上皮细胞感染在纤维化中的作用。
The role of infected epithelial cells in -associated fibrosis.
机构信息
Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States.
School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States.
出版信息
Front Cell Infect Microbiol. 2023 May 17;13:1208302. doi: 10.3389/fcimb.2023.1208302. eCollection 2023.
Ocular, genital, and anogenital infection by the obligate intracellular pathogen have been consistently associated with scar-forming sequelae. In cases of chronic or repeated infection of the female genital tract, infection-associated fibrosis of the fallopian tubes can result in ectopic pregnancy or infertility. In light of this urgent concern to public health, the underlying mechanism of -associated scarring is a topic of ongoing study. Fibrosis is understood to be an outcome of persistent injury and/or dysregulated wound healing, in which an aberrantly activated myofibroblast population mediates hypertrophic remodeling of the basement membrane deposition of collagens and other components of the extracellular matrix, as well as induction of epithelial cell proliferation growth factor signaling. Initial study of infection-associated immune cell recruitment and pro-inflammatory signaling have suggested the cellular paradigm of chlamydial pathogenesis, wherein inflammation-associated tissue damage and fibrosis are the indirect result of an immune response to the pathogen initiated by host epithelial cells. However, recent work has revealed more direct routes by which may induce scarring, such as infection-associated induction of growth factor signaling and pro-fibrotic remodeling of the extracellular matrix. Additionally, infection has been shown to induce an epithelial-to-mesenchymal transition in host epithelial cells, prompting transdifferentiation into a myofibroblast-like phenotype. In this review, we summarize the field's current understanding of -associated fibrosis, reviewing key new findings and identifying opportunities for further research.
由专性细胞内病原体引起的眼部、生殖器和肛门生殖器感染一直与形成瘢痕的后遗症有关。在女性生殖道慢性或反复感染的情况下,输卵管感染相关的纤维化可能导致异位妊娠或不孕。鉴于这对公共卫生的紧迫关注,与 - 相关的瘢痕形成的潜在机制是正在进行研究的主题。纤维化被理解为持续损伤和/或失调的伤口愈合的结果,其中异常激活的肌成纤维细胞群体介导基底膜的肥大重塑 胶原蛋白和细胞外基质的其他成分的沉积,以及诱导上皮细胞增殖 生长因子信号。最初对感染相关免疫细胞募集和促炎信号的研究表明了衣原体发病机制的细胞范例,其中炎症相关的组织损伤和纤维化是宿主上皮细胞引发的对病原体的免疫反应的间接结果。然而,最近的工作揭示了更直接的途径,即 可能诱导瘢痕形成,例如感染相关的生长因子信号诱导和细胞外基质的促纤维化重塑。此外,已经表明 感染可诱导宿主上皮细胞发生上皮细胞向间充质转化,促使向肌成纤维细胞样表型转化。在这篇综述中,我们总结了该领域目前对 - 相关纤维化的理解,回顾了关键的新发现,并确定了进一步研究的机会。