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Wu JJ, Yu H, Bi SG, Wang ZX, Gong J, Mao YM, Wang FZ, Zhang YQ, Nie YJ, Chai GS. Aerobic exercise attenuates autophagy-lysosomal flux deficits by ADRB2/β2-adrenergic receptor-mediated V-ATPase assembly factor VMA21 signaling in APP-PSEN1/PS1 mice. Autophagy 2023:1-17. [PMID: 37964627 DOI: 10.1080/15548627.2023.2281134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 11/03/2023] [Indexed: 11/16/2023] Open
Abstract
Growing evidence suggests that macroautophagy/autophagy-lysosomal pathway deficits contribute to the accumulation of amyloid-β (Aβ) in Alzheimer disease (AD). Aerobic exercise (AE) has long been investigated as an approach to delay and treat AD, although the exact role and mechanism are not well known. Here, we revealed that AE could reverse autophagy-lysosomal deficits via activation of ADRB2/β2-adrenergic receptor, leading to significant attenuation of amyloid-β pathology in APP-PSEN1/PS1 mice. Molecular mechanism research found that AE could reverse autophagy deficits by upregulating the AMP-activated protein kinase (AMPK)-MTOR (mechanistic target of rapamycin kinase) signaling pathway. Moreover, AE could reverse V-ATPase function by upregulating VMA21 levels. Inhibition of ADRB2 by propranolol (antagonist, 30 μM) blocked AE-attenuated Aβ pathology and cognitive deficits by inhibiting autophagy-lysosomal flux. AE may mitigate AD via many pathways, while ADRB2-VMA21-V-ATPase could improve cognition by enhancing the clearance of Aβ through the autophagy-lysosomal pathway, which also revealed a novel theoretical basis for AE attenuating pathological progression and cognitive deficits in AD.
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Affiliation(s)
- Jia-Jun Wu
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
- Department of electrophysiology, Wuhan Children's Hospital (Wuhan Maternal and Children's Healthcare Center), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Haitao Yu
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Shu-Guang Bi
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhong-Xuan Wang
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Juan Gong
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yu-Ming Mao
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Fang-Zhou Wang
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yu-Qi Zhang
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yun-Juan Nie
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Gao-Shang Chai
- Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
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Wu YX, Zhang YR, Jiang FJ, He S, Zhang YL, Chen D, Tong Y, Nie YJ, Pang QF. 4-OI ameliorates bleomycin-induced pulmonary fibrosis by activating Nrf2 and suppressing macrophage-mediated epithelial-mesenchymal transition. Inflamm Res 2023:10.1007/s00011-023-01733-z. [PMID: 37169970 DOI: 10.1007/s00011-023-01733-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/03/2023] [Accepted: 04/11/2023] [Indexed: 05/13/2023] Open
Abstract
OBJECTIVES Pulmonary fibrosis (PF) is a chronic and refractory interstitial lung disease with limited therapeutic options. 4-octyl itaconate (4-OI), a cell-permeable derivative of itaconate, has been shown to have anti-oxidative and anti-inflammatory properties. However, the effect and the underlying mechanism of 4-OI on PF are still unknown. METHODS WT or Nrf2 knockout (Nrf2-/-) mice were intratracheally injected with bleomycin (BLM) to establish PF model and then treated with 4-OI. The mechanism study was performed by using RAW264.7 cells, primary macrophages, and conditional medium-cultured MLE-12 cells. RESULTS 4-OI significantly alleviated BLM-induced PF and EMT process. Mechanism studies have found that 4-OI can not only directly inhibit EMT process, but also can reduce the production of TGF-β1 by restraining macrophage M2 polarization, which in turn inhibits EMT process. Moreover, the effect of 4-OI on PF and EMT depends on Nrf2. CONCLUSION 4-OI ameliorates BLM-induced PF in an Nrf2-dependent manner, and its role in alleviating PF is partly due to the direct inhibition on EMT, and partly through indirect inhibition of M2-mediated EMT. These findings suggested that 4-OI has great clinical potential to develop as a new anti-fibrotic agent for PF therapy.
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Affiliation(s)
- Ya-Xian Wu
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
- Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Ya-Ru Zhang
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Feng-Juan Jiang
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Shuai He
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Yan-Li Zhang
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Dan Chen
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Ying Tong
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Yun-Juan Nie
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China.
| | - Qing-Feng Pang
- Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, People's Republic of China.
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Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal chronic interstitial lung disease with no established treatment and is characterized by progressive scarring of the lung tissue and an irreversible decline in lung function. Chronic inflammation has been demonstrated to be the pathological basis of fibrosis. Emerging studies have revealed that most interleukin-17 (IL-17) isoforms are essential for the mediation of acute and chronic inflammation via innate and adaptive immunity. Overexpression or aberrant expression of IL-17 cytokines contributes to various pathological outcomes, including the initiation and exacerbation of IPF. Here, we aim to provide an overview of IL-17 family members in the pathogenesis of IPF.
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Affiliation(s)
- Yun-Juan Nie
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, 214000, Jiangsu, China
| | - Shuo-Hua Wu
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, 515000, Shandong, China
| | - Ying-Hua Xuan
- Department of Basic Medicine, Xiamen Medical College, Xiamen, 361000, Fujian, China
| | - Gen Yan
- Department of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, 361000, Fujian, China.
