Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4
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Full-length article|更新时间:2022-06-24
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Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4
Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4
Genes & Diseases2022年9卷第2期
作者机构:
1. Kidney Disease Center, the First Affiliated Hospital, College of Medicine, Zhejiang University,Hangzhou,PR China,310003
2. Key Laboratory of Kidney Disease Prevention and Control Technology,Zhejiang Province,Hangzhou,PR China,310063
3. National Key Clinical Department of Kidney Diseases,Hangzhou,PR China,310005
4. Institute of Nephrology, Zhejiang University,Hangzhou,PR China,310020
5. The Third Grade Laboratory under the National State, Administration of Traditional Chinese Medicine,Hangzhou,PR China,310005
6. Central Laboratory, the First Affiliated Hospital of Zhejiang Chinese Medical University,Hangzhou,PR China,310006
Xiujin Shen, Chunhua Weng, Yucheng Wang, 等. Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4[J]. Genes & Diseases, 2022,9(2).
Xiujin Shen, Chunhua Weng, Yucheng Wang, et al. Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4[J]. Genes & Diseases, 2022,9(2).
Xiujin Shen, Chunhua Weng, Yucheng Wang, 等. Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4[J]. Genes & Diseases, 2022,9(2). DOI: 10.1016/j.gendis.2020.07.005.
Xiujin Shen, Chunhua Weng, Yucheng Wang, et al. Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4[J]. Genes & Diseases, 2022,9(2). DOI: 10.1016/j.gendis.2020.07.005.
Lipopolysaccharide-induced podocyte injury is regulated by calcineurin/NFAT and TLR4/MyD88/NF-κB signaling pathways through angiopoietin-like protein 4
摘要
Abstract
Podocyte injury is an important cause of proteinuria. Angiopoietin-like protein 4 (Angptl4) is a secreted glycoprotein and has a role in proteinuria. However
the exact role of Angptl4 in podocyte injury and its upstream regulators has not been clarified. In this study
we used lipopolysaccharide (LPS)-induced mice and cultured podocytes as podocyte injury models. Our results indicated that LPS increased the expression of podocyte Angptl4
in vivo
and
in vitro
. Furthermore
we showed that Angptl4 overexpression deteriorated LPS-induced podocyte injury by inducing podocyte cytoskeleton rearrangement
reducing the expression of synaptopodin while Angptl4 knockdown alleviated LPS-induced podocyte injury. In addition
we found that inhibitors and siRNA targeting TLR4/MyD88/NF-κB signaling inhibited the upregulation of Angptl4 in LPS-induced podocytes. Moreover
inhibitors and siRNA targeting calcineurin/NFAT signaling also relieved LPS-induced Angptl4 expression and podocyte injury
in vivo
and
in vitro
. Taken together
our study has elucidated that both of the TLR4/MyD88/NF-κB and calcineurin/NFAT signaling mediate the upregulation of Angptl4 in LPS-induced podocytes
which has important implications for further understanding the molecular mechanism of LPS-induced podocyte injury.
关键词
Keywords
Angiopoietin-like protein 4Calcineurin/NFATLPSPodocyte injuryTLR4/MyD88/NF-κB