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Wang T, Fu P, Huang W, Long L, Long F, Liu S. Bronchial thermoplasty decreases airway remodeling by inhibiting autophagy via the AMPK/mTOR signaling pathway. Acta Biochim Biophys Sin (Shanghai) 2024. [PMID: 38655617 DOI: 10.3724/abbs.2024028] [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] [Indexed: 04/26/2024] Open
Abstract
Bronchial thermoplasty (BT), an effective treatment for severe asthma, requires heat to reach the airway to reduce the mass of airway smooth muscle cells (ASMCs). Autophagy is involved in the pathological process of airway remodeling in patients with asthma. However, it remains unclear whether autophagy participates in controlling airway remodeling induced by BT. In this study, we aim to elucidate the autophagy-mediated molecular mechanisms in BT. Our study reveal that the number of autophagosomes and the level of alpha-smooth muscle actin (α-SMA) fluorescence are significantly decreased in airway biopsy tissues after BT. As the temperature increased, BT causes a decrease in cell proliferation and a concomitant increase in the apoptosis of human airway smooth muscle cells (HASMCs). Furthermore, increase in temperature significantly downregulates cellular autophagy, autophagosome accumulation, the LC3II/LC3I ratio, and Beclin-1 expression, upregulates p62 expression, and inhibits the AMPK/mTOR pathway. Furthermore, cotreatment with AICAR (an AMPK agonist) or RAPA (an mTOR antagonist) abolishes the inhibition of autophagy and attenuates the increase in the apoptosis rate of HASMCs induced by the thermal effect. Therefore, we conclude that BT decreases airway remodeling by blocking autophagy induced by the AMPK/mTOR signaling pathway in HASMCs.
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Affiliation(s)
- Tao Wang
- Department of Pulmonary and Critical Care Medicine, University of Chinese Academy of Sciences Shenzhen Hospital, Shenzhen 518106, China
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Peng Fu
- Department of Pulmonary and Critical Care Medicine, University of Chinese Academy of Sciences Shenzhen Hospital, Shenzhen 518106, China
| | - Wenting Huang
- Department of Pulmonary and Critical Care Medicine, University of Chinese Academy of Sciences Shenzhen Hospital, Shenzhen 518106, China
| | - Liang Long
- Department of Pulmonary and Critical Care Medicine, University of Chinese Academy of Sciences Shenzhen Hospital, Shenzhen 518106, China
| | - Fa Long
- Department of Pulmonary and Critical Care Medicine, University of Chinese Academy of Sciences Shenzhen Hospital, Shenzhen 518106, China
| | - Shengming Liu
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
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Yun Q, Ma SF, Zhang WN, Gu M, Wang J. FoxG1 as a Potential Therapeutic Target for Alzheimer's Disease: Modulating NLRP3 Inflammasome via AMPK/mTOR Autophagy Pathway. Cell Mol Neurobiol 2024; 44:35. [PMID: 38630150 PMCID: PMC11023968 DOI: 10.1007/s10571-024-01467-4] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/27/2024] [Indexed: 04/19/2024]
Abstract
An increasing body of research suggests that promoting microglial autophagy hinders the neuroinflammation initiated though the NLRP3 inflammasome activation in Alzheimer's disease (AD). The function of FoxG1, a crucial transcription factor involved in cell survival by regulating mitochondrial function, remains unknown during the AD process and neuroinflammation occurs. In the present study, we firstly found that Aβ peptides induced AD-like neuroinflammation upregulation and downregulated the level of autophagy. Following low-dose Aβ25-35 stimulation, FoxG1 expression and autophagy exhibited a gradual increase. Nevertheless, with high-concentration Aβ25-35 treatment, progressive decrease in FoxG1 expression and autophagy levels as the concentration of Aβ25-35 escalated. In addition, FoxG1 has a positive effect on cell viability and autophagy in the nervous system. In parallel with the Aβ25-35 stimulation, we employed siRNA to decrease the expression of FoxG1 in N2A cells. A substantial reduction in autophagy level (Beclin1, LC3II, SQSTM1/P62) and a notable growth in inflammatory response (NLRP3, TNF-α, and IL-6) were observed. In addition, we found FoxG1 overexpression owned the effect on the activation of AMPK/mTOR autophagy pathway and siRNA-FoxG1 successfully abolished this effect. Lastly, FoxG1 suppressed the NLRP3 inflammasome and enhanced the cognitive function in AD-like mouse model induced by Aβ25-35. Confirmed by cellular and animal experiments, FoxG1 suppressed NLRP3-mediated neuroinflammation, which was strongly linked to autophagy regulated by AMPK/mTOR. Taken together, FoxG1 may be a critical node in the pathologic progression of AD and has the potential to serve as therapeutic target.
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Affiliation(s)
- Qi Yun
- Changzhou Children's Hospital Affiliated to Nantong University, 958 Zhongwu Avenue, Changzhou, 213000, Jiangsu Province, China
| | - Si-Fei Ma
- Changzhou Blood Center, 118 Canal Road, Changzhou, 213000, Jiangsu Province, China
| | - Wei-Ning Zhang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 213000, Jiangsu Province, China
| | - Meng Gu
- Changzhou Children's Hospital Affiliated to Nantong University, 958 Zhongwu Avenue, Changzhou, 213000, Jiangsu Province, China.
| | - Jia Wang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 213000, Jiangsu Province, China.
- The Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu Province, PR China.
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Li H, Zeng Y, Wang G, Zhang K, Gong W, Li Z, Tian J, Xia Y, Xie W, Xie J, Xie S, Yu E. Betaine improves appetite regulation and glucose-lipid metabolism in mandarin fish ( Siniperca chuatsi) fed a high-carbohydrate-diet by regulating the AMPK/mTOR signaling. Heliyon 2024; 10:e28423. [PMID: 38623237 PMCID: PMC11016588 DOI: 10.1016/j.heliyon.2024.e28423] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/13/2024] [Accepted: 03/19/2024] [Indexed: 04/17/2024] Open
Abstract
Diets with high carbohydrate (HC) was reported to have influence on appetite and intermediary metabolism in fish. To illustrate whether betaine could improve appetite and glucose-lipid metabolism in aquatic animals, mandarin fish (Siniperca chuatsi) were fed with the HC diets with or without betaine for 8 weeks. The results suggested that betaine enhanced feed intake by regulating the hypothalamic appetite genes. The HC diet-induced downregulation of AMPK and appetite genes was also positively correlated with the decreased autophagy genes, suggesting a possible mechanism that AMPK/mTOR signaling might regulate appetite through autophagy. The HC diet remarkably elevated transcriptional levels of genes related to lipogenesis, while betaine alleviated the HC-induced hepatic lipid deposition. Additionally, betaine supplementation tended to store the energy storage as hepatic glycogen. Our findings proposed the possible mechanism for appetite regulation through autophagy via AMPK/mTOR, and demonstrated the feasibility of betaine as an aquafeed additive to regulate appetite and intermediary metabolism in fish.
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Affiliation(s)
- Hongyan Li
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, CAS, China
- Fujian Province Key Laboratory of Special Aquatic Formula Feed (Fujian Tianma Science and Technology Group Co., Ltd.), Fuqing, 350308, China
| | - Yanzhi Zeng
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Guangjun Wang
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Kai Zhang
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Wangbao Gong
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Zhifei Li
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Jingjing Tian
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Yun Xia
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Wenping Xie
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Jun Xie
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Shouqi Xie
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, CAS, China
| | - Ermeng Yu
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
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肖 红, 韩 保, 郭 家, 吴 超, 吴 敬. [HTD4010 attenuates myocardial injury in mice with septic cardiomyopathy by promoting autophagy via the AMPK/mTOR signaling pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:507-514. [PMID: 38597442 PMCID: PMC11006686 DOI: 10.12122/j.issn.1673-4254.2024.03.12] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Indexed: 04/11/2024]
Abstract
OBJECTIVE To investigate the protective effects of HTD4010 against lipopolysaccharide (LPS)-induced septic cardiomyopathy (SCM) in mice and explore the mechanisms mediating its effect. METHODS Forty-five male ICR mice were randomized equally into control group, LPS (10 mg/kg) group, and LPS+HTD4010 group (in which 2.5 mg/kg HTD4010 was injected subcutaneously at 1 h and 6 h after LPS injection). Cardiac function of the mice was evaluated by ultrasound, and pathological changes in the myocardial tissues were observed with HE staining. The levels of IL-6 and TNF-α in serum and myocardial tissues were detected using ELISA, and apoptosis of the cardiomyocytes was detected with TUNEL staining. The expression levels of the key proteins associated with apoptosis, autophagy and the AMPK/mTOR pathway in the myocardial tissues were detected using Western blotting. The ultrastructural changes of cardiac myocardial mitochondria was observed with transmission electron microscopy. RESULTS LPS exposure caused severe myocardial damage in mice, characterized by myocardial fiber rupture, structural disorder, inflammatory cell infiltration, and mitochondrial damage. The LPS-treated mice exhibited significantly decreased cardiac LVEF and FS values, elevated IL-6 and TNF-αlevels in serum and myocardial tissue, and an increased myocardial cell apoptosis rate with enhanced expressions of Bax, p-62 and p-mTOR and lowered expressions of Bcl-2, LC3 II/I, Beclin-1 and p-AMPK (P < 0.05 or 0.01). Treatment of the septic mice with HTD4010 significantly alleviated myocardial damage, increased LVEF and FS values, reduced IL-6 and TNF-α levels in serum and myocardial tissue, decreased cardiomyocyte apoptosis, lowered myocardial expressions of Bax, p-62 and p-mTOR, and increased Bcl-2, LC3 II/I, Beclin-1 and p-AMPK expressions (P < 0.05 or 0.01). CONCLUSION HTD4010 can attenuate myocardial injury in SCM mice possibly by promoting autophagy via modulating the AMPK/mTOR signaling pathway.
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Affiliation(s)
- 红敏 肖
- 皖南医学院第一附属医院急诊科,安徽 芜湖 241002Department of Emergency Medicine of First Affiliated Hospital, Wannan Medical College, Wuhu 241002, China
| | - 保松 韩
- 皖南医学院第一附属医院急诊科,安徽 芜湖 241002Department of Emergency Medicine of First Affiliated Hospital, Wannan Medical College, Wuhu 241002, China
| | - 家成 郭
- 皖南医学院病理生理学教研室,安徽 芜湖 241002Department of Pathophysiology, Wannan Medical College, Wuhu 241002, China
| | - 超 吴
- 皖南医学院病理生理学教研室,安徽 芜湖 241002Department of Pathophysiology, Wannan Medical College, Wuhu 241002, China
| | - 敬医 吴
- 皖南医学院第一附属医院急诊科,安徽 芜湖 241002Department of Emergency Medicine of First Affiliated Hospital, Wannan Medical College, Wuhu 241002, China
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Pan SM, Wang CL, Hu ZF, Zhang ML, Pan ZF, Zhou RY, Wang XJ, Huang SW, Li YY, Wang Q, Luo X, Zhou L, Hou JT, Chen B. Baitouweng decoction repairs the intestinal barrier in DSS-induced colitis mice via regulation of AMPK/mTOR-mediated autophagy. J Ethnopharmacol 2024; 318:116888. [PMID: 37437793 DOI: 10.1016/j.jep.2023.116888] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ulcerative colitis (UC) is one of non-specific inflammatory bowel disease that mainly affects the colon. Recently, UC has become a significant social and economic problem worldwide. Baitouweng decoction (BD), a traditional Chinese medicine described in the "Treatise on Febrile Diseases", has been used for centuries to treat intestinal diseases. However, its underlying mechanism remains largely unexplored. AIM OF STUDY In this study, we aimed to investigate the effect of BD on autophagy for repairing the colonic barrier in DSS-induced colitis mice and explored its role in regulating the autophagic signaling pathway AMPK/mTOR. MATERIALS AND METHODS Mice with colitis were treated with 3% dextran sulfate sodium (DSS) for 7 days. The effectiveness of BD in treating DSS-induced colitis was evaluated through body weight, disease activity index (DAI), colon length, pathological changes, organ index, and proportion of blood cells. Moreover, intestinal epithelial permeability was analyzed by examining FITC-dextran leakage, the bacterial load of mesenteric lymph nodes (MLNs), and bacterial infiltration of colon tissues. Barrier function was evaluated by assessing the number and proportion of colonic goblet cells and the expression of tight junction proteins, including ZO-1, claudin-1, and occludin. Furthermore, the levels of autophagy were assessed by examining the number of autophagosomes and the expression of the autophagy-related proteins LC3, Beclin1, and P62. Additionally, network pharmacology research was conducted to analyze the potential mechanisms underlying the medicinal effects, as indicated by the role of AMPK/mTOR in regulating the autophagic signaling pathway. RESULTS BD improved colitis symptoms in mice by restoring body weight and colon length and reducing inflammatory cell infiltration. Additionally, BD decreased the diffusion of FITC-dextran and bacterial translocation in MLNs, as well as bacterial infiltration of the colonic mucosa. The number and proportion of colonic goblet cells, the expression of ZO-1, Claudin-1, and Occludin, and the levels of autophagy were also increased by BD. Network pharmacology analysis suggested that BD might affect intestinal autophagy through the AMPK signaling pathway, which was confirmed by the activation of AMPK phosphorylation and the downregulation of mTOR expression following BD treatment. CONCLUSION Our study demonstrated that BD repaired the intestinal epithelial barrier in DSS-induced colitis mice by activating AMPK phosphorylation and inhibiting mTOR expression to promote autophagy.
