Pearlman Eric, Johnson Angela, Adhikary Gautam, Sun Yan, Chinnery Holly R, Fox Todd, Kester Mark, McMenamin Paul G
Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio 44106, USA.
Ocul Surf. 2008 Jul;6(3):108-16. doi: 10.1016/s1542-0124(12)70279-3.
The Toll-like receptor (TLR) family of pathogen recognition molecules has an important role in recognizing microbial pathogens and microbial breakdown products. Activation of TLRs in the corneal epithelium induces CXC chemokine production and recruitment of neutrophils to the corneal stroma. Although essential for pathogen killing, neutrophils can cause extensive tissue damage, leading to visual impairment and blindness. In this review, we examine the role of TLRs in microbial keratitis and in noninfectious corneal inflammation, most commonly associated with contact lens wear. we present recent findings on TLR signaling pathways in the cornea, including MyD88- and TRIF-dependent responses and discuss the role of resident macrophages and dendritic cells. Finally, we examine the potential for targeting the TLR pathway as a potential therapeutic intervention for microbial keratitis and contact lens-associated corneal inflammation.
病原体识别分子的Toll样受体(TLR)家族在识别微生物病原体和微生物分解产物方面具有重要作用。角膜上皮中TLR的激活会诱导CXC趋化因子的产生,并使中性粒细胞募集至角膜基质。尽管中性粒细胞对于杀灭病原体至关重要,但它们会导致广泛的组织损伤,进而导致视力损害和失明。在本综述中,我们研究了TLR在微生物性角膜炎和最常与隐形眼镜佩戴相关的非感染性角膜炎症中的作用。我们介绍了角膜中TLR信号通路的最新研究结果,包括依赖MyD88和TRIF的反应,并讨论了常驻巨噬细胞和树突状细胞的作用。最后,我们探讨了将TLR通路作为微生物性角膜炎和隐形眼镜相关性角膜炎症潜在治疗干预靶点的可能性。