Schön Michael P, Broekaert Sigrid M C, Erpenbeck Luise
Department of Dermatology, Venereology and Allergolosgy, University Medical Center Göttingen, Göttingen, Germany.
Exp Dermatol. 2017 Apr;26(4):305-311. doi: 10.1111/exd.13067. Epub 2017 Feb 27.
Notwithstanding their prominent presence in psoriatic skin, the functional role of neutrophilic granulocytes still remains somewhat enigmatic. Sparked by exciting scientific discoveries regarding neutrophil functions within the last years, the interest in these short-lived cells of the innate immune system has been boosted recently. While it had been known for some time that neutrophils produce and respond to a number of inflammatory mediators, recent research has linked neutrophils with the pathogenic functions of IL-17, possibly in conjunction with the formation of NETs (neutrophil extracellular traps). Antipsoriatic therapies exert their effects, at least in part, through interference with neutrophils. Neutrophils also appear to connect psoriasis with comorbid diseases. However, directly tampering with neutrophil functions is not trivial as evinced by the failure of therapeutic approaches targeting redundantly regulated cellular communication networks. It has also become apparent that neutrophils link important pathogenic functions of the innate and the adaptive immune system and that they are intricately involved in regulatory networks underlying the pathophysiology of psoriasis. In order to advocate intensified research into the role of this interesting cell population, we here highlight some features of neutrophils and put them into perspective with our current view of the pathophysiology of psoriasis.
尽管嗜中性粒细胞在银屑病皮肤中显著存在,但其功能作用仍有些神秘。近年来,关于中性粒细胞功能的令人兴奋的科学发现激发了人们的兴趣,对这些先天免疫系统的短命细胞的关注最近有所增加。虽然人们早就知道中性粒细胞会产生并对多种炎症介质做出反应,但最近的研究将中性粒细胞与IL-17的致病功能联系起来,可能与中性粒细胞胞外陷阱(NETs)的形成有关。抗银屑病疗法至少部分地通过干扰中性粒细胞发挥作用。中性粒细胞似乎还将银屑病与合并症联系起来。然而,正如针对冗余调节的细胞通讯网络的治疗方法失败所表明的那样,直接干预中性粒细胞功能并非易事。同样明显的是,中性粒细胞连接了先天免疫系统和适应性免疫系统的重要致病功能,并且它们复杂地参与了银屑病病理生理学的调节网络。为了倡导加强对这一有趣细胞群体作用的研究,我们在此强调中性粒细胞的一些特征,并将它们与我们目前对银屑病病理生理学的看法联系起来。