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Affiliation(s)
- Si-Min Pan
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Chun-Li Wang
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Zhi-Fan Hu
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Mei-Ling Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Zeng-Feng Pan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Ruo-Yu Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; The First Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Xiao-Jing Wang
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Shao-Wei Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yan-Yang Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Qing Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xia Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Lian Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jiang-Tao Hou
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
| | - Bin Chen
- Department of Gastroenterology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
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Liu X, Fan L, Li J, Bai Z, Wang Y, Liu Y, Jiang H, Tao A, Li X, Zhang H, Tan N. Mailuoning oral liquid attenuates convalescent cerebral ischemia by inhibiting AMPK/mTOR-associated apoptosis and promoting CREB/BDNF-mediated neuroprotection. J Ethnopharmacol 2023; 317:116731. [PMID: 37277084 DOI: 10.1016/j.jep.2023.116731] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 05/14/2023] [Accepted: 06/02/2023] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ischemic stroke is divided into acute, subacute and convalescent phases according to the time of onset. Clinically, Mailuoning oral liquid (MLN O) is a traditional Chinese patent medicine for treating ischemic stroke. Previous studies have shown that MLN O could prevent acute cerebral ischemia-reperfusion. However, its underlying mechanism remains unclear. AIM OF THE STUDY To investigate the relationship between neuroprotection and apoptosis for clarifying MLN O mechanism in the recovery phase of ischemic stroke. MATERIALS AND METHODS We imitated stroke using middle cerebral artery occlusion/reperfusion (MCAO/R) in vivo and oxygen-glucose deprivation/reoxygenation (OGD/R) in vitro models. The infarct volume, neurological deficit scores, HE staining, Nissl staining, TUNEL staining, immunohistochemistry, and Western blot were correspondingly performed to find pathological changes and detect neuronal apoptosis in rat cerebral cortex. The contents of LDH, Cyt-c, c-AMP and BDNF in rat plasma and cerebral cortex were detected by ELISA. Cell viability was measured by CCK8 assay. Cell morphology, Hoechst 33342 staining and Annexin-V-Alexa Fluor 647/PI staining were performed to assess neuronal apoptosis. The expression levels of proteins were evaluated by western blotting. RESULTS MLN O obviously reduced brain infarct volume and neurological deficit scores in MCAO rats. MLN O inhibited inflammatory cell infiltration and neuronal apoptosis, but promoted gliosis, neuronal survival, and neuroprotection in the cortical region of MCAO rats. Additionally, MLN O decreased the amount of LDH and cytochrome c, while increasing the expression of c-AMP in the plasma and ischemic cerebral cortex of MCAO rats, and promoting the expression of BDNF in the cortical tissue of MCAO rats. Besides, MLN O improved cell viability, restored cell morphology, while attenuating cell damage, inhibiting neuronal apoptosis following OGD/R in PC-12 cells. Moreover, MLN O inhibited apoptosis by suppressing the expression of pro-apoptotic-associated proteins, including Bax, cytochrome c, Cleaved caspase 3 and HIF-1α, whereas accelerating the expression of Bcl-2 in vivo and in vitro. Furthermore, MLN O inhibited the activity of AMP-activated protein kinase (AMPK)/mechanistic target of rapamycin (mTOR), but activated the signaling pathway of cAMP-response element binding protein (CREB)/brain-derived neurotrophic factor (BDNF) in MCAO rats and OGD/R-stimulated PC-12 cells. CONCLUSIONS These results demonstrated that MLN O inhibited AMPK/mTOR to affect apoptosis associated with mitochondria, leading to improve CREB/BDNF-mediated neuroprotection in the recovery period of ischemic stroke in vivo and in vitro.
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Affiliation(s)
- Xiaoqiong Liu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Lingling Fan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Jian Li
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; Jinling Pharmaceutical Co., Ltd., Nanjing, 210009, China
| | - Ziyu Bai
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yue Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yafang Liu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Hong Jiang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Anhua Tao
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xiang Li
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Hui Zhang
- Jinling Pharmaceutical Co., Ltd., Nanjing, 210009, China
| | - Ninghua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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Luo D, Chen S, Wang X, Wang Y, Khoso PA, Xu S, Li S. Unraveling the mechanism of quercetin alleviating perfluorooctane sulfonate-induced apoptosis in grass carp (Ctenopharyngodon idellus) hepatocytes: AMPK/mTOR-mediated mitophagy. Aquat Toxicol 2023; 265:106769. [PMID: 37980849 DOI: 10.1016/j.aquatox.2023.106769] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/21/2023]
Abstract
Exposure to persistent new organic pollutants in the environment often leads to high mortality and causes serious economic losses to the aquaculture industry. Currently, perfluorooctane sulfonate (PFOS) is persistent and bio-accumulative in the environment, causing potential risks to aquatic ecosystems, but its toxicity mechanism to aquatic organisms is still unclear. As a natural flavonoid compound, quercetin (QU) has many biological activities such as anti-oxidation, anti-inflammatory, anti-apoptosis and immune regulation. Whether it can be used as a candidate medicine to alleviate PFOS toxicity needs to be further explored. Therefore, in this study, we treated (Ctenopharyngodon idellus) grass carp hepatocytes (L8824) with PFOS (200 μM) and/or QU (60 μM) for 24 h. The results showed that PFOS significantly increased the release of LDH and active oxygen (ROS) in L8824 cells, and led to the decrease of mitochondrial membrane potential (ΔΨm) and ATP content, the increase of mitochondrial ROS, the disorder of mitochondrial dynamics, and the initiation of Bcl-2/Bax-mediated apoptosis. Surprisingly, QU can alleviate the above PFOS-induced grass carp hepatocyte toxicity. In addition, in order to further explore the protective mechanism of QU, we used the molecular docking to predict the binding site between QU and AMPK, and found that there was a high binding capacity between QU and AMPK. In addition, we used Compound C (CC) and 3-Methyladenine (3-MA) to intervene. The results showed that CC and 3-MA intervention aggravated mitochondrial dysfunction and apoptosis factor expression in the QU+PFOS group. These data indicate that PFOS induces oxidative stress, mitochondrial dysfunction, and apoptosis. The regulation of AMPK/mTOR mediated mitophagy by QU may be a new therapeutic strategy to alleviate the hepatotoxicity of PFOS grass carp. This study provides theoretical basis and reference for exploring the toxic mechanism and biological toxic effects of PFOS, and provides a scheme for improving the economic benefits of aquaculture.
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Affiliation(s)
- Dongliu Luo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Shasha Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xixi Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yixuan Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Pervez Ahmed Khoso
- Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Pakistan
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
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Han D, Kim D, Kim H, Lee J, Lyu J, Kim JS, Shin J, Kim JS, Kim DK, Park HW. Methylsulfonylmethane ameliorates metabolic-associated fatty liver disease by restoring autophagy flux via AMPK/mTOR/ULK1 signaling pathway. Front Pharmacol 2023; 14:1302227. [PMID: 38099147 PMCID: PMC10720622 DOI: 10.3389/fphar.2023.1302227] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/20/2023] [Indexed: 12/17/2023] Open
Abstract
Introduction: Metabolism-associated fatty liver disease (MAFLD) is a global health concern because of its association with obesity, insulin resistance, and other metabolic abnormalities. Methylsulfonylmethane (MSM), an organic sulfur compound found in various plants and animals, exerts antioxidant and anti-inflammatory effects. Here, we aimed to assess the anti-obesity activity and autophagy-related mechanisms of Methylsulfonylmethane. Method: Human hepatoma (HepG2) cells treated with palmitic acid (PA) were used to examine the effects of MSM on autophagic clearance. To evaluate the anti-obesity effect of MSM, male C57/BL6 mice were fed a high-fat diet (HFD; 60% calories) and administered an oral dose of MSM (200 or 400 mg/kg/day). Moreover, we investigated the AMP-activated protein kinase (AMPK)/mechanistic target of rapamycin complex 1 (mTORC1)/UNC-51-like autophagy-activating kinase 1 (ULK1) signaling pathway to further determine the underlying action mechanism of MSM. Results: Methylsulfonylmethane treatment significantly mitigated PA-induced protein aggregation in human hepatoma HepG2 cells. Additionally, Methylsulfonylmethane treatment reversed the PA-induced impairment of autophagic flux. Methylsulfonylmethane also enhanced the insulin sensitivity and significantly suppressed the HFD-induced obesity and hepatic steatosis in mice. Western blotting revealed that Methylsulfonylmethane improved ubiquitinated protein clearance in HFD-induced fatty liver. Remarkably, Methylsulfonylmethane promoted the activation of AMPK and ULK1 and inhibited mTOR activity. Conclusion: Our study suggests that MSM ameliorates hepatic steatosis by enhancing the autophagic flux via an AMPK/mTOR/ULK1-dependent signaling pathway. These findings highlight the therapeutic potential of MSM for obesity-related MAFLD treatment.
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Affiliation(s)
- Daewon Han
- Department of Cell Biology, Konyang University College of Medicine, Daejeon, Republic of Korea
- Myunggok Medical Research Institute, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Deokryong Kim
- Department of Cell Biology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Haeil Kim
- Department of Cell Biology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Jeonga Lee
- Department of Cell Biology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Jungmook Lyu
- Department of Medical Science, Konyang University, Daejeon, Republic of Korea
| | - Jong-Seok Kim
- Myunggok Medical Research Institute, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Jongdae Shin
- Department of Cell Biology, Konyang University College of Medicine, Daejeon, Republic of Korea
- Myunggok Medical Research Institute, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Jeong Sig Kim
- Department of Obstetrics and Gynecology, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Do Kyung Kim
- Department of Anatomy, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Hwan-Woo Park
- Department of Cell Biology, Konyang University College of Medicine, Daejeon, Republic of Korea
- Myunggok Medical Research Institute, Konyang University College of Medicine, Daejeon, Republic of Korea
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9
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Peng YY, Li MX, Li WJ, Xue Y, Miao YF, Wang YL, Fan XC, Tang LL, Song HL, Zhang Q, Li X. DJ1 Ameliorates AD-like Pathology in the Hippocampus of APP/PS1 Mice. Biomed Environ Sci 2023; 36:1028-1044. [PMID: 38098323 DOI: 10.3967/bes2023.133] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/13/2023] [Indexed: 12/18/2023]
Abstract
Objective To explore whether the protein Deglycase protein 1 (DJ1) can ameliorate Alzheimer's disease (AD)-like pathology in Amyloid Precursor Protein/Presenilin 1 (APP/PS1) double transgenic mice and its possible mechanism to provide a theoretical basis for exploring the pathogenesis of AD. Methods Adeno-associated viral vectors (AAV) of DJ1-overexpression or DJ1-knockdown were injected into the hippocampus of 7-month-old APP/PS1 mice to construct models of overexpression or knockdown. Mice were divided into the AD model control group (MC), AAV vector control group (NC), DJ1-overexpression group (DJ1 +), and DJ1-knockdown group (DJ1 -). After 21 days, the Morris water maze test, immunohistochemistry, immunofluorescence, and western blotting were used to evaluate the effects of DJ1 on mice. Results DJ1 + overexpression decreased the latency and increased the number of platform traversals in the water maze test. DJ1 - cells were cured and atrophied, and the intercellular structure was relaxed; the number of age spots and the expression of AD-related proteins were significantly increased. DJ1 + increased the protein expression of Nuclear factor erythroid 2-related factor 2 (NRF2), heme oxygenase-1 (HO-1), light chain 3 (LC3), phosphorylated AMPK (p-AMPK), and B cell lymphoma-2 (BCL-2), as well as the antioxidant levels of total superoxide dismutase (T-SOD), total antioxidant capacity (T-AOC), and Glutathione peroxidase (GSH-PX), while decreasing the levels of Kelch-like hydrates-associated protein 1 (Keap1), mammalian target of rapamycin (mTOR), p62/sequestosome1 (p62/SQSTM1), Caspase3, and malondialdehyde (MDA). Conclusion DJ1-overexpression can ameliorate learning, memory, and AD-like pathology in APP/PS1 mice, which may be related to the activation of the NRF2/HO-1 and AMPK/mTOR pathways by DJ1.
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Affiliation(s)
- Yang Yang Peng
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Meng Xin Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wen Jie Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yuan Xue
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yu Fan Miao
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yu Lin Wang
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Xiao Chen Fan
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Lu Lu Tang
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Han Lu Song
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Qian Zhang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Xing Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan, China
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10
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Wan W, Wang Y, Li L, Ma C, Wang Y, You F. Electroacupuncture Improves Learning and Memory Abilities via Activating AMPK/mTOR-Induced Autophagy in APP/PS1 Mice. Biochem Genet 2023:10.1007/s10528-023-10503-9. [PMID: 37980310 DOI: 10.1007/s10528-023-10503-9] [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: 04/12/2023] [Accepted: 08/11/2023] [Indexed: 11/20/2023]
Abstract
Alzheimer's disease (AD) has become a global public health problem characterized by memory and cognitive impairments. Electroacupuncture (EA) has been indicated to exert promising therapeutic effects on AD. This study aimed to further investigate the underlying mechanism of EA in AD treatment. APP/PS1 transgenic mice and wide-type mice underwent with or without EA treatment at GV20 and BL23 acupoints. Morris water maze test was utilized for examining the learning and memory of mice. Hematoxylin-eosin, Congo red, immunofluorescence, and TUNEL staining were employed for detecting the pathological changes of mouse brain hippocampus. Western blotting was implemented for measuring protein levels of autophagy- and AMPK/mTOR pathway-associated markers. APP/PS1 mice exhibited significant impairments in the spatial learning and memory. EA treatment improved the cognitive impairments, reduced amyloid-beta (Aβ) deposition, and alleviated neuronal apoptosis in the hippocampal tissues of APP/PS1 mice. EA promoted autophagy and activated the AMPK/mTOR signaling pathway in the hippocampus of APP/PS1 mice. EA improves the cognitive deficits, enhances Aβ clearance, and attenuates neuronal apoptosis in APP/PS1 mice in part by activating AMPK/mTOR-mediated autophagy.
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Affiliation(s)
- Wenjun Wan
- Department of Rehabilitation Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Jiangan District, Wuhan, 430014, China
| | - Ying Wang
- Department of Rehabilitation Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Jiangan District, Wuhan, 430014, China
| | - Lei Li
- Department of Rehabilitation Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Jiangan District, Wuhan, 430014, China
| | - Chaoyang Ma
- Department of Rehabilitation Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Jiangan District, Wuhan, 430014, China
| | - Yanfu Wang
- Department of Rehabilitation Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Jiangan District, Wuhan, 430014, China.
| | - Fei You
- Department of Rehabilitation Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Jiangan District, Wuhan, 430014, China.
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11
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Wang Y, Fu M, Xiao W, Zhao Y, Yuan P, Zhang X, Wu W. 3D Elastomeric Stent Functionalized with Antioxidative and Perivascular Tissue Regenerative Activities Ameliorated PVT Deprivation-Induced Vein Graft Failure. Adv Healthc Mater 2023; 12:e2301247. [PMID: 37440681 DOI: 10.1002/adhm.202301247] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/15/2023]
Abstract
Clinically, arterial injuries are always accompanied with perivascular tissue damage, which may contribute to high failure rate of vein grafts due to intimal hyperplasia and acute thrombosis. In this study, a "perivascular tissue (PVT) deprivation" animal model is constructed to mimic clinical scenarios and identify the contribution of arterial PVT to the success of vein grafts. Proteomics analysis suggests that depriving PVT may exacerbate reactive oxygen species (ROS)-induced endothelial apoptosis by up-regulating inflammation response and oxidative stress. Locally administering metformin on vein grafts through 3D-printed external stent (PGS-PCL) shows antioxidative and anti-inflammatory properties to protect cells from ROS invasion, thereafter decreasing acute thrombosis. Moreover, metformin induce rapid regeneration of perivascular adipose tissue in recipient regions, which improves patency by inhibiting intimal hyperplasia. Proteomics, western blot, and in vitro blocking tests reveal that metformin resists endothelial apoptosis through AMPK/mTOR and NFκB signaling pathways. To conclude, PVT deprivation exacerbates inflammatory response and oxidative stress in vein grafts bridging arterial circulation. Metformin-loaded stent ameliorates "PVT damage" related vein graft failure, and enhances patency of through resisting endothelial apoptosis and regenerating arterial PVAT, offering a promising avenue to improve the success of vein grafts in clinic.
