammatory response to LPS of blood vessels in vitro, 2D models have been mainly used previously. In this study, a microfluidic device was used to investigate independent inflammatory response of endothelial cells by LPS and interaction of inflamed blood vessel with monocytic THP-1 cells. Firstly, the diffusion of LPS across the collagen gel into blood vessel was simulated using COMSOL. Then, inflammatory response to LPS in engineered blood vessel was confirmed by the expression of Intercellular Adhesion Molecule 1 (ICAM-1) and VE-cadherin of blood vessel, and THP-1 cell adhesion and migration assay. Upregulation of ICAM-1 and downregulation of VE-cadherin in an LPS-treated condition was observed compared to normal condition. In the THP-1 cell adhesion and migration assay, the number of adhered and trans-endothelial migrated THP-1 cells were not different between conditions. However, migration distance of THP-1 was longer in the LPS treatment condition. In conclusion, we recapitulated the inflammatory response of blood vessels and the interaction of THP-1 cells with blood vessels due to the diffusion of LPS. MDPI 2020-07-31 /pmc/articles/PMC7465530/ /pubmed/32751936 http://dx.doi.org/10.3390/mi11080747 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nam, Ungsig
Kim, Seunggyu
Park, Joonha
Jeon, Jessie S.
Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip
title Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip
title_full Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip
title_fullStr Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip
title_full_unstemmed Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip
title_short Lipopolysaccharide-Induced Vascular Inflammation Model on Microfluidic Chip
title_sort lipopolysaccharide-induced vascular inflammation model on microfluidic chip
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7465530/
https://www.ncbi.nlm.nih.gov/pubmed/32751936
http://dx.doi.org/10.3390/mi11080747
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