Recombinant PGRN promotes the induction of inducible regulatory T cells in vitro.

Abstract

<p>Naïve CD4+GFP- cells in lymphocytes of spleen from Foxp3-GFP reporter mice were purified by using Mitenyi reagents and a MACS apparatus. The purity of cells was evaluated by FACS method. CD4+GFP- cells conversion assay was performed as described in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0112110#s2" target="_blank">Methods</a>, and GFP expression in TGF-β-unstimulated CD4+GFP- cells was taken as a control. After 3-4 days, cells were washed and GFP expression was analyzed by FACS. Data represent three independent experiments are shown. (A) No TGF-β and no PGRN. (B) No TGF-β plus 200 ng/ml of PGRN. (C) No TGF-β plus 1 µg/ml of PGRN. (D) 0.1 ng/ml of TGF-β and no PGRN. (E) 0.1 ng/ml of TGF-βplus 200 ng/ml of PGRN. (F) 0.1 ng/ml of TGF-β plus 1 µg/ml of PGRN. Data represent as a means ±SE of a representative experiment. *<i>p</i><0.05; **<i>p</i><0.01.</p

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