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Affiliation(s)
- Yinggang Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
| | - Mingdi Fu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
| | - Weiwei Xiao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
| | - Yajing Zhao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
| | - Pingping Yuan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
| | - Xinchi Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
| | - Wei Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral&Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, P. R. China
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12
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Wang H, He D, Li Z, Gao X, Yang S, Cui M, Ye B, Huang B, Fu S, Liu D. Oral administration of sophoricoside (SOP) inhibits neuronal damage and neuroinflammation to curb neurodegeneration in Parkinson's disease. Chem Biol Interact 2023; 384:110726. [PMID: 37741537 DOI: 10.1016/j.cbi.2023.110726] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 09/09/2023] [Accepted: 09/20/2023] [Indexed: 09/25/2023]
Abstract
Neuronal apoptosis and neuroinflammation are key factors involved in the pathological changes of Parkinson's disease (PD). Sophoricoside (SOP) has shown anti-inflammatory and anti-apoptosis effects in various diseases. However, the role of SOP in PD has not been reported. In this experiment, we found that oral administration of SOP alleviated weight loss and motor symptoms in 1-Methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-injected mice. Further studies revealed that SOP inhibited inflammatory responses and neuronal apoptosis in the midbrain region of MPTP-injected mice. In vitro mechanistic study, we found that SOP exerts neuroprotective effects through a two-sided action. On the one hand, SOP inhibits Lipopolysaccharide (LPS)-induced inflammatory responses in microglia by inhibiting the Nuclear factor kappa-B(NF-κB) pathway. On the other hand, SOP inhibits 1-methyl-4-phenylpyridinium (MPP+)-induced neuronal apoptosis by regulating the Adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) signaling pathway. Thus SOP is expected to be a potential therapeutic agent for PD by targeting neuroinflammation and neuronal apoptosis.
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MESH Headings
- Mice
- Animals
- Parkinson Disease/metabolism
- Neuroinflammatory Diseases
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/metabolism
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/pharmacology
- 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine/therapeutic use
- NF-kappa B/metabolism
- 1-Methyl-4-phenylpyridinium
- Administration, Oral
- Mice, Inbred C57BL
- Disease Models, Animal
- Neuroprotective Agents/pharmacology
- Neuroprotective Agents/therapeutic use
- Neuroprotective Agents/metabolism
- Microglia
- Dopaminergic Neurons
- Mammals/metabolism
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Affiliation(s)
- Hefei Wang
- College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Dewei He
- College of Animal Science, Jilin University, Changchun, China.
| | - Zhe Li
- College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Xiyu Gao
- College of Animal Science, Jilin University, Changchun, China.
| | - Shuo Yang
- College of Animal Science, Jilin University, Changchun, China.
| | - Mingchi Cui
- College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Bojian Ye
- College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Bingxu Huang
- College of Animal Science, Jilin University, Changchun, China.
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Dianfeng Liu
- College of Animal Science, Jilin University, Changchun, China.
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13
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Ma M, Pan Y, Zhang Y, Yang M, Xi Y, Lin B, Hao W, Liu J, Wu L, Liu Y, Qin X. Metformin combined with rapamycin ameliorates podocyte injury in idiopathic membranous nephropathy through the AMPK/mTOR signaling pathway. J Cell Commun Signal 2023:10.1007/s12079-023-00781-8. [PMID: 37702819 DOI: 10.1007/s12079-023-00781-8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 08/01/2023] [Indexed: 09/14/2023] Open
Abstract
Autophagy activation protects against podocyte injury in idiopathic membranous nephropathy (IMN). The AMPK/mTOR signaling pathway is a vital autophagy regulatory pathway. Metformin promotes autophagy, whereas rapamycin is an autophagy agonist. However, the therapeutic mechanisms of metformin and rapamycin in IMN remain unclear. Thus, we examined the mechanisms of action of metformin and rapamycin in IMN by regulating the AMPK/mTOR autophagy signaling pathway. Female Sprague-Dawley (SD) rats were treated with cationic bovine serum albumin (C-BSA) to establish an IMN model and were randomly divided into IMN model, metformin, rapamycin, and metformin + rapamycin groups. A control group was also established. Metformin and rapamycin were used as treatments. Renal histological changes, urinary protein excretion, the protein expression levels of key AMPK/mTOR signaling pathway proteins, renal tissue cell apoptosis, and autophagy-associated proteins (Beclin 1 and LC3) were examined. In addition, a C5b-9 sublysis model using the MPC-5 mouse podocyte cell line was established to verify the effect of metformin combined with rapamycin on podocytes. Metformin combined with rapamycin improved urinary protein excretion in IMN rats. Metformin combined with rapamycin attenuated the inflammatory response, renal fibrosis, and podocyte foot process fusion. In addition, it improved autophagy in podocytes as demonstrated by the enhanced expression of Beclin-1, p-AMPK/AMPK, LC3-II/I, and autophagosomes in podocytes and decreased p-mTOR/mTOR expression. In conclusion, metformin combined with rapamycin decreased proteinuria, improved renal fibrosis and podocyte autophagy via AMPK/mTOR pathway in IMN rats. The metformin and rapamycin decreased proteinuria and inproved renal fibrosis in IMN model rats.
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Affiliation(s)
- Meichen Ma
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Yue Pan
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Yue Zhang
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Mei Yang
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Ying Xi
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Baoxu Lin
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Wudi Hao
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Jianhua Liu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Lina Wu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Yong Liu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China
| | - Xiaosong Qin
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, People's Republic of China.
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14
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Liu M, Chen Z, Zhang H, Cai Z, Liu T, Zhang M, Wu X, Ai F, Liu G, Zeng C, Shen J. Urolithin A alleviates early brain injury after subarachnoid hemorrhage by regulating the AMPK/mTOR pathway-mediated autophagy. Neurochirurgie 2023; 69:101480. [PMID: 37598622 DOI: 10.1016/j.neuchi.2023.101480] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/22/2023]
Abstract
OBJECTIVE Unfavorable outcomes in patients with subarachnoid hemorrhage (SAH) are mainly attributed to early brain injury (EBI). Reduction of neuronal death can improve the prognosis in SAH patients. Autophagy and apoptosis are critical players in neuronal death. Urolithin A (UA) is a natural compound produced by gut bacteria from ingested ellagitannins and ellagic acid. Here, we detected the role of UA in EBI post-SAH. METHODS We established an animal model of SAH in rats by endovascular perforation, with administration of UA, 3-methyladenine (3-MA) and Compound C. SAH grading, neurological function, brain water content, western blotting analysis of levels of proteins related to apoptosis, autophagy and pathways, blood-brain barrier (BBB) integrity, TUNEL staining, and immunofluorescence staining of LC3 were evaluated at 24h after SAH. RESULTS SAH induction led to neurological dysfunctions, BBB disruption, and cerebral edema at 24h post-SAH in rats, which were relieved by UA. Additionally, cortical neuronal apoptosis in SAH rats was also attenuated by UA. Moreover, UA restored autophagy level in SAH rats. Mechanistically, UA activated the AMPK/mTOR pathway. Furthermore, inhibition of autophagy and AMPK limited UA-mediated protection against EBI post-SAH CONCLUSION: UA alleviates neurological deficits, BBB permeability, and cerebral edema by inhibiting cortical neuronal apoptosis through regulating the AMPK/mTOR pathway-dependent autophagy in rats following SAH.
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Affiliation(s)
- Meiqiu Liu
- Department of Neurosurgery, Ningde Municipal Hospital of Ningde Normal University, Ningde 352000, China
| | - Zhen Chen
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Huan Zhang
- Department of Obstetrics, Maternal and Child Health Hospital of Hubei Province Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Zhiji Cai
- Department of Neurosurgery, Ningde Municipal Hospital of Ningde Normal University, Ningde 352000, China
| | - Tiancheng Liu
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Mengli Zhang
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Xian Wu
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Fen Ai
- Department of Emergency, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Ganzhe Liu
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Chao Zeng
- Department of Neurosurgery, Ningde Municipal Hospital of Ningde Normal University, Ningde 352000, China.
| | - Jiancheng Shen
- Department of Neurosurgery, Ningde Municipal Hospital of Ningde Normal University, Ningde 352000, China.
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15
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Tang Y, Liu Y, Zhou H, Lu H, Zhang Y, Hua J, Liao X. Esketamine is neuroprotective against traumatic brain injury through its modulation of autophagy and oxidative stress via AMPK/mTOR-dependent TFEB nuclear translocation. Exp Neurol 2023; 366:114436. [PMID: 37187276 DOI: 10.1016/j.expneurol.2023.114436] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 05/17/2023]
Abstract
Recent clinical studies highlight the neuroprotective effects of esketamine, but its benefits following traumatic brain injury (TBI) have not been defined. Here, we investigated the effects of esketamine following TBI and its associated neuroprotection mechanisms. In our study, controlled cortical impact injury on mice was utilized to induce the TBI model in vivo. TBI mice were randomized to receive vehicle or esketamine at 2 h post-injury for 7 consecutive days. Neurological deficits and brain water content in mice were detected, respectively. Cortical tissues surrounding focal trauma were obtained for Nissl staining, immunofluorescence, immunohistochemistry, and ELISA assay. In vitro, esketamine were added in culture medium after cortical neuronal cells induced by H2O2 (100μM). After exposed for 12h, neuronal cells were obtained for western blotting, immunofluorescence, ELISA and CO-IP assay. Following administration of 2-8 mg/kg esketamine, we observed that 8 mg/kg esketamine produced no additional recovery of neurological function and ability to alleviate brain edema in TBI mice model, so 4 mg/kg esketamine was selected for subsequent experiments. Additionally, esketamine can effectively reduce TBI-induced oxidative stress, the number of damaged neurons, and the number of TUNEL-positive cells in the cortex of TBI models. Meanwhile, the levels of Beclin 1, LC3 II, and the number of LC3-positive cells in injured cortex were also increased following esketamine exposure. Western blotting and immunofluorescence assays showed that esketamine accelerated the nuclear translocation of TFEB, increased the p-AMPKα level and decreased the p-mTOR level. Similar results including nuclear translocation of TFEB, the increases of autophagy-related markers, and influences of AMPK/mTOR pathway were observed in H2O2-induced cortical neuronal cells; however, BML-275 (AMPK inhibitor) can reverse these effects of esketamine. Furthermore, TFEB silencing not only decreased the Nrf2 level in H2O2-induced cortical neuronal cells, but also alleviated the oxidative stress. Importantly, CO-IP confirmed the interaction between TFEB and Nrf2 in cortical neuronal cells. These findings suggested that esketamine exerts the neuroprotective effects of esketamine in TBI mice model via enhancing autophagy and alleviating oxidative stress; its mechanism involves AMPK/mTOR-dependent TFEB nuclear translocation-induced autophagy and TFEB/Nrf2-induced antioxidant system.
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Affiliation(s)
- Yanbin Tang
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China
| | - Yufang Liu
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China
| | - Huanzhu Zhou
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China; School of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Haibo Lu
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China
| | - Yafei Zhang
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China
| | - Jun Hua
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China
| | - Xingzhi Liao
- Department of Anesthesiology, 904th Hospital of The Joint Logistics Support Force of the PLA, Wuxi 214044, Jiangsu, China.
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16
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Feng B, Yu P, Yu H, Qian B, Li Y, Sun K, Shi B, Zhang N, Xu G. Therapeutic effects on the development of heart failure with preserved ejection fraction by the sodium-glucose cotransporter 2 inhibitor dapagliflozin in type 2 diabetes. Diabetol Metab Syndr 2023; 15:141. [PMID: 37386620 DOI: 10.1186/s13098-023-01116-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 06/17/2023] [Indexed: 07/01/2023] Open
Abstract
BACKGROUND Heart failure with preserved ejection fraction (HFpEF) is a common disease with high morbidity and lacks effective treatment. We investigated the protective effects of the long-term application of the sodium-glucose cotransporter 2 inhibitor (SGLT2i) dapagliflozin on diabetes-associated HFpEF in a rat model. Serum proteomics and metabolomics analysis were also conducted in type 2 diabetic patients with HFpEF treated with dapagliflozin. METHODS Male Zucker diabetic fatty (ZDF) rats were used as a model of diabetic cardiomyopathy. From weeks 16 to 28, animals were given a vehicle or dapagliflozin (1 mg/kg) once daily. Primary blood biochemistry indices, echocardiography, histopathology, and cardiac hemodynamics were determined during the study period. The key markers of myocardial fibrosis, nitro-oxidative stress, inflammation, apoptosis, autophagy, and AMPK/mTOR signaling were examined. Additionally, healthy controls and individuals with type 2 diabetes were enrolled and 16 serum samples from 4 groups were randomly selected. Serum proteome and metabolome changes after dapagliflozin treatment were analyzed in diabetic individuals with HFpEF. RESULTS Dapagliflozin effectively prevented the development of HFpEF in rats with diabetes by mitigating nitro-oxidative stress, pro-inflammatory cytokines, myocardial hypertrophy, and fibrosis, reducing apoptosis, and restoring autophagy through AMPK activating and mTOR pathway repressing. Proteomics and metabolomics revealed that cholesterol and high-density lipoprotein particle metabolism, nicotinate and nicotinamide metabolism, arginine biosynthesis, and cAMP and peroxisome proliferator-activated receptor (PPAR) signaling are the major disturbed pathways in HFpEF patients treated with dapagliflozin. CONCLUSION Long-term treatment with dapagliflozin significantly prevented the development of HFpEF in diabetic rats. Dapagliflozin could be a promising therapeutic strategy in managing HFpEF individuals with type 2 diabetes.
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Affiliation(s)
- Bin Feng
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Peiran Yu
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Hao Yu
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Buyun Qian
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Yuan Li
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Kangyun Sun
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Bimin Shi
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Nannan Zhang
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China.
| | - Guidong Xu
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China.
