Back to Journals » Journal of Inflammation Research » Volume 12

Epigallocatechin-3-gallate suppresses neutrophil migration speed in a transgenic zebrafish model accompanied by reduced inflammatory mediators

Authors Nguyen T, Payan B, Zambrano A, Du Y, Bondesson M, Mohan C

Received 17 May 2019

Accepted for publication 17 May 2019

Published 29 August 2019 Volume 2019:12 Pages 231—239


Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Ning Quan

Thao Nguyen,1 Brittany Payan,1 Amarayca Zambrano,1 Yong Du,1 Maria Bondesson,2 Chandra Mohan1

1Biomedical Engineering Department, University of Houston, Houston, TX 77204, USA; 2Department of Intelligent Systems Engineering, Indiana University, Bloomington, IN 47405, USA

Correspondence: Chandra Mohan
Department of Biomedical Engineering, University of Houston, 3517 Cullen Blvd, Room 2004, Houston, TX 77204, USA
Tel +1 713 743 3709

Background: Polyphenol catechins from green tea, particularly (−)-epigallocatechin-3-gallate (EGCG), exhibits numerous beneficial health effects, although the mechanisms remain unclear.
Methods: In this study, the mechanism of EGCG-mediated healing in an experimentally injured zebrafish model was examined at the cellular and molecular level using confocal microscopy and gene expression analysis.
Results: The mechanisms of action of EGCG were shown to involve: (1) reducing neutrophil response (accumulation, travel speed, and distance) and (2) downregulating the expression of IL-1β, TNFα, and related signaling pathways. As determined by dynamic time-lapse tracking studies, the local accumulation of neutrophils with high migration speeds after wounding (n=33 cells, v=0.020 μm/s, d=37.8 μm), underwent significant reduction following treatment with EGCG doses of 300 μM (n=22 cells, v=0.013 μm/s, d=39.5 μm) and 600 μM (n=18 cells, v=0.008 μm/s, d=9.53 μm). Reverse transcription polymerase chain reaction studies revealed that several signature genes in the IL-1β, TNFα, and related signaling pathways were downregulated after EGCG treatment.
Conclusion: The convenience, transparency, and simplicity of the zebrafish model facilitate tracking of fluorescent neutrophils in real time, in order to monitor inflammation, and assess the impact of therapeutic agents.

Keywords: green tea, innate immunity, animal models, IL-1, TNF

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]