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Wu YX, Jiang FJ, Liu G, Wang YY, Gao ZQ, Jin SH, Nie YJ, Chen D, Chen JL, Pang QF. Dehydrocostus Lactone Attenuates Methicillin-Resistant Staphylococcus aureus-Induced Inflammation and Acute Lung Injury via Modulating Macrophage Polarization. Int J Mol Sci 2021; 22:ijms22189754. [PMID: 34575918 PMCID: PMC8472345 DOI: 10.3390/ijms22189754] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/05/2021] [Accepted: 09/07/2021] [Indexed: 02/07/2023] Open
Abstract
Dehydrocostus lactone (DHL), a natural sesquiterpene lactone isolated from the traditional Chinese herbs Saussurea lappa and Inula helenium L., has important anti-inflammatory properties used for treating colitis, fibrosis, and Gram-negative bacteria-induced acute lung injury (ALI). However, the effects of DHL on Gram-positive bacteria-induced macrophage activation and ALI remains unclear. In this study, we found that DHL inhibited the phosphorylation of p38 MAPK, the degradation of IκBα, and the activation and nuclear translocation of NF-κB p65, but enhanced the phosphorylation of AMP-activated protein kinase (AMPK) and the expression of Nrf2 and HO-1 in lipoteichoic acid (LTA)-stimulated RAW264.7 cells and primary bone-marrow-derived macrophages (BMDMs). Given the critical role of the p38 MAPK/NF-κB and AMPK/Nrf2 signaling pathways in the balance of M1/M2 macrophage polarization and inflammation, we speculated that DHL would also have an effect on macrophage polarization. Further studies verified that DHL promoted M2 macrophage polarization and reduced M1 polarization, then resulted in a decreased inflammatory response. An in vivo study also revealed that DHL exhibited anti-inflammatory effects and ameliorated methicillin-resistant Staphylococcus aureus (MRSA)-induced ALI. In addition, DHL treatment significantly inhibited the p38 MAPK/NF-κB pathway and activated AMPK/Nrf2 signaling, leading to accelerated switching of macrophages from M1 to M2 in the MRSA-induced murine ALI model. Collectively, these data demonstrated that DHL can promote macrophage polarization to an anti-inflammatory M2 phenotype via interfering in p38 MAPK/NF-κB signaling, as well as activating the AMPK/Nrf2 pathway in vitro and in vivo. Our results suggested that DHL might be a novel candidate for treating inflammatory diseases caused by Gram-positive bacteria.
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Affiliation(s)
- Ya-Xian Wu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Feng-Juan Jiang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Gang Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Ying-Ying Wang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Zhi-Qi Gao
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Si-Hao Jin
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Yun-Juan Nie
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Dan Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Jun-Liang Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
| | - Qing-Feng Pang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China; (Y.-X.W.); (F.-J.J.); (G.L.); (Y.-Y.W.); (Z.-Q.G.); (S.-H.J.); (Y.-J.N.); (D.C.); (J.-L.C.)
- Correspondence:
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Luo Y, Nie YJ, Shi HR, Ni ZF, Wang Q, Wang JZ, Liu GP. PTPA activates protein phosphatase-2A through reducing its phosphorylation at tyrosine-307 with upregulation of protein tyrosine phosphatase 1B. Biochim Biophys Acta 2013; 1833:1235-43. [PMID: 23428800 DOI: 10.1016/j.bbamcr.2013.02.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 02/05/2013] [Accepted: 02/08/2013] [Indexed: 11/24/2022]
Abstract
Protein phosphatase-2A (PP2A), an important phosphatase in dephosphorylating tau and preserving synapse, is significantly suppressed in Alzheimer's disease (AD), but the mechanism is not well understood. Here, we studied whether phosphotyrosyl phosphatase activator (PTPA) could activate PP2A by reducing its inhibitory phosphorylation at tyrosine 307 (P-PP2AC). We found that overexpression of PTPA activated PP2A by decreasing the level of P-PP2AC with reduced phosphorylation of tau, while knockdown of PTPA inhibited PP2A by increasing the level of P-PP2AC with enhanced tau phosphorylation. We also observed that expression of PTPA could upregulate the protein and mRNA levels of protein tyrosine phosphatase 1B (PTP1B) and simultaneous downregulation of PTP1B eliminated PTPA-induced PP2A activation. Importantly, we also found that the protein level of PTPA is downregulated in the brains of AD patients, and the AD transgenic mouse models with expression of mutant human amyloid precursor protein (hAPP) or the longest human tau (htau), respectively. Our data indicate that PTPA may activate PP2A through activating PTP1B and thus reducing the level of P-PP2AC, therefore upregulation of PTPA may represent a potential strategy in rescuing PP2A and arresting tau pathology in AD.
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Affiliation(s)
- Yu Luo
- Department of Pathophysiology, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Kavikondala S, Nie YJ, Lau CS. Report on the second Asia Autoimmunity Forum 3-5 March 2006, Hong Kong. Autoimmun Rev 2006; 6:115-8. [PMID: 17138255 DOI: 10.1016/j.autrev.2006.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
On March 3-5, 2006, The HK Society of Rheumatology, University of Hong Kong and Singapore National Arthritis Foundation organized the second Asia Autoimmunity Forum (AAF) in Hong Kong which was attended by over 200 delegates from around Asia. More than 20 invited international and regional experts in the field of autoimmune rheumatic diseases spoke on topics including the pathogenetic mechanisms, clinical aspects and novel therapeutic approaches of autoimmune rheumatic diseases. There were 8 plenary lectures and 4 symposia and the AAF provided an excellent avenue to promote the co-ordination and knowledge exchange in the area of autoimmune rheumatic diseases in Asia.
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Affiliation(s)
- S Kavikondala
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
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