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17
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Khater SI, Almanaa TN, Fattah DMA, Khamis T, Seif MM, Dahran N, Alqahtani LS, Metwally MMM, Mostafa M, Albedair RA, Helal AI, Alosaimi M, Mohamed AAR. Liposome-Encapsulated Berberine Alleviates Liver Injury in Type 2 Diabetes via Promoting AMPK/mTOR-Mediated Autophagy and Reducing ER Stress: Morphometric and Immunohistochemical Scoring. Antioxidants (Basel) 2023; 12:1220. [PMID: 37371950 DOI: 10.3390/antiox12061220] [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: 05/04/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
In the advanced stages of type 2 diabetes mellitus (T2DM), diabetic liver damage is a common complication that can devastate a patient's quality of life. The present study investigated the ability of liposomal berberine (Lip-BBR) to aid in ameliorating hepatic damage and steatosis, insulin homeostasis, and regulating lipid metabolism in type 2 diabetes (T2DM) and the possible pathways by which it does so. Liver tissue microarchitectures and immunohistochemical staining were applied during the study. The rats were divided into a control non-diabetic group and four diabetic groups, which are the T2DM, T2DM-Lip-BBR (10 mg/kg b.wt), T2DM-Vildagliptin (Vild) (10 mg/kg b.wt), and T2DM-BBR-Vild (10 mg/kg b.wt + Vild (5 mg/kg b.wt) groups. The findings demonstrated that Lip-BBR treatment could restore liver tissue microarchitectures, reduce steatosis and liver function, and regulate lipid metabolism. Moreover, Lip-BBR treatment promoted autophagy via the activation of LC3-II and Bclin-1 proteins and activated the AMPK/mTOR pathway in the liver tissue of T2DM rats. Lip-BBR also activated the GLP-1 expression, which stimulated insulin biosynthesis. It decreased the endoplasmic reticulum stress by limiting the CHOP, JNK expression, oxidative stress, and inflammation. Collectively, Lip-BBR ameliorated diabetic liver injury in a T2DM rat model with its promotion activity of AMPK/mTOR-mediated autophagy and limiting ER stress.
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Affiliation(s)
- Safaa I Khater
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Taghreed N Almanaa
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Doaa M Abdel Fattah
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Tarek Khamis
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
- Laboratory of Biotechnology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Mona M Seif
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Naief Dahran
- Department of Anatomy, Faculty of Medicine, University of Jeddah, Jeddah 80203, Saudi Arabia
| | - Leena S Alqahtani
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah 80203, Saudi Arabia
| | - Mohamed M M Metwally
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Mahmoud Mostafa
- Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Raghad A Albedair
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Azza I Helal
- Department of Histology and Cell Biology, Faculty of Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Manal Alosaimi
- Department of Basic Medical Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Amany Abdel-Rahman Mohamed
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
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18
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Li L, Yang M, Pu X, Tang Y, Fei F, Li Z, Hou H, Chen Q, Wang Q, Wu Y, Zhang Y, Ren C, Gong A. ALKBH5-PYCR2 Positive Feedback Loop Promotes Proneural-Mesenchymal Transition Via Proline Synthesis In GBM. J Cancer 2023; 14:1579-1591. [PMID: 37325047 PMCID: PMC10266253 DOI: 10.7150/jca.84213] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 04/19/2023] [Indexed: 06/17/2023] Open
Abstract
AlkB homolog 5, RNA demethylase (ALKBH5) is abnormally highly expressed in glioblastoma multiforme (GBM) and is negatively correlated with overall survival in GBM patients. In this study, we found a new mechanism that ALKBH5 and pyrroline-5-carboxylate reductase 2 (PYCR2) formed a positive feedback loop involved in proline synthesis in GBM. ALKBH5 promoted PYCR2 expression and PYCR2-mediated proline synthesis; while PYCR2 promoted ALKBH5 expression through the AMPK/mTOR pathway in GBM cells. In addition, ALKBH5 and PYCR2 promoted GBM cell proliferation, migration, and invasion, as well as proneural-mesenchymal transition (PMT). Furthermore, proline rescued AMPK/mTOR activation and PMT after silencing PYCR2 expression. Our findings reveal an ALKBH5-PYCR2 axis linked to proline metabolism, which plays an important role in promoting PMT in GBM cells and may be a promising therapeutic pathway for GBM.
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Affiliation(s)
- Li Li
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Mengting Yang
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Xufeng Pu
- Department of Medical Imaging, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Yu Tang
- Department of Pathology, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Fei Fei
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Zhangzuo Li
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Hanjin Hou
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Qian Chen
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Qiaowei Wang
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Yuqing Wu
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Ying Zhang
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Caifang Ren
- Department of Pathology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
| | - Aihua Gong
- Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, Jiang Su Province, China
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Zhang X, Ren X, Sun W, Griffin N, Wang L, Liu H. PFOA exposure induces aberrant glucose and lipid metabolism in the rat liver through the AMPK/mTOR pathway. Toxicology 2023; 493:153551. [PMID: 37236338 DOI: 10.1016/j.tox.2023.153551] [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: 02/13/2023] [Revised: 05/05/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023]
Abstract
Perfluorooctanoic acid (PFOA) is the most prominent member of a widely utilized family of compounds named Perfluoroalkyl substances (PFASs). Initially produced for use in both industrial and consumer applications, it has since been recognized that PFASs are extremely persistent in the environment where they have been characterized as persistent organic pollutants (POPs). While previous studies have demonstrated that PFOA may induce disorders of lipid and carbohydrate metabolism, the precise mechanisms by which PFOA produces this phenotype and the involvement of downstream AMPK/mTOR pathways remains unclear. In this study, male rats were exposed to 1.25, 5 and 20mg PFOA/kg body weight/day for 28 days by oral gavage. After 28 days, blood was collected and tested for serum biochemical indicators and livers were removed and weighed. To investigate aberrant metabolism in rats exposed to PFOA, livers were analyzed by performing LC-MS/MS untargeted metabolomics, quantitative real-time PCR, western blotting, immunohistochemical staining was also performed on exposed tissues. Our results showed that exposure to PFOA induced liver damage, increased the expression of glucose and lipid related biochemical indexes in liver and serum, and altered the expression levels of AMPK/mTOR pathway related genes and proteins. In summary, this study clarifies the mechanisms responsible for PFOA toxicity in the liver of exposed animals.
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Affiliation(s)
- Xuemin Zhang
- Department of Biochemistry and Molecular Biology, School of Laboratory Medicine; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu 233030, PR China; Bengbu Medical College Key Laboratory of Cancer Research and Clinical Laboratory Diagnosis, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, PR China
| | - Xijuan Ren
- School of Public Health, Bengbu Medical College, Bengbu 233030, PR China
| | - Weiqiang Sun
- Department of Biochemistry and Molecular Biology, School of Laboratory Medicine; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu 233030, PR China; Bengbu Medical College Key Laboratory of Cancer Research and Clinical Laboratory Diagnosis, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, PR China
| | - Nathan Griffin
- Department of Cell and Tissue Biology, University of California, San Francisco, CA, USA
| | - Li Wang
- School of Public Health, Bengbu Medical College, Bengbu 233030, PR China.
| | - Hui Liu
- Department of Biochemistry and Molecular Biology, School of Laboratory Medicine; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical College, Bengbu 233030, PR China; Bengbu Medical College Key Laboratory of Cancer Research and Clinical Laboratory Diagnosis, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, PR China.
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20
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Jhun J, Moon J, Kwon JY, Cho KH, Lee SY, Na HS, Cho ML, Min JK. Small heterodimer partner interacting leucine zipper protein (SMILE) ameliorates autoimmune arthritis via AMPK signaling pathway and the regulation of B cell activation. Cell Commun Signal 2023; 21:98. [PMID: 37143079 PMCID: PMC10161652 DOI: 10.1186/s12964-023-01054-y] [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: 09/25/2022] [Accepted: 01/16/2023] [Indexed: 05/06/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease that causes joint swelling and inflammation and can involve the entire body. RA is characterized by the increase of pro-inflammatory cytokines such as interleukin (IL) and tumor necrosis factor, and the over-activation of T lymphocytes and B lymphocytes, which may lead to severe chronic inflammation of joints. However, despite numerous studies the pathogenesis and treatment of RA remain unresolved. This study investigated the use of small heterodimer partner-interacting leucine zipper protein (SMILE) overexpression to treat a mouse model of RA. SMILE is an insulin-inducible corepressor through adenosine monophosphate-activated kinase (AMPK) signaling pathway. The injection of a SMILE overexpression vector to mice with collagen induced-arthritis resulted in a milder clinical pathology and a reduced incidence of arthritis, less joint tissue damage, and lower levels of Th17 cells and plasma B cells in the spleen. Immunohistochemistry of the joint tissue showed that SMILE decreased B-cell activating factor (BAFF) receptor (BAFF-R), mTOR, and STAT3 expression but increased AMPK expression. In SMILE-overexpressing transgenic mice with collagen antibody-induced arthritis (CAIA), a decrease in the arthritis score and reductions in tissue damage, the number of B cells, and antibody production were observed. The treatment of immune cells in vitro with curcumin, a known SMILE-inducing agent, led to decreases in plasma B cells, germinal center B cells, IL-17-producing B cells, and BAFF-R-positive B cells. Taken together, our findings demonstrate the therapeutic potential of SMILE in RA, based on its inhibition of B cell activation mediated by the AMPK/mTOR and STAT3 signaling pathway and BAFF-R expression. Video abstract.
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Affiliation(s)
- JooYeon Jhun
- Rheumatism Research Center, College of Medicine, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, 06591, Korea
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea
- Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-Daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Jeonghyeon Moon
- Departments of Neurology and Immunobiology, Yale School of Medicine, New Haven, 06511, CT, USA
| | - Ji Ye Kwon
- Rheumatism Research Center, College of Medicine, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, 06591, Korea
| | - Keun-Hyung Cho
- Rheumatism Research Center, College of Medicine, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, 06591, Korea
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea
- Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-Daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Seang Yoon Lee
- Rheumatism Research Center, College of Medicine, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, 06591, Korea
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea
- Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-Daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Hyun Sik Na
- Rheumatism Research Center, College of Medicine, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, 06591, Korea
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea
- Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-Daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Mi-La Cho
- Rheumatism Research Center, College of Medicine, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, 06591, Korea.
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Korea.
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.
| | - Jun-Ki Min
- Department of Internal Medicine, The Clinical Medicine Research Institute of Bucheon St. Mary's Hospital, Bucheon-si, South Korea.
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21
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Xu Q, Wu H, Zhu H, Lu C, Tao J, Zhou Z, Zhang J. Grain-sized moxibustion at Zusanli (ST36) promotes hepatic autophagy in rats with hyperlipidemia by regulating the ULK1 and TFEB expression through the AMPK/mTOR signaling pathway. Heliyon 2023; 9:e15316. [PMID: 37144182 PMCID: PMC10151263 DOI: 10.1016/j.heliyon.2023.e15316] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 05/06/2023] Open
Abstract
Objective Grain-sized moxibustion is an effective treatment for hyperlipidemia, but how it regulates dyslipidemia and liver lipid deposits still needs to be fully understood. This study explored the molecular biological mechanism of grain-sized moxibustion to regulate hepatic autophagy in hyperlipidemic rats by affecting ULK1 and TFEB through the AMPK/mTOR signaling pathway. Methods Thirty male Sprague-Dawley (SD) rats were fed a high-fat diet for eight weeks to induce hyperlipidemia. Hyperlipidemic rats were divided into the HFD group, HFD + Statin group, HFD + CC + Moxi group, and grain-sized moxibustion intervention group (HFD + Moxi group). The control (Blank) group consisted of normal rats without any intervention. Grain-sized moxibustion and drug interventions were initiated eight weeks after high-fat diet induction and continued for ten weeks. Serum total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), and high-density lipoprotein (HDL), as well as hepatic triglyceride (TG), were measured after treatment. Hepatic steatosis and the expression of LC3I, LC3II, p62, p-AMPK, AMPK, p-mTOR, mTOR, ULK1, p-ULK1, and TFEB in the liver were analyzed. Results Compared with the HFD group, grain-sized moxibustion improved hyperlipidemia and hepatocyte steatosis, increased the LC3, p-AMPK, p-ULK1, and nuclear TFEB expression in the liver, but decreased the p62 and p-mTOR expression. Conclusion Grain-sized moxibustion at ST36 acupoints could regulate the blood lipid level of SD rats with hyperlipidemia, increase the expression level of ULK1 and TFEB by activating the AMPK/mTOR signaling pathway in liver tissues, and initiate the transcription of autophagy genes such as LC3.
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Affiliation(s)
- Qian Xu
- Jiangsu Second Hospital of Chinese Medicine, China
- The Second Clinical Medical College/the Second Affiliated Hospital of Nanjing University of Chinese Medicine, China
| | - Huanxi Wu
- Jiangsu Second Hospital of Chinese Medicine, China
- The Second Clinical Medical College/the Second Affiliated Hospital of Nanjing University of Chinese Medicine, China
| | - Haibin Zhu
- Jiangsu Second Hospital of Chinese Medicine, China
- The Second Clinical Medical College/the Second Affiliated Hospital of Nanjing University of Chinese Medicine, China
| | - Chengxuan Lu
- College of Acupuncture and Tuina, Nanjing University of Chinese Medicine, China
| | - Jiangjia Tao
- Jiangsu Second Hospital of Chinese Medicine, China
- The Second Clinical Medical College/the Second Affiliated Hospital of Nanjing University of Chinese Medicine, China
| | - Ziqiu Zhou
- Jiangsu Second Hospital of Chinese Medicine, China
- The Second Clinical Medical College/the Second Affiliated Hospital of Nanjing University of Chinese Medicine, China
| | - Jianbin Zhang
- Jiangsu Second Hospital of Chinese Medicine, China
- The Second Clinical Medical College/the Second Affiliated Hospital of Nanjing University of Chinese Medicine, China
- Corresponding author.Jiangsu Second Hospital of Chinese Medicine, China
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22
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Li X, Zhang H, Yang L, Dong X, Han Y, Su Y, Li W, Li W. Inhibition of NLRP1 inflammasome improves autophagy dysfunction and Aβ disposition in APP/PS1 mice. Behav Brain Funct 2023; 19:7. [PMID: 37055801 PMCID: PMC10100229 DOI: 10.1186/s12993-023-00209-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/07/2023] [Indexed: 04/15/2023]
Abstract
Increasing evidence has shown that the NOD-like receptor protein 1 (NLRP1) inflammasome is associated with Aβ generation and deposition, which contributes to neuronal damage and neuronal-inflammation in Alzheimer's disease (AD). However, the specific mechanism of NLRP1 inflammasome in the pathogenesis of AD is still unclear. It has been reported that autophagy dysfunction can aggravate the pathological symptoms of AD and plays an important role in regulating Aβ generation and clearance. We hypothesized that NLRP1 inflammasome activation may induce autophagy dysfunction contributing to the progression of AD. In the present study, we observed the relationship between Aβ generation and NLRP1 inflammasome activation, as well as AMPK/mTOR mediated-autophagy dysfunction in WT 9-month-old (M) mice, APP/PS1 6 M and APP/PS1 9 M mice. Additionally, we further studied the effect of NLRP1 knockdown on cognitive function, Aβ generation, neuroinflammation and AMPK/mTOR mediated autophagy in APP/PS1 9 M mice. Our results indicated that NLRP1 inflammasome activation and AMPK/mTOR mediated-autophagy dysfunction are closely implicated in Aβ generation and deposition in APP/PS1 9 M mice, but not in APP/PS1 6 M mice. Meanwhile, we found that knockdown of NLRP1 significantly improved learning and memory impairments, decreased the expressions of NLRP1, ASC, caspase-1, p-NF-κB, IL-1β, APP, CTF-β, BACE1 and Aβ1-42, and decreased the level of p-AMPK, Beclin 1 and LC3 II, and increased the level of p-mTOR and P62 in APP/PS1 9 M mice. Our study suggested that inhibition of NLRP1 inflammasome activation improves AMPK/mTOR mediated-autophagy dysfunction, resulting in the decrease of Aβ generation, and NLRP1 and autophagy might be important targets to delay the progression of AD.
