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Abstract Title:

Mangiferin corrects the imbalance of Th17/Treg cells in mice with TNBS-induced colitis.

Abstract Source:

Int Immunopharmacol. 2016 May ;34:220-8. Epub 2016 Mar 9. PMID: 26971225

Abstract Author(s):

Su-Min Lim, Jin-Ju Jeong, Hyun Sik Choi, Hwan Bong Chang, Dong-Hyun Kim

Article Affiliation:

Su-Min Lim

Abstract:

In the previous study, 80% ethanol extract of the rhizome mixture of Anemarrhena asphodeloides and Coptidis chinensis (AC) and its main constituent mangiferin improved TNBS-induced colitis in mice by inhibiting macrophage activation related to the innate immunity. In the preliminary study, we found that AC could inhibit Th17 cell differentiation in mice with TNBS-induced colitis. Therefore, we investigated whether AC and it main constituent mangiferin are capable of inhibiting inflammation by regulating T cell differentiation related to the adaptive immunity in vitro and in vivo. AC and mangiferin potently suppressed colon shortening and myeloperoxidase activity in mice with TNBS-induced colitis. They also suppressed TNBS-induced Th17 cell differentiation and IL-17 expression, but increased TNBS-suppressed Treg cell differentiation and IL-10 expression. Moreover, AC and mangiferin strongly inhibited the expression of TNF-α and IL-17, as well as the activation of NF-κB. Furthermore, mangiferin potently inhibited the differentiation of splenocytes into Th7 cells and increased the differentiation into Treg cells in vitro. Mangiferin also inhibited RORγt and IL-17 expression and STAT3 activation in splenocytes and induced Foxp3 and IL-10 expression and STAT5 activation. Based on these findings, mangiferin may ameliorate colitis by the restoration of disturbed Th17/Treg cells and inhibition of macrophage activation.

Study Type : Animal Study, In Vitro Study

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Sayer Ji
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