Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization
Ye-Hui Chen,1,* Ru-Nan Dong,1,* Jian Hou,1,* Ting-Ting Lin,1,* Shao-Hao Chen,1 Hang Chen,1 Jun-Ming Zhu,1 Jia-Yin Chen,1 Zhi-Bin Ke,1 Fei Lin,1 Xue-Yi Xue,1 Yong Wei,1 Ning Xu1,2 1Department of Urology, Urology Research Institute, the First Affiliated Hospital, Fujian...
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Dove Medical Press
2021
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oai:doaj.org-article:2667699c0f464b8596dd0e3fbb08f4bc2021-12-02T16:39:49ZMesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization1178-7031https://doaj.org/article/2667699c0f464b8596dd0e3fbb08f4bc2021-07-01T00:00:00Zhttps://www.dovepress.com/mesenchymal-stem-cell-derived-exosomes-induced-by-il-1-attenuate-ureth-peer-reviewed-fulltext-article-JIRhttps://doaj.org/toc/1178-7031Ye-Hui Chen,1,* Ru-Nan Dong,1,* Jian Hou,1,* Ting-Ting Lin,1,* Shao-Hao Chen,1 Hang Chen,1 Jun-Ming Zhu,1 Jia-Yin Chen,1 Zhi-Bin Ke,1 Fei Lin,1 Xue-Yi Xue,1 Yong Wei,1 Ning Xu1,2 1Department of Urology, Urology Research Institute, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, People’s Republic of China; 2Fujian Key Laboratory of Precision Medicine for Cancer, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, People’s Republic of China*These authors contributed equally to this workCorrespondence: Ning Xu; Yong WeiDepartment of Urology, Urology Research Institute, the First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Fuzhou, 350005, People’s Republic of ChinaTel +86-059187981687Email drxun@fjmu.edu.cn; weiyong2017@fjmu.edu.cnBackground: Urethral stricture is a clinical challenge for both patients and clinicians. Post-traumatic urethral stricture is associated with formation of scar tissue caused by excessive inflammation. The aim of this study is exploring potential therapeutic strategies for this condition.Methods: In vivo experiments on New Zealand rabbits and in vitro experiments on THP-1 monocytes and urethral fibroblasts were performed to investigate the effects on post-traumatic urethral stricture of exosomes isolated from IL-1β-treated mesenchymal stem cells (Exo-MSCsIL− 1β) and the role of macrophage M2 polarization in this process. Additionally, related signaling and mechanism behind were explored.Results: In a New Zealand rabbit model of post-traumatic urethral stricture, injection of Exo-MSCsIL− 1β significantly reduced urethral stricture and collagen fiber accumulation compared with Exo-MSCs. Addition of Exo-MSCsIL− 1β to THP-1 monocytes in vitro induced M2 macrophage polarization, which, in turn, inhibited activation of urethral fibroblasts and synthesis of collagen. Mechanistically, Exo-MSCsIL− 1β were found to contain high levels of the microRNA let-7c, and luciferase reporter assays showed that let-7c interacted with the 3′UTR of PAK1 mRNA. Transfection of THP-1 cells with a let-7c mimic downregulated PAK1 expression and inhibited activation of the NF-κB signaling pathway.Conclusion: These results support a role for let-7c-containing Exo-MSCsIL− 1β in reducing urethral stricture via inhibition of PAK1–NF-κB signaling, M2 macrophage polarization, and differentiation of urethral myofibroblasts.Keywords: urethral stricture, mesenchymal stem cells, polarization of macrophages, exosomes, let-7cChen YHDong RNHou JLin TTChen SHChen HZhu JMChen JYKe ZBLin FXue XYWei YXu NDove Medical Pressarticleurethral stricturemesenchymal stem cellspolarization of macrophagesexosomeslet-7cPathologyRB1-214Therapeutics. PharmacologyRM1-950ENJournal of Inflammation Research, Vol Volume 14, Pp 3217-3229 (2021) |
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DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
urethral stricture mesenchymal stem cells polarization of macrophages exosomes let-7c Pathology RB1-214 Therapeutics. Pharmacology RM1-950 |
| spellingShingle |