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Affiliation(s)
- Xuewang Li
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China
| | - Han Zhang
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China
| | - Liu Yang
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China
| | - Xianan Dong
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China
| | - Yuli Han
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China
| | - Yong Su
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, Anhui, China
| | - Weiping Li
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China.
- Anqing Medical and Pharmaceutical College, Anqing, 246052, Anhui, China.
| | - Weizu Li
- Department of Pharmacology, Basic Medicine College, Key Laboratory of Anti-Inflammatory and Immunopharmacology, Ministry of Education, Anhui Medical University, Hefei, 230032, China.
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23
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Ni X, Shang FS, Wang TF, Wu DJ, Chen DG, Zhuang B. Ellagic acid induces apoptosis and autophagy in colon cancer through the AMPK/mTOR pathway. Tissue Cell 2023; 81:102032. [PMID: 36701898 DOI: 10.1016/j.tice.2023.102032] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [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: 08/13/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 01/23/2023]
Abstract
Ellagic acid (EA), found in fruits and foods, has been shown to be effective in the treatment of breast, colon and bladder cancer. However, due to the complexity of colon cancer, the therapeutic mechanism of EA for colon cancer is still unclear. Cell Counting Kit-8 (CCK-8) assay were employed to investigate the cell proliferation. Western blotting and flow cytometry assays were utilized to investigate apoptosis and autophagy in CRC cells (HCT116), respectively. Moreover, western blotting and luciferase reporter assays were evaluated the effect of EA on AMPK/mTOR pathway. Through flow cytometry analysis, EA could promote the apoptosis of HCT116 cells. In addition, EA can reduce the phosphorylation of mTOR, promoted phosphorylation of AMPK, and induced autophagy in HCT116 cells. Also, Dorsomorphin pretreatment can reduce the expression of autophagy protein, which indicates that EA induces autophagy through AMPK/mTOR pathway. These results suggest that EA inhibits the growth of colon cancer through AMPK/mTOR pathway and induces apoptosis and protective autophagy.
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Affiliation(s)
- Xiong Ni
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Fu-Sheng Shang
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Ting-Feng Wang
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - De-Jun Wu
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Da-Gui Chen
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China.
| | - Biao Zhuang
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China.
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24
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Zhang D, Zhang Y, Wang Z, Lei L. Thymoquinone attenuates hepatic lipid accumulation by inducing autophagy via AMPK/mTOR/ULK1-dependent pathway in nonalcoholic fatty liver disease. Phytother Res 2023; 37:781-797. [PMID: 36479746 DOI: 10.1002/ptr.7662] [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: 05/08/2022] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 12/12/2022]
Abstract
Thymoquinone (TQ) has been proved to exert wide-ranging pharmacological activities, with anti-inflammatory, antioxidant, anticonvulsant, antimicrobial, anti-tumor, and antidiabetic properties. In this study, we investigated the beneficial effects of TQ on a high-fat diet (HFD)-induced nonalcoholic fatty liver disease (NAFLD) in C57BL/6 N mice in vivo and free fatty acid (FFA)-induced human hepatocellular carcinoma HepG2 cells in vitro. Further, the underlying mechanisms of TQ to promote hepatic autophagy were also discovered. Data showed that TQ caused (p < 0.01) body weight reduction, improved glucose homeostasis, alleviated hepatosteatosis, and decreased hepatic lipid accumulation related to the induction of autophagy in HFD-fed mice. In vitro, TQ obviously increased (p < 0.01) autophagic flux in FFA-induced HepG2 cells and consequently reduced the lipid accumulation in combination with activation of AMPK/mTOR/ULK1 signaling pathways. Moreover, pharmacological inhibition of the AMPK pathway by addition with AMPK inhibitor Compound C (CC) or silence of ULK1 by transfection with siRNA(ULK1) into HepG2 cells reversed these beneficial effects of TQ on triggering hepatic autophagy and reducing lipid accumulation (p < 0.01). Taken together, these results suggested that TQ alleviated hepatic lipid accumulation by triggering autophagy through the AMPK/mTOR/ULK1-dependent signaling pathway. Our study supports a potential role for TQ in ameliorating NAFLD.
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Affiliation(s)
- Di Zhang
- Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Yinghui Zhang
- Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Zhilan Wang
- Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Lei Lei
- Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
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Yang X, Zhao X, Liu Y, Liu Y, Liu L, An Z, Xing H, Tian J, Song X. Ginkgo biloba extract protects against diabetic cardiomyopathy by restoring autophagy via adenosine monophosphate-activated protein kinase/mammalian target of the rapamycin pathway modulation. Phytother Res 2023; 37:1377-1390. [PMID: 36751963 DOI: 10.1002/ptr.7746] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/11/2023] [Accepted: 01/22/2023] [Indexed: 02/09/2023]
Abstract
Studies demonstrated that Ginkgo biloba extract (GBE) played a cardioprotective role in diabetic conditions. Impaired autophagy is one of the mechanisms underlying diabetic cardiomyopathy (DCM). The effect of GBE on autophagy has been observed in several diseases; however, whether GBE can ameliorate DCM by regulating autophagy remains unclear. Here, we investigated the effect of GBE on DCM and the potential mechanisms regarding autophagy using a streptozotocin (STZ)-induced diabetic rat model and a high-glucose (HG)-stimulated H9C2 cell model. We demonstrated that GBE attenuated metabolic disturbances, improved cardiac function, and reduced myocardial pathological changes in diabetic rats. Impaired autophagy as well as dysregulation of the adenosine monophosphate-activated protein kinase/ mammalian target of the rapamycin (AMPK/mTOR) signaling pathway were observed in diabetic hearts, as evidenced by the reduced conversion of LC3B-I to LC3B-II along with excessive p62 accumulation, decreased AMPK phosphorylation, and increased mTOR phosphorylation, which could be reversed by GBE treatment. In vitro, GBE reduced the apoptosis induced by HG in H9C2 cells by activating AMPK and inhibiting mTOR to restore autophagy. However, this effect was inhibited by the AMPK inhibitor Compound C. In conclusion, the ameliorative effect of GBE on DCM might be dependent on the restoration of autophagy through modulation of the AMPK/mTOR pathway.
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Affiliation(s)
- Xueyao Yang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
| | - Xin Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
| | - Yanfei Liu
- Cardiovascular Disease Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
| | - Yue Liu
- Cardiovascular Disease Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
| | - Libo Liu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
| | - Ziyu An
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
| | - Haoran Xing
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
| | - Jinfan Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
| | - Xiantao Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, People's Republic of China
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Tian Y, Ullah H, Gu J, Li K. Immune-metabolic mechanisms of post-traumatic stress disorder and atherosclerosis. Front Physiol 2023; 14:1123692. [PMID: 36846337 PMCID: PMC9944953 DOI: 10.3389/fphys.2023.1123692] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/30/2023] [Indexed: 02/10/2023] Open
Abstract
The interaction of post-traumatic stress disorder (PTSD) and atherosclerosis (AS) increase the risk of mortality. Metabolism and immunity play important roles in the comorbidity associated with PTSD and AS. The adenosine monophosphate-activated protein kinase/mammalian target of rapamycin and phosphatidylinositol 3-kinase/Akt pathways are attractive research topics in the fields of metabolism, immunity, and autophagy. They may be effective intervention targets in the prevention and treatment of PTSD comorbidity with AS. Herein, we comprehensively review metabolic factors, including glutamate and lipid alterations, in PTSD comorbidity with AS and discuss the possible implications in the pathophysiology of the diseases.
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Affiliation(s)
- Yali Tian
- West China School of Nursing/West China Hospital, Sichuan University, Chengdu, China
| | - Hanif Ullah
- West China School of Nursing/West China Hospital, Sichuan University, Chengdu, China
| | - Jun Gu
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Ka Li
- West China School of Nursing/West China Hospital, Sichuan University, Chengdu, China,*Correspondence: Ka Li,
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Peng Q, Chen X, Liang X, Ouyang J, Wang Q, Ren S, Xie H, Wang C, Sun Y, Wu X, Liu H, Hei C, Sun M, Chang Q, Liu X, Li G, He R. Metformin improves polycystic ovary syndrome in mice by inhibiting ovarian ferroptosis. Front Endocrinol (Lausanne) 2023; 14:1070264. [PMID: 36755918 PMCID: PMC9900736 DOI: 10.3389/fendo.2023.1070264] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 01/04/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND AND OBJECTIVE PCOS is a common metabolic disorder in women of reproductive age, which pathogenesis is very complex. The role of ferroptosis in PCOS is a novel finding, and the mechanistic studies are not clear. Metformin is a commonly used drug of PCOS but few studies on whether metformin can improve the follicle development and ovarian function in PCOS. We aims to use PCOS mouse model to study the effect of metformin on PCOS based on the ovarian function and explored the regulation of metformin in PCOS mice by intervening in ferroptosis pathway. MATERIALS AND METHODS C57 BL/6J female mice aged 4-5 weeks were purchased and gavaged with letrozole (1 mg/kg/day) combined with high-fat diet for 21days to establish PCOS model, and control group was set up. After modeling, the mice were divided into PCOS model group and metformin treatment group (Met) (n=6).The Met group were gavaged metformin (200 mg/kg/day) for 28 days. The body weight, estrous cycle, glucose tolerance test (OGTT)and insulin resistance test (ITT) were monitored. Then, The mice were euthanized to collect serum and ovaries. Elisa was used to detect changes in related serum hormones (E2, LH, FSH, TP). Ovaries used for molecular biology experiments to detect changes in GPX4, SIRT3, AMPK/p-AMPK, and mTOR/p-mTOR by Western blot and qPCR. RESULTS Compared with the model group mice, body weight was significantly reduced, and their estrous cycle was restored in Met group. The results of OGTT and ITT showed an improvment of glucose tolerance and insulin resistance. Morphological results showed that after metformin treatment, polycystic lesions in ovaries were reduced, the ovarian function was restored, and the expressions of SIRT3 and GPX4 were elevated. WB results demonstrated that the expressions of p-mTOR and p-AMPK in ovaries were significantly reduced in Model group, but reversed in MET group. CONCLUSION Our study confirmed metformin could not only improve body weight and metabolism disorders, but also improve ovarian dysfunction in PCOS mice.In addition, we explored metformin could regulate ferroptosis to improve PCOS via the SIRT3/AMPK/mTOR pathway. Our study complements the mechanisms by which metformin improves PCOS.
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Affiliation(s)
- Qingjie Peng
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiaojiang Chen
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xiaoxia Liang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Jiahui Ouyang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Qiangqiang Wang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Shuai Ren
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Haibo Xie
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Chunhong Wang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Yaqun Sun
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xin Wu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Hetao Liu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Changchun Hei
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Miao Sun
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Qing Chang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Xinrui Liu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Guangyong Li
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
- The General Hospital of Ningxia Medical University, Ningxia Medical University, Yinchuan, China
- *Correspondence: Rui He, ; Guangyong Li,
| | - Rui He
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
- *Correspondence: Rui He, ; Guangyong Li,
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Liu Q, Zhang L, Zou Y, Tao Y, Wang B, Li B, Liu R, Wang B, Ding L, Cui Q, Lin J, Mao B, Xiong W, Yu M. Modulating p- AMPK/mTOR Pathway of Mitochondrial Dysfunction Caused by MTERF1 Abnormal Expression in Colorectal Cancer Cells. Int J Mol Sci 2022; 23. [PMID: 36293209 DOI: 10.3390/ijms232012354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/30/2022] Open
Abstract
Human mitochondrial transcription termination factor 1 (MTERF1) has been demonstrated to play an important role in mitochondrial gene expression regulation. However, the molecular mechanism of MTERF1 in colorectal cancer (CRC) remains largely unknown. Here, we found that MTERF1 expression was significantly increased in colon cancer tissues compared with normal colorectal tissue by Western blotting, immunohistochemistry, and tissue microarrays (TMA). Overexpression of MTERF1 in the HT29 cell promoted cell proliferation, migration, invasion, and xenograft tumor formation, whereas knockdown of MTERF1 in HCT116 cells appeared to be the opposite phenotype to HT29 cells. Furthermore, MTERF1 can increase mitochondrial DNA (mtDNA) replication, transcription, and protein synthesis in colorectal cancer cells; increase ATP levels, the mitochondrial crista density, mitochondrial membrane potential, and oxygen consumption rate (OCR); and reduce the ROS production in colorectal cancer cells, thereby enhancing mitochondrial oxidative phosphorylation (OXPHOS) activity. Mechanistically, we revealed that MTERF1 regulates the AMPK/mTOR signaling pathway in cancerous cell lines, and we also confirmed the involvement of the AMPK/mTOR signaling pathway in both xenograft tumor tissues and colorectal cancer tissues. In summary, our data reveal an oncogenic role of MTERF1 in CRC progression, indicating that MTERF1 may represent a new therapeutic target in the future.
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Que T, Ren B, Fan Y, Liu T, Hou T, Dan W, Liu B, Wei Y, Lei Y, Zeng J, Li L. Capsaicin inhibits the migration, invasion and EMT of renal cancer cells by inducing AMPK/mTOR-mediated autophagy. Chem Biol Interact 2022; 366:110043. [PMID: 36044967 DOI: 10.1016/j.cbi.2022.110043] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 04/01/2022] [Revised: 06/10/2022] [Accepted: 07/13/2022] [Indexed: 12/01/2022]
Abstract
Capsaicin (CAP), extracted from Capsicum fruits, has been reported to exhibit antitumor effects in various lines of cancer cells. However, the mechanism underlying its antitumor efficiency is not fully understood. Autophagy is a fundamental self-degradation process of cells that maintains homeostasis and plays a controversial role in tumor initiation and progression. The EMT is defined as a system regulating cells transformed from an epithelial-like phenotype into a mesenchymal phenotype by several internal and external factors, following the metastatic performance of the cells developed. The present study aimed to investigate the potential role of autophagy in CAP-induced antitumor effects in renal cell carcinoma (RCC) 786-O and CAKI-1 cell lines. The results revealed that CAP remarkably inhibited the migration and invasion of RCC cells in vitro and metastasis in vivo. Moreover, we found that the CAP treatment increased the formation of autophagolysosome vacuoles and LC3 yellow and red fluorescent puncta in RCC cells and upregulated the expression of LC3, suggesting that autophagy was induced by CAP in 786-O and CAKI-1 cell lines. Our further results demonstrated that CAP-induced autophagy was mediated by the AMPK/mTOR pathway. In conclusion, our study provides new knowledge of the potential relationship between autophagy and metastasis inhibition induced by CAP, which might be a promising therapeutic strategy in RCC.
