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2015 ; 10
(8
): e0136116
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A Short Peptide That Mimics the Binding Domain of TGF-?1 Presents Potent
Anti-Inflammatory Activity
#MMPMID26312490
Vaz ER
; Fujimura PT
; Araujo GR
; da Silva CA
; Silva RL
; Cunha TM
; Lopes-Ferreira M
; Lima C
; Ferreira MJ
; Cunha-Junior JP
; Taketomi EA
; Goulart LR
; Ueira-Vieira C
PLoS One
2015[]; 10
(8
): e0136116
PMID26312490
show ga
The transforming growth factor beta 1 (TGF-?1) is a pleiotropic cytokine with
multiple roles in development, wound healing, and immune regulation.
TGF-?1-mediated immune dysfunction may lead to pathological conditions, such as
inflammation. Chronic inflammatory process is characterized by a continuous
release of pro-inflammatory cytokines, and the inhibition or the blockage of
these cytokines signaling pathways are considered a target treatment. In this
context, despite the high numbers of TGF-?-targeted pathways, the inducible
regulatory T cells (iTreg) to control inflammation seems to be a promising
approach. Our aim was to develop novel peptides through phage display (PhD)
technology that could mimic TGF-?1 function with higher potency. Specific mimetic
peptides were obtained through a PhD subtraction strategy from whole cell binding
using TGF-?1 recombinant as a competitor during elution step. We have selected a
peptide that seems to play an important role on cellular differentiation and
modulation of TNF-? and IL-10 cytokines. The synthetic pm26TGF-?1 peptide tested
in PBMC significantly down-modulated TNF-? and up-regulated IL-10 responses,
leading to regulatory T cells (Treg) phenotype differentiation. Furthermore, the
synthetic peptide was able to decrease leukocytes rolling in BALB/C mice and
neutrophils migration during inflammatory process in C57BL/6 mice. These data
suggest that this peptide may be useful for the treatment of inflammatory
diseases, especially because it displays potent anti-inflammatory properties and
do not exhibit neutrophils' chemoattraction.