ET-3/ETBR Mediates Na+-Activated Immune Signaling and Kidney Lymphatic Dynamics.

IF 16.5 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS
Ashley L Mutchler, Jianyong Zhong, Hai-Chun Yang, Shilin Zhao, Rachelle Crescenzi, Shannon Taylor, Roy L Rao, Elaine L Shelton, Annet Kirabo, Valentina Kon
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引用次数: 0

Abstract

Background: Lymphatic collecting vessels in the kidney are critical in clearing interstitial fluid, macromolecules, and infiltrating immune cells. Dysfunction of the lymphatic vessels can disrupt this process and exacerbate injury-associated inflammation in many disease conditions. We previously found that sodium accumulates within the kidney interstitium during proteinuric kidney injury and elevated sodium environments stimulate isolevuglandin production in antigen-presenting cells, stimulating T cells, and modulating inflammatory responses. In the present study, we investigated whether proteinuric injury increases production of isolevuglandin-adduct formation in antigen-presenting cells, their effects on lymphatic endothelial cells (LECs), and the role of the ET-3 (endothelin-3)/ETBR (endothelin type B receptor) on lymphatic vessel function.

Methods: We used a mouse model of nephrotoxin-induced proteinuric injury to show that proteinuric injury expanded the kidney lymphatic network and to immunophenotype the infiltrating immune cells. To determine mechanisms, we analyzed the interaction of migratory immune cells and LECs using an in vitro transwell migration assay, bulk RNA sequencing, and flow cytometric analysis. To determine the effect of ET-3/ETBR axis on lymphatic vessel contractility, we analyzed microdissected lymphangions utilizing a vessel perfusion chamber.

Results: We found that animals with proteinuric injury have increased kidney lymphangiogenesis, isolevuglandin-producing dendritic cells, and IFN (interferon)-γ-producing CD4+T cells. The sodium avid environment present in kidney injury enhances the interaction between LECs and migratory antigen-presenting cells and LEC production of isolevuglandin-adducts. Elevated sodium environment-induced isolevuglandin-adduct formation facilitates the ET-3/ETBR communication between LECs and dendritic cells. In addition, the ET-3/ETBR axis modulates lymphatic collecting vessel pumping dynamics.

Conclusions: These findings reveal a novel mechanism linking the isolevuglandin-mediated ET-3/ETBR axis with LECs and infiltrating dendritic cells. ET-3/ETBR signaling in lymphatic vessel dynamics is a novel pathogenic component and a possible therapeutic target in kidney disease.

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来源期刊
Circulation research
Circulation research 医学-外周血管病
CiteScore
29.60
自引率
2.00%
发文量
535
审稿时长
3-6 weeks
期刊介绍: Circulation Research is a peer-reviewed journal that serves as a forum for the highest quality research in basic cardiovascular biology. The journal publishes studies that utilize state-of-the-art approaches to investigate mechanisms of human disease, as well as translational and clinical research that provide fundamental insights into the basis of disease and the mechanism of therapies. Circulation Research has a broad audience that includes clinical and academic cardiologists, basic cardiovascular scientists, physiologists, cellular and molecular biologists, and cardiovascular pharmacologists. The journal aims to advance the understanding of cardiovascular biology and disease by disseminating cutting-edge research to these diverse communities. In terms of indexing, Circulation Research is included in several prominent scientific databases, including BIOSIS, CAB Abstracts, Chemical Abstracts, Current Contents, EMBASE, and MEDLINE. This ensures that the journal's articles are easily discoverable and accessible to researchers in the field. Overall, Circulation Research is a reputable publication that attracts high-quality research and provides a platform for the dissemination of important findings in basic cardiovascular biology and its translational and clinical applications.
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