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Affiliation(s)
- Taotao Que
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Bingyi Ren
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Yizeng Fan
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Tianjie Liu
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Tao Hou
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Weichao Dan
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Bo Liu
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Yi Wei
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Yuzeshi Lei
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China
| | - Jin Zeng
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China.
| | - Lei Li
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, PR China.
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Lin GS, Zhao MM, Fu QC, Zhao SY, Ba TT, Yu HX. Palmatine attenuates hepatocyte injury by promoting autophagy via the AMPK/mTOR pathway after alcoholic liver disease. Drug Dev Res 2022; 83:1613-1622. [PMID: 35976121 DOI: 10.1002/ddr.21981] [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: 03/28/2022] [Revised: 06/23/2022] [Accepted: 07/16/2022] [Indexed: 11/08/2022]
Abstract
Alcoholic liver disease is one of the diseases with the highest fatality rate worldwide. The cellular process of autophagy which recycles damaged organelles to maintain protein and organelle homeostasis is found to positively influence survival during hepatic insufficiency, although the mechanism is poorly understood. Palmatine (PLT) has a variety of biological functions, such as broad-spectrum antibacterial action, neuroprotective, antioxidant stress, and antiviral and anti-inflammatory activities. However, it is not known whether PLT has a protective effect against alcoholic liver injury. Here, we investigated the protective effect of PLT in a cellular model of alcohol-induced acute liver injury and further explored its mechanism of action. In this study, we show for the first time that PLT attenuates alcohol-induced hepatocyte injury by promoting autophagy to play an essential protective role. As PLT treatment induced a brief increase in LC3-II conversion and p62 degradation, it also upregulated the expression of ATG5 and ATG7. The expression levels of the proapoptotic proteins Bax, Caspase 3, and Caspase 9 significantly decreased, while the antiapoptotic protein levels of Bcl-2 upregulated after treatment with PLT. However, in presence of the autophagy inhibitor, 3-methyladenine, the effect of PLT in inhibiting ethanol-induced hepatocyte injury reversed significantly. Mechanistically, the protective effects of PLT may be mediated by promoting the activation of the AMP-activated protein kinase/mammalian target of rapamycin signaling pathway. Therefore, we believe that the development of alcoholic liver injuries may be controlled by PLT by inhibiting hepatocyte apoptosis through the autophagy pathway. The study lays a solid theoretical and practical basis for future animal models and clinical studies of PLT.
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Affiliation(s)
- Guo-Shuai Lin
- Department of Infectious Disease, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Mao-Mao Zhao
- Department of Infectious Disease, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Qi-Chao Fu
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Shu-Yi Zhao
- Department of Oncology, Yantai Hospital of Traditional Chinese Medicine, Yantai, Shandong, China
| | - Tao-Tao Ba
- Department of Infectious Disease, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Hong-Xia Yu
- Department of Infectious Disease, Yantai Yuhuangding Hospital, Yantai, Shandong, China
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Liu Y, Xiang H, Xiong W, Ouyang J, Liu H, Zhao S, Xiao J, Li J, Shu Z, Wang X, Liu H, Zhang J, Fan J, Li Y, Chen S, Lu H. Glucolipotoxicity induces endothelial cell dysfunction by activating autophagy and inhibiting autophagic flow. Diab Vasc Dis Res 2022; 19:14791641221102513. [PMID: 35549572 PMCID: PMC9125420 DOI: 10.1177/14791641221102513] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES This study aims to determine the role and mechanism of autophagy in endothelial cell dysfunction by glucolipotoxicity. METHODS Human umbilical vein endothelial cells (HUVECs) were treated with high glucose and high palmitic acid. The number of autophagosomes was evaluated by monodansylcadaverine (MDC) staining and transmission electron microscopy (TEM). The expression of autophagy-related proteins (LC3 and P62) was assessed by Western blotting. Capillary tube-like formation was evaluated on Matrigel. Reactive oxygen species (ROS) production was detected by DCFH-DA. Cell apoptosis was measured by Hoechst 33258 staining and flow cytometry. Phosphorylation of AMPK, mTOR, and ULK1 was also analyzed by Western blotting. RESULTS We found that glucolipotoxicity induced autophagy initiation and hindered autophagosomes degradation. Moreover, glucolipotoxicity increased the production of intracellular ROS, decreased the ability of tubular formation, and increased cell apoptosis. However, endothelial cell dysfunction was alleviated by 3-methyladenine, an early-stage autophagy inhibitor. Additionally, glucolipotoxicity promoted the phosphorylation of AMPK and ULK1 and inhibited the phosphorylation of mTOR. CONCLUSIONS Glucolipotoxicity initiates autophagy through the AMPK/mTOR/ULK1 signaling pathway and inhibits autophagic flow, leading to the accumulation of autophagosomes, thereby inducing apoptosis and impairing endothelial cell function.
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Affiliation(s)
- Yulan Liu
- Health Management Center, Third Xiangya Hospital of Central
South University, Changsha, China
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Hong Xiang
- Center for Experimental Medicine, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Wenfang Xiong
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Jie Ouyang
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Hengdao Liu
- Department of Cardiology, The First Affiliated Hospital of
Zhengzhou University, Zhenzhou, China
| | - Shaoli Zhao
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Jie Xiao
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Jialing Li
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Zhihao Shu
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Xuewen Wang
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Huiqin Liu
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Jing Zhang
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Jianing Fan
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Ying Li
- Department of Cardiology, Third Xiangya Hospital of Central
South University, Changsha, China
| | - Shuhua Chen
- Departments of Biochemistry, School
of Life Sciences, Central South
University, Changsha, China
- Shuhua Chen, Department of Biochemistry,
School of Life Sciences, Central South University, 172 Tongzipo Road, Changsha
410013, China.
| | - Hongwei Lu
- Health Management Center, Third Xiangya Hospital of Central
South University, Changsha, China
- Center for Experimental Medicine, Third Xiangya Hospital of Central
South University, Changsha, China
- Hongwei Lu, Center for Experimental
Medicine, Third Xiangya Hospital of Central South University, 138 Tongzipo Road,
Changsha 410013, China.
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Ding R, Jiang Y, Yang Y, Shi Y, Ji Y, Zhen T, Fu Z, Bao X, Tan J, Zhang S, Li J, Xing K, Zhou X, Zhu S. Calcitriol ameliorates renal injury with high-salt diet-induced hypertension by upregulating GLIS2 expression and AMPK/mTOR-regulated autophagy. Gene 2022; 820:146239. [PMID: 35114278 DOI: 10.1016/j.gene.2022.146239] [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: 08/14/2021] [Revised: 11/03/2021] [Accepted: 01/18/2022] [Indexed: 11/24/2022]
Abstract
The goal of the present study was to investigate the protective effect of calcitriol on high-salt diet-induced hypertension. The hypertension rat model was established by a long-term high-salt diet (8% NaCl). Rats were treated with calcitriol, losartan, or their combination. Histological staining was used to confirm renal pathology. Global transcriptome analysis of renal tissues was performed, and the mechanism of the therapeutic effect of calcitriol was analysed by functional annotation and pathway analysis of the differentially expressed genes (DEGs) as well as by Western blotting analysis. The core genes for potential therapeutic regulation were identified through the coexpression gene network. For in vitro HK-2 cell experiments, small interfering RNA (siRNA) was used to knockdown key a transcription factor (TF) Glis2 to validate the therapeutic target of calcitriol. MAPK1 and CXCL12 expression was downregulated and the apoptosis pathway was significantly enriched by calcitriol treatment. The western blotting results showed that calcitriol treatment increased AMPK phosphorylation and decreased downstream mTOR phosphorylation, which was accompanied by a decrease in autophagy protein p62 expression and an increase in LC3-II/I expression. GLIS2 was identified as a specific therapeutic target for calcitriol. GLIS2 expression was upregulated by calcitriol and confirmed by HK-2 cells in vitro. Our omics data show that calcitriol can alleviate oxidative stress and fibrosis. Moreover, calcitriol can regulate the CXCL12/ERK1/2 cascade to inhibit the inflammatory response and renal cell apoptosis and induce renal autophagy through the AMPK/mTOR pathway. Our study partially elucidate the pathogenesis and treatment mechanism underlying hypertension, and provide new insights into the treatment of hypertension.
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Affiliation(s)
- Ruifeng Ding
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yufeng Jiang
- Department of Nephrology, Shuguang Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200021, China; Key Laboratory of Liver and Kidney Diseases (Shanghai University of Traditional Chinese Medicine), Ministry of Education, Shanghai, China
| | - Yi Yang
- Cinoasia Institute, Shanghai 200438, China
| | - Yong Shi
- Cinoasia Institute, Shanghai 200438, China
| | - Yang Ji
- Cinoasia Institute, Shanghai 200438, China
| | | | | | - Xunxia Bao
- Cinoasia Institute, Shanghai 200438, China
| | - Jia Tan
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shuyong Zhang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jiahui Li
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | | | - Xinli Zhou
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Sibo Zhu
- School of Life Sciences, Fudan University, Shanghai 200438, China.
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二氢杨梅素的体外护肝作用:基于脂噬介导的LO2细胞脂质蓄积及HepG2细胞增殖. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42. [PMID: 35527487 DOI: 10.12122/j.issn.1673-4254.2022.04.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To explore the mechanism underlying the hepatoprotective effect of dihydromyricetin (DMY) against lipid accumulation in light of the lipophagy pathway and the inhibitory effect of DMY on HepG2 cell proliferation. METHODS LO2 cells were cultured in the presence of 10% FBS for 24 h and treated with 100 μg/mL DMY, or exposed to 50% FBS for 24 h followed by treatment with 50, 100, or 200 μg/mL DMY; the cells in recovery group were cultured in 50% FBS for 24 h and then in 10% FBS for another 24 h. Oil red O staining was used to observe the accumulation of lipid droplets in the cells, and the levels of TC, TG, and LDL and activities of AST, ALT and LDH were measured. The expression of LC3 protein was detected using Western blotting. AO staining and transmission electron microscopy were used to determine the numbers of autophagolysosomes and autophagosomes, respectively. The formation of autophagosomes was observed with MDC staining, and the mRNA expression levels of LC3, ATG7, AMPK, mTOR, p62 and Beclin1 were determined with q-PCR. Flow cytometry was performed to analyze the effect of 50, 100, and 200 μg/mL DMY on cell cycle and apoptosis of HepG2 cells; DNA integrity in the treated cells was examined with cell DNA fragmentation test. RESULTS DMY treatment and pretreatment obviously inhibited lipid accumulation and reduced the levels of TC, TG, LDL and enzyme activities of AST, ALT and LDH in LO2 cells (P < 0.05). In routinely cultured LO2 cells, DMY significantly promoted the formation of autophagosomes and autophagolysosomes and upregulated the expression of LC3 protein. DMY obviously attenuated high FBS-induced inhibition of autophagosome formation in LO2 cells, up- regulated the mRNA levels of LC3, ATG7, Beclin1 and AMPK, and downregulated p62 and mTOR mRNA levels (P < 0.05 or 0.01). In HepG2 cells, DMY caused obvious cell cycle arrest, inhibited cell proliferation, and induced late apoptosis and DNA fragmentation. CONCLUSION DMY reduces lipid accumulation in LO2 cells by regulating the AMPK/ mTOR-mediated lipophagy pathway and inhibits the proliferation of HepG2 by causing cell cycle arrest and promoting apoptosis.
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Wu M, Cong Y, Wang K, Yu H, Zhang X, Ma M, Duan Z, Pei X. Bisphenol A impairs macrophages through inhibiting autophagy via AMPK/mTOR signaling pathway and inducing apoptosis. Ecotoxicol Environ Saf 2022; 234:113395. [PMID: 35298966 DOI: 10.1016/j.ecoenv.2022.113395] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/03/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
Bisphenol A (BPA) is a widespread endocrine disruptor that induces the impairment of immune cells, but the mechanism remains unknown. Macrophages are one of the most important immune cells in innate and adaptive immunity. In this study, we aimed to probe the effects of BPA on the damage of RAW264.7 cells and its mechanisms of action, especially focusing on the relationship between autophagy and apoptosis. Cells were pretreated with 10 mg/L LPS, or added autophagy activator RAPA, autophagy inhibitor 3-MA or Bcl-2 inhibitor ABT-737, then treated with BPA (0, 10, 100 and 200 μmol/L) for 12 h. Results have shown that BPA decreased the cell viability and disrupted secretory function by promoting pro-inflammatory cytokines TNF-α and IL-6 and reducing anti-inflammatory cytokines IL-10 TGF-β, as well as phagocytic ability. Moreover, autophagy was inhibited by BPA through decreasing p-AMPK/AMPK and increasing p-mTOR/mTOR, and further down-regulating autophagy proteins ATG6, LC3II/I ratio, and up-regulating autophagy flux protein p62. Additionally, BPA significantly increased Bax/Bcl-2 ratio, Caspase-3 expression and apoptosis rate. We found that RAPA ameliorated the cell viability, Bax/Bcl-2 ratio, and macrophage function damage induced by BPA. Intriguingly, ABT-737 might promote ATG6 expression. In summary, our study demonstrated that the effects of BPA on macrophages seemed to be mediated by inhibiting AMPK/mTOR-dependent autophagy and inducing apoptosis via endogenous mitochondrial pathway. Both Bcl-2 and ATG6 were involved in the regulation of apoptosis and autophagy by BPA. These findings provide a broader perspective for understanding the interaction between autophagy and apoptosis in BPA-induced immune cell injury.
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Affiliation(s)
- Mingfei Wu
- Shenyang Medical College, Shenyang 110034, China.
| | - Yan Cong
- Shenyang Medical College, Shenyang 110034, China.
| | - Kailu Wang
- Shenyang Medical College, Shenyang 110034, China.
| | - Haiyang Yu
- Shenyang Medical College, Shenyang 110034, China.
| | - Xuan Zhang
- Shenyang Medical College, Shenyang 110034, China.
| | - Mingyue Ma
- Shenyang Medical College, Shenyang 110034, China.
| | - Zhiwen Duan
- Shenyang Medical College, Shenyang 110034, China.
| | - Xiucong Pei
- Shenyang Medical College, Shenyang 110034, China.
