ArticlebioRxiv : the preprint server for biology2024
Lymphatic activation of ACKR3 signaling regulates lymphatic response after ischemic heart injury.
Article in bioRxiv : the preprint server for biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Ischemic heart disease is a prevalent cause of death and disability worldwide. Recent studies reported a rapid expansion of the cardiac lymphatic network upon ischemic heart injury and proposed that cardiac lymphatics may attenuate tissue edema and inflammatory mechanisms after ischemic heart injury. Nevertheless, the mechanisms through which hypoxic conditions affect cardiac lymphangiogenesis and function remain unclear. Here, we aimed to characterize the role of the adrenomedullin decoy receptor atypical chemokine receptor 3 (ACKR3) in the lymphatic response following ischemic heart injury. Methods: Spatial assessment of ACKR3 signaling in the heart after ischemic heart injury was conducted using ACKR3-TangoGFP reporter mice. Roles of ACKR3 after ischemic heart injury were characterized in Results: Using the novel ACKR3-Tango-GFP reporter mice, we detected activation of ACKR3 signaling in cardiac lymphatics adjacent to the site of ischemic injury of left anterior descending artery (LAD) ligation. Conclusions: Lymphatic expression of ACKR3 governs numerous processes following ischemic heart injury, including the lymphangiogenic response, edema protection and overall survival. These results expand our understanding of how the heart failure biomarker adrenomedullin, regulated by lymphatic ACKR3, may exert its cardioprotective roles after ischemic cardiac injury.
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