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Publication : Tubular IKKβ Deletion Alleviates Acute Ischemic Kidney Injury and Facilitates Tissue Regeneration.

First Author  Dahlke E Year  2022
Journal  Int J Mol Sci Volume  23
Issue  17 PubMed ID  36077596
Mgi Jnum  J:336400 Mgi Id  MGI:7340367
Doi  10.3390/ijms231710199 Citation  Dahlke E, et al. (2022) Tubular IKKbeta Deletion Alleviates Acute Ischemic Kidney Injury and Facilitates Tissue Regeneration. Int J Mol Sci 23(17)
abstractText  Acute kidney injury (AKI) is a common renal injury leading to relevant morbidity and mortality worldwide. Most of the clinical cases of AKI are caused by ischemia reperfusion (I/R) injury with renal ischemia injury followed by reperfusion injury and activation of the innate immune response converging to NF-kB pathway induction. Despite the clear role of NF-kB in inflammation, it has recently been acknowledged that NF-kB may impact other cell functions. To identify NF-kB function with respect to metabolism, vascular function and oxidative stress after I/R injury and to decipher in detail the underlying mechanism, we generated a transgenic mouse model with targeted deletion of IKKbeta along the tubule and applied I/R injury followed by its analysis after 2 and 14 days after I/R injury. Tubular IKKbeta deletion ameliorated renal function and reduced tissue damage. RNAseq data together with immunohistochemical, biochemical and morphometric analysis demonstrated an ameliorated vascular organization and mRNA expression profile for increased angiogenesis in mice with tubular IKKbeta deletion at 2 days after I/R injury. RNAseq and protein analysis indicate an ameliorated metabolism, oxidative species handling and timely-adapted cell proliferation and apoptosis as well as reduced fibrosis in mice with tubular IKKbeta deletion at 14 days after I/R injury. In conclusion, mice with tubular IKKbeta deletion upon I/R injury display improved renal function and reduced tissue damage and fibrosis in association with improved vascularization, metabolism, reactive species disposal and fine-tuned cell proliferation.
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