The tripeptide KdPT ameliorates ongoing psoriasis‐like skin inflammation in murine and human skin

The tripeptide KdPT ameliorates ongoing psoriasis‐like skin inflammation in murine and human skin
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三肽 KdPT 可改善小鼠和人类皮肤中持续存在的类似牛皮癣的皮肤炎症

DOI:
10.1111/exd.13145
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发表时间:
2017
影响因子:
3.6
通讯作者:
Loser K
Loser K
中科院分区:
医学2区
文献类型:
--
作者:
Mykicki N;Klenner L;Baumann C;Auriemma M;Sternemann C;Soeberdt M;Elliott GR;Abels C;Luger TA;Loser K

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银屑病是一种慢性炎症性疾病,表现为鳞状上皮性皮肤病变,其特征是角化不全和棘层增生以及免疫细胞(如T辅助细胞-1和T辅助细胞-17)的浸润。在这里,我们证明了KdPT,一种结构上与α-黑素细胞刺激激素的C-末端氨基酸相关的三肽,先前显示在肠道炎症中表现出抗炎作用,改善了咪喹莫特诱导的银屑病样皮肤炎症小鼠模型和银屑病的小型异种移植小鼠模型中的持续疾病。我们可以表明,全身性KdPT治疗显着减少角化过度和棘皮症在小鼠以及人类皮肤。此外,KdPT上调了来自小鼠和银屑病患者外周血的CD 4 +T细胞中的Foxp 3,并降低了1型炎性细胞因子的表达,表明KdPT的有益作用至少部分是通过诱导功能性调节性T细胞介导的,这些调节性T细胞抑制了致病性CD 4 +IFN-γ+和CD 4 +IL-17+T细胞的活化。因此,这些数据可能表明KdPT作为一种潜在的新的治疗替代治疗银屑病。
Psoriasis is a chronic inflammatory disease appearing as scaly erythematous cutaneous lesions, which are characterized by parakeratosis and acanthosis as well as the infiltration of immune cells, such as T helper‐1 and T helper‐17 cells. Here, we demonstrated that KdPT, a tripeptide structurally related to the C‐terminal amino acids of alpha‐melanocyte‐stimulating hormone, which was previously shown to exhibit anti‐inflammatory effects in intestinal inflammation, ameliorated ongoing disease in the mouse model of imiquimod‐induced psoriasis‐like skin inflammation and in the small xenotransplant mouse model of psoriasis. We could show that systemic KdPT treatment significantly reduced hyperkeratosis and acanthosis in murine as well as human skin. Moreover, KdPT upregulated Foxp3 in CD4+T cells from mice and from peripheral blood of individuals with psoriasis and decreased the expression of type 1 inflammatory cytokines, indicating that the beneficial effect of KdPT was, at least in part, mediated by the induction of functional regulatory T cells that suppressed the activation of pathogenic CD4+IFN‐γ+and CD4+IL‐17+T cells. Thus, these data might suggest KdPT as a potential novel therapeutic alternative for the treatment of psoriasis.
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