urethral stricture mesenchymal stem cells polarization of macrophages exosomes let-7c Pathology RB1-214 Therapeutics. Pharmacology RM1-950 Chen YH Dong RN Hou J Lin TT Chen SH Chen H Zhu JM Chen JY Ke ZB Lin F Xue XY Wei Y Xu N Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization |
| description |
Ye-Hui Chen,1,* Ru-Nan Dong,1,* Jian Hou,1,* Ting-Ting Lin,1,* Shao-Hao Chen,1 Hang Chen,1 Jun-Ming Zhu,1 Jia-Yin Chen,1 Zhi-Bin Ke,1 Fei Lin,1 Xue-Yi Xue,1 Yong Wei,1 Ning Xu1,2 1Department of Urology, Urology Research Institute, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, People’s Republic of China; 2Fujian Key Laboratory of Precision Medicine for Cancer, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, People’s Republic of China*These authors contributed equally to this workCorrespondence: Ning Xu; Yong WeiDepartment of Urology, Urology Research Institute, the First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Fuzhou, 350005, People’s Republic of ChinaTel +86-059187981687Email drxun@fjmu.edu.cn; weiyong2017@fjmu.edu.cnBackground: Urethral stricture is a clinical challenge for both patients and clinicians. Post-traumatic urethral stricture is associated with formation of scar tissue caused by excessive inflammation. The aim of this study is exploring potential therapeutic strategies for this condition.Methods: In vivo experiments on New Zealand rabbits and in vitro experiments on THP-1 monocytes and urethral fibroblasts were performed to investigate the effects on post-traumatic urethral stricture of exosomes isolated from IL-1β-treated mesenchymal stem cells (Exo-MSCsIL− 1β) and the role of macrophage M2 polarization in this process. Additionally, related signaling and mechanism behind were explored.Results: In a New Zealand rabbit model of post-traumatic urethral stricture, injection of Exo-MSCsIL− 1β significantly reduced urethral stricture and collagen fiber accumulation compared with Exo-MSCs. Addition of Exo-MSCsIL− 1β to THP-1 monocytes in vitro induced M2 macrophage polarization, which, in turn, inhibited activation of urethral fibroblasts and synthesis of collagen. Mechanistically, Exo-MSCsIL− 1β were found to contain high levels of the microRNA let-7c, and luciferase reporter assays showed that let-7c interacted with the 3′UTR of PAK1 mRNA. Transfection of THP-1 cells with a let-7c mimic downregulated PAK1 expression and inhibited activation of the NF-κB signaling pathway.Conclusion: These results support a role for let-7c-containing Exo-MSCsIL− 1β in reducing urethral stricture via inhibition of PAK1–NF-κB signaling, M2 macrophage polarization, and differentiation of urethral myofibroblasts.Keywords: urethral stricture, mesenchymal stem cells, polarization of macrophages, exosomes, let-7c |
| format |
article |
| author |
Chen YH Dong RN Hou J Lin TT Chen SH Chen H Zhu JM Chen JY Ke ZB Lin F Xue XY Wei Y Xu N |
| author_facet |
Chen YH Dong RN Hou J Lin TT Chen SH Chen H Zhu JM Chen JY Ke ZB Lin F Xue XY Wei Y Xu N |
| author_sort |
Chen YH |
| title |
Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization |
| title_short |
Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization |
| title_full |
Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization |
| title_fullStr |
Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization |
| title_full_unstemmed |
Mesenchymal Stem Cell-Derived Exosomes Induced by IL-1β Attenuate Urethral Stricture Through Let-7c/PAK1/NF-κB-Regulated Macrophage M2 Polarization |
| title_sort |
mesenchymal stem cell-derived exosomes induced by il-1β attenuate urethral stricture through let-7c/pak1/nf-κb-regulated macrophage m2 polarization |
| publisher |
Dove Medical Press |
| publishDate |
2021 |
| url |
https://doaj.org/article/2667699c0f464b8596dd0e3fbb08f4bc |
| work_keys_str_mv |
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1718383562622763008 |