Journal of Geometry最新文献_第6页

Stimulation of the atypical chemokine receptor 3 (ACKR3) by a small-molecule agonist attenuates fibrosis in a preclinical liver but not lung injury model. 在临床前肝损伤模型中，小分子激动剂刺激非典型趋化因子受体3 (ACKR3)可减轻纤维化，但不能减轻肺损伤模型。

IF 8

Journal of Geometry Pub Date : 2022-05-13 DOI: 10.1007/s00018-022-04317-y

Tom Van Loy, Steven De Jonghe, Karolien Castermans, Wouter Dheedene, Reinout Stoop, Lars Verschuren, Matthias Versele, Patrick Chaltin, Aernout Luttun, Dominique Schols

{"title":"Stimulation of the atypical chemokine receptor 3 (ACKR3) by a small-molecule agonist attenuates fibrosis in a preclinical liver but not lung injury model.","authors":"Tom Van Loy, Steven De Jonghe, Karolien Castermans, Wouter Dheedene, Reinout Stoop, Lars Verschuren, Matthias Versele, Patrick Chaltin, Aernout Luttun, Dominique Schols","doi":"10.1007/s00018-022-04317-y","DOIUrl":"10.1007/s00018-022-04317-y","url":null,"abstract":"Atypical chemokine receptor 3 (ACKR3, formerly CXC chemokine receptor 7) is a G protein-coupled receptor that recruits β-arrestins, but is devoid of functional G protein signaling after receptor stimulation. In preclinical models of liver and lung fibrosis, ACKR3 was previously shown to be upregulated after acute injury in liver sinusoidal and pulmonary capillary endothelial cells, respectively. This upregulation was linked with a pro-regenerative and anti-fibrotic role for ACKR3. A recently described ACKR3-targeting small molecule agonist protected mice from isoproterenol-induced cardiac fibrosis. Here, we aimed to evaluate its protective role in preclinical models of liver and lung fibrosis. After confirming its in vitro pharmacological activity (i.e., ACKR3-mediated β-arrestin recruitment and receptor binding), in vivo administration of this ACKR3 agonist led to increased mouse CXCL12 plasma levels, indicating in vivo interaction of the agonist with ACKR3. Whereas twice daily in vivo administration of the ACKR3 agonist lacked inhibitory effect on bleomycin-induced lung fibrosis, it had a modest, but significant anti-fibrotic effect in the carbon tetrachloride (CCl4)-induced liver fibrosis model. In the latter model, ACKR3 stimulation affected the expression of several fibrosis-related genes and led to reduced collagen content as determined by picro-sirius red staining and hydroxyproline quantification. These data confirm that ACKR3 agonism, at least to some extent, attenuates fibrosis, although this effect is rather modest and heterogeneous across various tissue types. Stimulating ACKR3 alone without intervening in other signaling pathways involved in the multicellular crosstalk leading to fibrosis will, therefore, most likely not be sufficient to deliver a satisfactory clinical outcome.","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":"108 1","pages":"293"},"PeriodicalIF":8.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9106635/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73702227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}