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Xu H, Cheng J, He F. Cordycepin alleviates myocardial ischemia/reperfusion injury by enhancing autophagy via AMPK-mTOR pathway. J Physiol Biochem 2022; 78:401-413. [PMID: 35230668 DOI: 10.1007/s13105-021-00816-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 12/17/2020] [Accepted: 04/12/2021] [Indexed: 11/25/2022]
Abstract
To estimate the cardioprotective mechanism of cordycepin on myocardial ischemia/reperfusion (I/R) injury. The left anterior descending artery of mice was ligated transiently to establish the myocardial I/R model. TTC/Evans Blue staining and TUNEL assay were performed to quantify the infarct size and apoptosis index. The cardiac function was evaluated by echocardiography. Neonatal rat ventricular cardiomyocytes (NRVCs) underwent hypoxia and reoxygenation (H/R). MTS and LDH were detected to measured cell viability and necrosis respectively. The results suggested that cordycepin could markedly decrease apoptosis, reduce infarct size, and improve cardiac function in mice subjected to I/R injury, alongside with enhanced autophagy. In NRVCs, cordycepin treatment obviously reduced ROS production. In addition, cordycepin partly promoted autophagy in the context of H/R injury by regulating AMPK/mTOR pathway. Our data demonstrated that cordycepin exerts cardio-protective effect and promotes cardiac functional recovery following myocardial I/R by enhancing autophagy via AMPK-mTOR signaling pathway.
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Affiliation(s)
- Han Xu
- Department of Cardiology, second affiliated hospital of Anhui medical University, Hefei, Anhui, China.,Department of Geriatrics, Affiliated Huadong Hospital of Fudan University, Shanghai, China
| | - Jing Cheng
- School of Nursing, Anhui University of Traditional Chinese Medicine, No.103 of middle Meishan Road, Hefei, Anhui, China
| | - Fei He
- Department of Cardiology, second affiliated hospital of Anhui medical University, Hefei, Anhui, China.
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Li Y, Cheng Y, Zhou Y, Du H, Zhang C, Zhao Z, Chen Y, Zhou Z, Mei J, Wu W, Chen M. High fat diet-induced obesity leads to depressive and anxiety-like behaviors in mice via AMPK/mTOR-mediated autophagy. Exp Neurol 2021; 348:113949. [PMID: 34902357 DOI: 10.1016/j.expneurol.2021.113949] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [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: 07/07/2021] [Revised: 12/02/2021] [Accepted: 12/07/2021] [Indexed: 12/28/2022]
Abstract
Depression is one of the most common mental illnesses in modern society. In recent years, several studies show that there are disturbances in lipid metabolism in depressed patients. High-fat diet may lead to anxiety and depression, but the mechanisms involved remain unclear. In our study, we found that 8 weeks of high-fat feeding effectively induced metabolic disorders, including obesity and hyperlipidemia in mice. Interestingly, the mice also showed depressive and anxiety-like behaviors. We further found activated microglia and astrocyte, increased neuroinflammation, decreased autophagy and BDNF levels in mice after high-fat feeding. Besides, high-fat feeding can also inhibit AMPK phosphorylation and induce mTOR phosphorylation. After treating with the mTOR inhibitor rapamycin, autophagy and BDNF levels were elevated. The number of activated microglia and astrocyte, and pro-inflammation levels were reduced. Besides, rapamycin can also reduce the body weight and serum lipid level in high fat feeding mice. Depressive and anxiety-like behaviors were also ameliorated to some extent after rapamycin treatment. In summary, these results suggest that high-fat diet-induced obesity may lead to depressive and anxiety-like behaviors in mice by inhibiting AMPK phosphorylation and promoting mTOR shift to phosphorylation to inhibit autophagy. Therefore, improving lipid metabolism or enhancing autophagy through the AMPK/mTOR pathway could be potential targets for the treatment of obesity depression.
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Affiliation(s)
- Yong Li
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Yujie Cheng
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Yuan Zhou
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Hongmei Du
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Cui Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Zhentao Zhao
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
| | - Yuenan Chen
- Department of Clinical Pharmacy, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Zhongnan Zhou
- Department of Clinical Pharmacy, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Jinyu Mei
- Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China.
| | - Wenning Wu
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
| | - Ming Chen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
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Hadrich F, Chamkha M, Sayadi S. Protective effect of olive leaves phenolic compounds against neurodegenerative disorders: Promising alternative for Alzheimer and Parkinson diseases modulation. Food Chem Toxicol 2021; 159:112752. [PMID: 34871668 DOI: 10.1016/j.fct.2021.112752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 08/02/2021] [Revised: 11/24/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023]
Abstract
The main objective of this work was to review literature on compounds extracted from olive tree leaves, such as simple phenols (hydroxytyrosol) and flavonoids (Apigenin, apigenin-7-O-glucoside, luteolin.) and their diverse pharmacological activities as antioxidant, antimicrobial, anti-viral, anti-obesity, anti-inflammatory and neuroprotective properties. In addition, the study discussed the key mechanisms underlying their neuroprotective effects. This study adopted an approach of collecting data through the databases provided by ScienceDirect, SCOPUS, MEDLINE, PubMed and Google Scholar. This review revealed that there was an agreement on the great impact of olive tree leaves phenolic compounds on many metabolic syndromes as well as on the most prevalent neurodegenerative diseases such as Alzheimer and Parkinson. These findings would be of great importance for the use of olive tree leaves extracts as a food supplement and/or a source of drugs for many diseases. In addition, this review would of great help to beginning researchers in the field since it would offer them a general overview of the studies undertaken in the last two decades on the topic.
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Affiliation(s)
- Fatma Hadrich
- Environmental Bioprocesses Laboratory, Center of Biotechnology of Sfax, P.O. Box 1177, 3038, Sfax, Tunisia.
| | - Mohamed Chamkha
- Environmental Bioprocesses Laboratory, Center of Biotechnology of Sfax, P.O. Box 1177, 3038, Sfax, Tunisia
| | - Sami Sayadi
- Biotechnology Program, Center of Sustainable Development, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar.
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38
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Meng F, Cao Y, Khoso MH, Kang K, Ren G, Xiao W, Li D. Therapeutic effect and mechanism of combined use of FGF21 and insulin on diabetic nephropathy. Arch Biochem Biophys 2021; 713:109063. [PMID: 34695409 DOI: 10.1016/j.abb.2021.109063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 09/19/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 12/23/2022]
Abstract
Although FGF21 ameliorates diabetic nephropathy (DN), the efficacy is not satisfactory. Studies demonstrate that FGF21 combined with Insulin exhibits reciprocal sensitization on glucose and lipid metabolism in mice with type 2 diabetes. However, therapeutic effect of combined use of FGF21 and Insulin on DN has not been reported. Therefore, this study explored therapeutic effect and mechanism of combined use of FGF21 and Insulin on DN. Our results showed that compared with Insulin or FGF21 alone, FGF21 combined with Insulin further ameliorated blood glucose, HbAlc, OGTT, renal function, liver function, blood lipid, histopathological changes, oxidative stress and AGEs in the mice of DN (BKS-Leprem2Cd479/Gpt). Moreover, FGF21 combined with Insulin further reduced expressions of IL-1β, IL-6, TNF-α via promoting M1 type macrophage into M2 type macrophage. Results of real-time PCR and Western blot showed that FGF21 combined with Insulin upregulated the expressions of autophagy related genes LC3-Ⅱ and BCL-1. Mesangial cells play an important role in the pathological changes of DN mice. However, the effect of FGF21 on mesangial cells has not been reported. In this study, d-glucose was used in high glucose (HG) model in mesangial cells. The results showed that FGF21 significantly reduced the levels of OS, AGEs and cell overproliferation. Meanwhile, FGF21 significantly ameliorated autophagy level via upregulating the phosphorylation of AMPK and downregulating phosphorylation of mTOR. These effects were reversed in siRNA-β-klotho transfected mesangial cells. In conclusion, our results demonstrate that combination FGF21 with Insulin exhibits a better therapeutic effect on DN compared with FGF21 or Insulin alone. This study provides a theoretical basis for combined used of FGF21 and Insulin as a new treatment for DN and further provides theoretical support for application of FGF21 in treatment of DN.
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Affiliation(s)
- Fanrui Meng
- Northeast Agricultural University, Harbin, China.
| | - Yukai Cao
- Northeast Agricultural University, Harbin, China.
| | - Mir Hassan Khoso
- Department of Biochemistry, Shaheed Mohtarma Benazir Bhutto Medical University, Larkana, Pakistan.
| | - Kai Kang
- Northeast Agricultural University, Harbin, China.
| | - Guiping Ren
- Northeast Agricultural University, Harbin, China.
| | - Wei Xiao
- Jiangsu Kanion Pharmaceutical CO. LTD, Jiangsu, Lianyungang. State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu, China.
| | - Deshan Li
- Northeast Agricultural University, Harbin, China.
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39
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Huang Y, Cheng J, Zhou Y, Zhang Y, Zhou S, Li Q, Peng L, Wang M, Song W, Wu G. Sulfuretted hydrogen ameliorates high dose glucose-induced podocyte apoptosis via orchestrating AMPK/mTOR cascade-mediated anti-apoptotic effects. Ann Transl Med 2021; 9:1586. [PMID: 34790792 PMCID: PMC8576736 DOI: 10.21037/atm-21-5152] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/20/2021] [Indexed: 12/04/2022]
Abstract
Background Podocytes play a pivotal role in the glomerular filtration barrier and contribute to proteinuria and glomerulosclerosis through abnormal apoptosis. Longitudinal studies have indicated the protective properties of hydrogen sulfide (H2S) against neuronal cell apoptosis, whereas the biological function and the underlying molecular mechanism on glucose-induced podocyte apoptosis are largely unknown. Methods Herein, we conducted multifaceted biological analyses to verify the potential function of H2S in glucose-induced podocyte apoptosis by examining apoptotic proteins and markers (e.g., caspase 3, Hoechst) and antioxidative effects [e.g., reactive oxygen species (ROS), lipid peroxidation, superoxide dismutase (SOD), catalase (CAT)]. Then, we took advantage of transcriptome sequencing and biological analyses to further determine the potential influence of H2S as well as the accompanying molecular mechanism. Results In this study, we found that glucose-induced podocyte apoptosis could be largely rescued by H2S via antioxidative responses, which was further confirmed by transcriptome sequencing and bioinformatics analyses. According to apoptotic signaling analysis, the over-activated AMPK/mTOR signaling cascade in glucose-treated podocytes was effectively restrained. Conclusions For the first time, we indicated the protective effect and mechanism of H2S in podocytes by restricting glucose-induced apoptosis and suppressing the abnormally activated AMPK/mTOR signaling cascade. Our findings provide new references for podocyte apoptosis-associated diseases and also indicate the potential of H2S administration in clinical trials.
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Affiliation(s)
- Yong Huang
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Jie Cheng
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yehua Zhou
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yanhui Zhang
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Shuhui Zhou
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Qingzhen Li
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Lin Peng
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Maohong Wang
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Weiguo Song
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Guoqing Wu
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
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Wang J, Liu G, Li X, Huangfu M, Liu Y, Li X, Yu D, Zhou L, Chen X. Curcumol simultaneously induces both apoptosis and autophagy in human nasopharyngeal carcinoma cells. Phytother Res 2021; 35:7004-7017. [PMID: 34750896 DOI: 10.1002/ptr.7321] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 06/22/2021] [Revised: 10/02/2021] [Accepted: 10/18/2021] [Indexed: 01/14/2023]
Abstract
Autophagy is usually considered as a protective mechanism against cell death, and in the meantime, leads to cell injury even apoptosis. Apoptosis and autophagy are very closely connected and may cooperate, coexist, or antagonize each other on progressive occurrence of cell death triggered by natural compounds. Therefore, the interplay between the two modes of death is essential for the overall fate of cancer cells. Our previous study revealed that curcumol induced apoptosis in nasopharyngeal carcinoma (NPC) cells. Recently, curcumol was found to induce autophagy in cancer cells. However, whether curcumol can induce NPC cells autophagy and the effects of autophagy on apoptosis remain elusive. In this study, we found that curcumol induced autophagy through AMPK/mTOR pathway in CNE-2 cells. Moreover, inhibiting autophagy by autophagy inhibitor 3-methyladenine (3-MA) or apoptosis inhibitor z-VAD-fmk significantly increased proliferation while attenuated apoptosis and autophagy compared with the curcumol 212 μM group. In contrast, combining curcumol with autophagy agonist rapamycin and apoptosis inducer MG132 synergized the apoptotic and autophagic effect of curcumol. Taken together, our study demonstrates that curcumol promotes autophagy in NPC via AMPK/mTOR pathway, induces autophagy enhances the activity of curcumol in NPC cells; the combination of autophagy inducer and curcumol can be a new therapeutic strategy for NPC.
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Affiliation(s)
- Juan Wang
- Department of Pharmacy, Guilin Medical University, Guilin, China.,Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, the Affiliated Hospital of Guilin Medical University, Guilin, China.,Guangxi Health Commission Key Laboratory of Basic Research in Sphingolipid Metabolism Related Diseases, the Affiliated Hospital of Guilin Medical University, Guilin, China.,Faculty of Basic Medicine, Guilin Medical University, Guilin, China
| | - Guoxiang Liu
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Xiaojuan Li
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Mengjie Huangfu
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Yisa Liu
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Xumei Li
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Dan Yu
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Luwei Zhou
- Department of Pharmacy, Guilin Medical University, Guilin, China
| | - Xu Chen
- Department of Pharmacy, Guilin Medical University, Guilin, China
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Wang J, Fan S, Xiong Q, Niu Y, Zhang X, Qin J, Shi Y, Zhang L. Glucagon-like peptide-1 attenuates cardiac hypertrophy via the AngII/AT1R/ACE2 and AMPK/mTOR/p70S6K pathways. Acta Biochim Biophys Sin (Shanghai) 2021; 53:1189-1197. [PMID: 34357376 DOI: 10.1093/abbs/gmab099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/03/2021] [Indexed: 12/15/2022] Open
Abstract
Glucagon-like peptide-1 (GLP-1), a novel type of glucose-lowering agent, has been reported to exert cardioprotective effects. However, the cardioprotective mechanism of GLP-1 on spontaneous hypertension-induced cardiac hypertrophy has not been fully elucidated. In this study, we revealed that liraglutide or alogliptin treatment ameliorated spontaneous hypertension-induced cardiac hypertrophy, as evidenced by decreased levels of cardiac hypertrophic markers (atrial natriuretic peptide, brain natriuretic peptide, and β-myosin heavy chain), as well as systolic blood pressure, diastolic blood pressure, mean arterial pressure, and histological changes. Both drugs significantly reduced the levels of angiotensin II (AngII) and AngII type 1 receptor (AT1R) and upregulated the levels of AngII type 2 receptor (AT2R) and angiotensin-converting enzyme 2 (ACE2), as indicated by a reduced AT1R/AT2R ratio. Simultaneously, treatment with liraglutide or alogliptin significantly increased GLP-1 receptor expression and adenosine monophosphate-activated protein kinase (AMPK) phosphorylation and downregulated the phosphorylation of mammalian target of rapamycin (mTOR), p70 ribosomal S6 protein kinase, and eukaryotic translation initiation factor 4E binding protein 1 in spontaneous hypertension rats. Furthermore, our data demonstrated that the AMPK inhibitor compound C or mTOR activator MHY1485 inhibited the anti-hypertrophic effect of GLP-1. In summary, our study suggests that liraglutide or alogliptin protects the heart against cardiac hypertrophy by regulating the expression of AngII/AT1R/ACE2 and activating the AMPK/mTOR pathway, and GLP-1 agonist can be used in the treatment of patients with cardiac hypertrophy.
