Lymphatic system: an active pathway for immune protection.

Lymphatic system: an active pathway for immune protection.
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DOI:
10.1016/j.semcdb.2014.11.012
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发表时间:
2015-02
影响因子:
7.3
通讯作者:
von der Weid PY
von der Weid PY
中科院分区:
生物学2区
文献类型:
--
作者:
Liao S;von der Weid PY

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众所周知,淋巴管通过提供用于将抗原和抗原呈递细胞递送至引流淋巴结的结构和功能支持而参与免疫应答。最近的进展提高了我们对淋巴系统如何工作以及它如何参与免疫反应发展的理解。新的研究结果表明,淋巴系统可能通过多种途径控制最终的免疫应答,包括引导抗原/树突状细胞(DC)进入外周初始淋巴管,通过主动促进淋巴和细胞运动,促进抗原/DC通过传入淋巴管的运输,以及通过免疫调节系统调节免疫应答。通过淋巴管内皮细胞和淋巴结基质细胞的网络并最终通过直接淋巴细胞从淋巴结中排出而使抗原呈递到淋巴结中。相同的机制对于维持外周耐受性可能也很重要。在这篇综述中,我们将讨论如何在淋巴管和淋巴结的淋巴管内皮细胞的形态和基因表达谱提供了一个高效的途径,以启动免疫反应。对淋巴系统如何参与免疫调节的基本认识将指导淋巴系统在各种疾病中功能的研究。
Lymphatic vessels are well known to participate in the immune response by providing the structural and functional support for the delivery of antigens and antigen presenting cells to draining lymph nodes. Recent advances have improved our understanding of how the lymphatic system works and how it participates to the development of immune responses. New findings suggest that the lymphatic system may control the ultimate immune response through a number of ways which include guiding antigen/dendritic cells (DC) entry into initial lymphatics at the periphery; promoting antigen/DC trafficking through afferent lymphatic vessels by actively facilitating lymph and cell movement; enabling antigen presentation in lymph nodes via a network of lymphatic endothelial cells and lymph node stroma cell and finally by direct lymphocytes exit from lymph nodes. The same mechanisms are likely also important to maintain peripheral tolerance. In this review we will discuss how the morphology and gene expression profile of the lymphatic endothelial cells in lymphatic vessels and lymph nodes provides a highly efficient pathway to initiate immune responses. The fundamental understanding of how lymphatic system participates in immune regulation will guide the research on lymphatic function in various diseases.
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