Document Type

Journal Article

Department/Unit

School of Chinese Medicine

Language

English

Abstract

Purpose: This study aimed to explore underlying action mechanism of Wu-Tou decoction (WTD) in rheumatoid arthritis (RA) through network pharmacology prediction and experimental verification.

Methods: Chemical compounds and human target proteins of WTD as well as RA-related human genes were obtained from TCM Database @ Taiwan, PubChem and GenBank, respectively. Subsequently, molecular networks and canonical pathways presumably involved in the treatment of WTD on RA were generated by ingenuity pathway analysis (IPA) software. Furthermore, experimental validation was carried out with MIP-1β-induced U937 cell model and collagen induced arthritis (CIA) rat model.

Results: CCR5 signaling pathway in macrophages was shown to be the top one shared signaling pathway associated with both cell immune response and cytokine signaling. In addition, protein kinase C (PKC) δ and p38 in this pathway were treated as target proteins of WTD in RA. In vitro experiments indicated that WTD inhibited MIP-1β-induced production of TNF-α, MIP-1α, and RANTES as well as phosphorylation of CCR5, PKC δ, and p38 in U937 cells. WTD treatment maintained the inhibitory effects on production of TNF-α and RANTES in MIP-1β-induced U937 cells after CCR5 knockdown. In vivo experiments demonstrated that WTD ameliorated symptoms in CIA rats, decreased the levels of IL-1β, IL-2, IL-6, TNF-α, MIP-1α, MIP-2, RANTES, and IP-10 in serum of CIA rats, as well as mRNA levels of MIP-1α, MIP-2, RANTES, and IP-10 in ankle joints of CIA rats. Furthermore, WTD also lowered the phosphorylation levels of CCR5, PKC δ and p38 in both ankle joints and macrophages in ankle joints from CIA rats.

Conclusion: It was demonstrated in this research that WTD played a role in inhibiting inflammatory response in RA which was closely connected with the modulation effect of WTD on CCR5 signaling pathway in macrophages.

Keywords

Wu-Tou decoction, rheumatoid arthritis, mechanism of action, network pharmacology, CCR5 signaling pathway in macrophages

Publication Date

5-3-2017

Source Publication Title

Frontiers in Pharmacology

Volume

8

Start Page

Article 230

Publisher

Frontiers Media

Peer Reviewed

1

Copyright

© 2017 Guo, Zheng, Fan, Zhao, Li, Bian, Qiu, Liu, Zhang, Ma, He and Lu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

Funder

This study was supported by Hong Kong Baptist University Strategic Development Fund (SDF13-1209-P01).

DOI

10.3389/fphar.2017.00230

Link to Publisher's Edition

http://dx.doi.org/10.3389/fphar.2017.00230

ISSN (electronic)

16639812

JA-5308-29251_suppl.pdf (1507 kB)
Supplementary Material

Additional Files

JA-5308-29251_suppl.pdf (1507 kB)
Supplementary Material

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