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核苷酸信号控制管状细胞损伤后的定向细胞迁移。

Control of Directed Cell Migration after Tubular Cell Injury by Nucleotide Signaling.

机构信息

Renal Division, University Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany.

Signaling Research Centres BIOSS and CIBSS, University of Freiburg, Albertstrasse 19, 79104 Freiburg, Germany.

出版信息

Int J Mol Sci. 2022 Jul 17;23(14):7870. doi: 10.3390/ijms23147870.

Abstract

Acute kidney injury (AKI) is a common complication of severe human diseases, resulting in increased morbidity and mortality as well as unfavorable long-term outcomes. Although the mammalian kidney is endowed with an amazing capacity to recover from AKI, little progress has been made in recent decades to facilitate recovery from AKI. To elucidate the early repair mechanisms after AKI, we employed the zebrafish pronephros injury model. Since damaged cells release large amounts of ATP and ATP-degradation products to signal apoptosis or necrosis to neighboring cells, we examined how depletion of purinergic and adenosine receptors impacts the directed cell migration that ensues immediately after a laser-induced tubular injury. We found that depletion of the zebrafish adenosine receptors , , , and significantly affected the repair process. Similar results were obtained after depletion of the purinergic receptor, which is highly expressed during zebrafish pronephros development. Released ATP is finally metabolized to inosine by adenosine deaminase. Depletion of zebrafish adenosine deaminases and interfered with the repair process; furthermore, combinations of and , or and displayed synergistic effects at low concentrations, supporting the involvement of inosine signaling in the repair process after a tubular injury. Our findings suggest that nucleotide-dependent signaling controls immediate migratory responses after tubular injury.

摘要

急性肾损伤(AKI)是严重人类疾病的常见并发症,导致发病率和死亡率增加以及不良的长期预后。尽管哺乳动物的肾脏具有从 AKI 中恢复的惊人能力,但近几十年来在促进 AKI 恢复方面几乎没有取得进展。为了阐明 AKI 后的早期修复机制,我们采用了斑马鱼原肾损伤模型。由于受损细胞会释放大量的 ATP 和 ATP 降解产物,向邻近细胞发出凋亡或坏死的信号,因此我们研究了嘌呤能和腺苷受体的耗竭如何影响激光诱导的管状损伤后立即发生的定向细胞迁移。我们发现,斑马鱼腺苷受体 、 、 和 的耗竭显着影响了修复过程。在嘌呤能 P2Y 受体耗竭后也获得了类似的结果,该受体在斑马鱼原肾发育过程中高度表达。释放的 ATP 最终被腺苷脱氨酶代谢为肌苷。斑马鱼腺苷脱氨酶 和 的耗竭干扰了修复过程;此外, 和 或 和 的组合在低浓度下显示出协同作用,支持肌苷信号在管状损伤后的修复过程中发挥作用。我们的研究结果表明,核苷酸依赖性信号控制管状损伤后即刻的迁移反应。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/258f/9322613/ea9896a87de7/ijms-23-07870-g001.jpg

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