PMID- 33289516 OWN - NLM STAT- MEDLINE DCOM- 20210816 LR - 20240226 IS - 1470-8736 (Electronic) IS - 0143-5221 (Linking) VI - 135 IP - 1 DP - 2021 Jan 15 TI - Bortezomib limits renal allograft interstitial fibrosis by inhibiting NF-kappaB/TNF-alpha/Akt/mTOR/P70S6K/Smurf2 pathway via IkappaBalpha protein stabilization. PG - 53-69 LID - 10.1042/CS20201038 [doi] AB - Chronic allograft dysfunction is a major cause of late graft failure after kidney transplantation. One of the histological changes is interstitial fibrosis, which is associated with epithelial-mesenchymal transition. Bortezomib has been reported to prevent the progression of fibrosis in organs. We used rat renal transplantation model and human kidney 2 cell line treated with tumor necrosis factor-alpha (TNF-alpha) to examine their response to bortezomib. To explore the mechanism behind it, we assessed the previously studied TNF-alpha/protein kinase B (Akt)/Smad ubiquitin regulatory factor 2 (Smurf2) signaling and performed RNA sequencing. Our results suggested that bortezomib could attenuate the TNF-alpha-induced epithelial-mesenchymal transition and renal allograft interstitial fibrosis in vitro and in vivo. In addition to blocking Akt/mammalian target of rapamycin (mTOR)/p70S6 kinase/Smurf2 signaling, bortezomib's effect on the epithelial-mesenchymal transition was associated with inhibition of nuclear factor kappa B (NF-kappaB) pathway by stabilizing inhibitor of NF-kappaB. The study highlighted the therapeutic potential of bortezomib on renal allograft interstitial fibrosis. Such an effect may result from inhibition of NF-kappaB/TNF-alpha/Akt/mTOR/p70S6 kinase/Smurf2 signaling via stabilizing protein of inhibitor of NF-kappaB. CI - (c) 2021 The Author(s). Published by Portland Press Limited on behalf of the Biochemical Society. FAU - Suo, Chuanjian AU - Suo C AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Gui, Zeping AU - Gui Z AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Wang, Zijie AU - Wang Z AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Zhou, Jiajun AU - Zhou J AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Zheng, Ming AU - Zheng M AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Chen, Hao AU - Chen H AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Fei, Shuang AU - Fei S AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Gu, Min AU - Gu M AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. FAU - Tan, Ruoyun AU - Tan R AD - Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Clin Sci (Lond) JT - Clinical science (London, England : 1979) JID - 7905731 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (NF-kappa B) RN - 0 (NFKBIA protein, human) RN - 0 (Nfkbia protein, rat) RN - 0 (Proteasome Inhibitors) RN - 0 (TNF protein, human) RN - 0 (Tumor Necrosis Factor-alpha) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - 69G8BD63PP (Bortezomib) RN - EC 2.3.2.26 (SMURF2 protein, human) RN - EC 2.3.2.26 (Smurf2 protein, rat) RN - EC 2.3.2.27 (Ubiquitin-Protein Ligases) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.1.1 (mTOR protein, rat) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Adaptor Proteins, Signal Transducing/*metabolism MH - Animals MH - Bortezomib/*pharmacology MH - Cell Line MH - Epithelial-Mesenchymal Transition/drug effects MH - Fibrosis MH - Graft Rejection/enzymology/etiology/pathology/*prevention & control MH - Graft Survival/drug effects MH - Humans MH - Kidney Diseases/enzymology/etiology/pathology/*prevention & control MH - Kidney Transplantation/*adverse effects MH - Kidney Tubules, Proximal/*drug effects/enzymology/pathology MH - Male MH - NF-KappaB Inhibitor alpha/metabolism MH - NF-kappa B/metabolism MH - Proteasome Inhibitors/*pharmacology MH - Protein Stability MH - Proto-Oncogene Proteins c-akt/metabolism MH - Rats, Inbred F344 MH - Rats, Inbred Lew MH - Ribosomal Protein S6 Kinases, 70-kDa/metabolism MH - Signal Transduction/*drug effects MH - TOR Serine-Threonine Kinases/metabolism MH - Time Factors MH - Tumor Necrosis Factor-alpha/metabolism MH - Ubiquitin-Protein Ligases/metabolism MH - Rats OTO - NOTNLM OT - Bortezomib OT - EMT OT - IkappaBalpha OT - chronic allograft dysfunction OT - kidney transplantation EDAT- 2020/12/09 06:00 MHDA- 2021/08/17 06:00 CRDT- 2020/12/08 08:34 PHST- 2020/08/12 00:00 [received] PHST- 2020/11/26 00:00 [revised] PHST- 2020/12/08 00:00 [accepted] PHST- 2020/12/09 06:00 [pubmed] PHST- 2021/08/17 06:00 [medline] PHST- 2020/12/08 08:34 [entrez] AID - 227193 [pii] AID - 10.1042/CS20201038 [doi] PST - ppublish SO - Clin Sci (Lond). 2021 Jan 15;135(1):53-69. doi: 10.1042/CS20201038.