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Affiliation(s)
- Jing Wang
- Department of Cardiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
| | - Shaohua Fan
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Qianfeng Xiong
- Department of Cardiology, Fengcheng People’s Hospital, Fengcheng 331100, China
| | - Yu Niu
- Department of Cardiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
| | - Xin Zhang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Junnan Qin
- Department of Cardiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
| | - Yawei Shi
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Lihui Zhang
- Department of General Medical, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
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Xu X, Yu Z, Han B, Li S, Sun Y, Du Y, Wang Z, Gao D, Zhang Z. Luteolin alleviates inorganic mercury-induced kidney injury via activation of the AMPK/mTOR autophagy pathway. J Inorg Biochem 2021; 224:111583. [PMID: 34428638 DOI: 10.1016/j.jinorgbio.2021.111583] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 05/06/2021] [Revised: 08/14/2021] [Accepted: 08/15/2021] [Indexed: 12/11/2022]
Abstract
Inorganic mercury is a ubiquitous toxic pollutant in the environment. Exposure to inorganic mercury can cause various poisonous effects, including kidney injury. However, no safe and effective treatment for kidney injury caused by inorganic mercury has been found and used. Luteolin (Lut) possesses various beneficial bioactivities. Here, our research aims to investigate the protective effect of Lut on renal injury induced by mercury chloride (HgCl2) and identify the underlying autophagy regulation mechanism. Twenty-eight 6-8 weeks old Wistar rats were randomly assigned to four groups: control, HgCl2, HgCl2 + Lut, and Lut. We performed the determination of oxidative stress and renal function indicators, histopathological analysis, the terminal deoxynucleotidyl transferase-mediated deoxyuracil nucleoside triphosphate nick-end labeling assay to detect apoptosis, western blot detection of autophagy-related protein levels, and atomic absorption method to detect mercury content. Our results showed that Lut ameliorated oxidative stress, apoptosis and restored the autophagy and renal function caused by HgCl2 in rats. Concretely, the level of nuclear factor E2-related factor, renal adenosine monophosphate-activated protein kinase (AMPK) expression, and autophagy regulation-related proteins levels were down-regulated, and the mammalian target of rapamycin (mTOR) expression was up-regulated by HgCl2 treatment. However, Lut treatment reversed the above changes. Notably, Lut reduced the accumulation of HgCl2 in the kidneys and promoted the excretion of HgCl2 through urine. Collectively, our results demonstrate that Lut can attenuate inorganic mercury-induced renal injury via activating the AMPK/mTOR autophagy pathway. Therefore, Lut may be a potential biological medicine to protect against renal damage induced by HgCl2.
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Affiliation(s)
- Xinyue Xu
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Zhongxian Yu
- Pharmacy Department, The Affiliated Hospital to Changchun University of Chinese Medicine, 1478 Gongnong Road, Hongqi Street, Chaoyang District, Changchun City, Jilin Province 130021, China
| | - Biqi Han
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Siyu Li
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Yingshuo Sun
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Yu Du
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Ziwei Wang
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Di Gao
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Zhigang Zhang
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, 600 Changjiang Road, Harbin 150030, China.
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Zhou X, Xu SN, Yuan ST, Lei X, Sun X, Xing L, Li HJ, He CX, Qin W, Zhao D, Li PQ, Moharomd E, Xu X, Cao HL. Multiple functions of autophagy in vascular calcification. Cell Biosci 2021; 11:159. [PMID: 34399835 DOI: 10.1186/s13578-021-00639-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 06/27/2021] [Indexed: 12/12/2022] Open
Abstract
Background Vascular calcification is a closely linked to cardiovascular diseases, such as atherosclerosis, chronic kidney disease, diabetes, hypertension and aging. The extent of vascular calcification is closely correlate with adverse clinical events and cardiovascular all-cause mortality. The role of autophagy in vascular calcification is complex with many mechanistic unknowns.
Methods In this review, we analyze the current known mechanisms of autophagy in vascular calcification and discuss the theoretical advantages of targeting autophagy as an intervention against vascular calcification. Results Here we summarize the functional link between vascular calcification and autophagy in both animal models of and human cardiovascular disease. Firstly, autophagy can reduce calcification by inhibiting the osteogenic differentiation of VSMCs related to ANCR, ERα, β-catenin, HIF-1a/PDK4, p62, miR-30b, BECN1, mTOR, SOX9, GHSR/ERK, and AMPK signaling. Conversely, autophagy can induce osteoblast differentiation and calcification as mediated by CREB, degradation of elastin, and lncRNA H19 and DUSP5 mediated ERK signaling. Secondly, autophagy also links apoptosis and vascular calcification through AMPK/mTOR/ULK1, Wnt/β-catenin and GAS6/AXL synthesis, as apoptotic cells become the nidus for calcium-phosphate crystal deposition. The failure of mitophagy can activate Drp1, BNIP3, and NR4A1/DNA‑PKcs/p53 mediated intrinsic apoptotic pathways, which have been closely linked to the formation of vascular calcification. Additionally, autophagy also plays a role in osteogenesis by regulating vascular calcification, which in turn regulates expression of proteins related to bone development, such as osteocalcin, osteonectin, etc. and regulated by mTOR, EphrinB2 and RhoA. Furthermore, autophagy also promotes vitamin K2-induced MC3T3 E1 osteoblast differentiation and FGFR4/FGF18- and JNK/complex VPS34–beclin-1-related bone mineralization via vascular calcification. Conclusion The interaction between autophagy and vascular calcification are complicated, with their interaction affected by the disease process, anatomical location, and the surrounding microenvironment. Autophagy activation in existent cellular damage is considered protective, while defective autophagy in normal cells result in apoptotic activation. Identifying and maintaining cells at the delicate line between these two states may hold the key to reducing vascular calcification, in which autophagy associated clinical strategy could be developed.
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Li J, Min Y. Pre-clinical evidence that salinomycin is active against retinoblastoma via inducing mitochondrial dysfunction, oxidative damage and AMPK activation. J Bioenerg Biomembr 2021; 53:513-523. [PMID: 34365583 DOI: 10.1007/s10863-021-09915-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 02/22/2021] [Accepted: 07/20/2021] [Indexed: 11/28/2022]
Abstract
The poor outcomes in retinoblastoma necessitate new treatments. Salinomycin is an attractive candidate, and has demonstrated selective anti-cancer properties in different cancer types. This work addressed the efficacy of salinomycin in retinoblastoma models and probe the associated mechanisms. Cellular functional assays were conducted to determine the effects salinomycin in vitro. Xenograft retinoblastoma mouse model was established to investigate the efficacy of salinomycin in vivo. Biochemical assays were conducted to analyze the mechanism of salinomycin's action focusing on mitochondrial functions, energy reduction-related signaling pathways. Salinomycin has positive effects towards retinoblastoma cells regardless of heterogeneity through suppressing growth and inducing apoptosis. Salinomycin also specifically inhibits cells displaying stemness and highly invasive phenotypes. Using retinoblastoma xenograft mouse model, we show that salinomycin at non-toxic dose effectively inhibits growth and induces apoptosis. Mechanistic studies show that salinomycin inhibits mitochondrial respiration via specifically suppressing complex I and II activities, reduces mitochondrial membrane potential and decreases energy reduction, followed by induction of oxidative stress and damage, AMPK activation and mTOR inhibition. Our study highlights that adding salinomycin to the existing treatment armamentarium for retinoblastoma is beneficial.
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Affiliation(s)
- Jing Li
- Department of Ophthalmology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Wuhan, 430014, Hubei, China
| | - Yao Min
- Department of Ophthalmology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Street, Wuhan, 430014, Hubei, China.
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Wang G, Yu Y, Wang YZ, Yin PH, Xu K, Zhang H. The effects and mechanisms of isoliquiritigenin loaded nanoliposomes regulated AMPK/mTOR mediated glycolysis in colorectal cancer. Artif Cells Nanomed Biotechnol 2021; 48:1231-1249. [PMID: 32985258 DOI: 10.1080/21691401.2020.1825092] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this study, isoliquiritigenin (ISL) incorporated nanoliposomes were prepared and their effects on colorectal cancer (CRC) cell lines were investigated. Herein, we sought to explore the anti-cancer mechanisms of ISL loaded nanoliposomes (ISL-NLs) on AMP-activated protein kinase/mammalian target of rapamycin (AMPK/mTOR) pathways mediated glycolysis. Also, the key targets such as caveolin 1 (CAV1), glucose transporters and Akt/mTOR that promote glycolysis, and are activated via the induction of α-enolase (ENO1), fructose bisphosphate aldolase A (ALDOA) and monocarboxylate transporter 4 (MCT4) expressions were also investigated. It was shown that ISL-NLs significantly suppressed the proliferation and glucose uptake of CRC cell by potentially regulating the glycolysis and lactate targets as well as pathways that formed the basis of the anti-CRC effects of ISL-NLs. The mechanism underlying this effect was further validated via the regulation of some key targets such as ENO1, ALDOA, lactate dehydrogenase A (LDHA) and MCT4 in glycolysis coupled with cellular myelocytomatosis oncogene (c-myc), hypoxia-inducible factor 1-alpha (HIF-1α) in protein kinase B/mTOR (Akt/mTOR) pathways. Moreover, the AMPK proteins were identified to be up-regulated while the lactic acid production was suppressed by ISL-NLs in the CRC cells, indicating that ISL-NLs had an inhibitory effect on AMPK mediated glycolysis and lactate production. Altogether, these results have provided insights into the mechanism underlying the key role that liposomal ISL played in the multiple inhibition of AMPK and Akt/mTOR mediated glycolysis and lactate generation, which may be regulated as the alternative metabolic pathways of CRC as well as serve as adjuvant therapy for the disease.
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Affiliation(s)
- Gang Wang
- Department of Pharmaceutics, Shanghai Eighth People's Hospital, Jiangsu University, Shanghai, China
| | - Yang Yu
- School of Pharmacy, Jiangsu University Zhenjiang City, China
| | - Yu-Zhu Wang
- School of Pharmacy, Jiangsu University Zhenjiang City, China
| | - Pei-Hao Yin
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ke Xu
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Heng Zhang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
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Xie F, Gong J, Tan H, Zhang H, Ma J. Preclinical evidence of synergism between atovaquone and chemotherapy by AMPK-dependent mitochondrial dysfunction. Eur J Pharmacol 2021; 907:174256. [PMID: 34129882 DOI: 10.1016/j.ejphar.2021.174256] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 05/31/2021] [Accepted: 06/11/2021] [Indexed: 12/01/2022]
Abstract
Chemoresistance has been associated with increased reliance on mitochondrial functions in many cancers, including lung cancer. Atovaquone is an anti-malaria drug and mitochondrial inhibitor. In this work, we attempted to explore whether atovaquone can be repurposed for lung cancer treatment to overcome chemoresistance. We showed that atovaquone inhibited proliferation, colony formation and survival in non-small cell lung cancer cell (NSCLC) cells. Of note, the effective dose of atovaquone was clinically achievable. Combination index value indicated that atovaquone and carboplatin were synergistic in inhibiting NSCLC. The potent efficacy of atovaquone and its synergism with chemotherapeutic drug were also demonstrated in NSCLC xenograft mice model. Mechanism studies showed that the synergism between atovaquone and carboplatin was due to atovaquone's ability in disrupting mitochondrial functions via specifically inhibiting complex III induced oxygen consumption. Subsequently, atovaquone activated AMP-activated protein kinase (AMPK) and inhibited mammalian target of rapamycin (mTOR) signaling. AMPK inhibition reversed the anti-NSCLC activity of atovaquone, suggesting that the action of atovaquone is also dependent on AMPK. Our work suggests that atovaquone is an attractive candidate for NSCLC treatment. Our findings emphasize that inhibition of mitochondrial function is a promising therapeutic strategy to enhance NSCLC chemosensitivity.
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Affiliation(s)
- Fan Xie
- Department of Pulmonary and Critical Care Medicine, Jingzhou Hospital, Yangtze University, Jingzhou, China
| | - Jianhua Gong
- Department of Pulmonary and Critical Care Medicine, Jingzhou Hospital, Yangtze University, Jingzhou, China
| | - Hongxia Tan
- Department of Pulmonary and Critical Care Medicine, Jingzhou Hospital, Yangtze University, Jingzhou, China
| | - Han Zhang
- Department of Pulmonary and Critical Care Medicine, Jingzhou Hospital, Yangtze University, Jingzhou, China
| | - Jingping Ma
- Department of Pulmonary and Critical Care Medicine, Jingzhou Hospital, Yangtze University, Jingzhou, China.
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Wang W, Lv R, Zhang J, Liu Y. circSAMD4A participates in the apoptosis and autophagy of dopaminergic neurons via the miR‑29c‑3p‑mediated AMPK/mTOR pathway in Parkinson's disease. Mol Med Rep 2021; 24:540. [PMID: 34080649 PMCID: PMC8170871 DOI: 10.3892/mmr.2021.12179] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 04/09/2021] [Indexed: 11/18/2022] Open
Abstract
Parkinson's disease (PD) can lead to movement injury and cognitive dysfunction. Although advances have been made in attenuating PD, the effect of inhibiting the development of PD remains disappointing. Therefore, the present study aimed at investigating the etiology of Parkinson's disease and developing an alternative therapeutic strategy for patients with PD. A PD mouse model was established using an intraperitoneal injection of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine hydrochloride (MPTP-HCl; 30 mg/kg/day for 5 days), and a PD cellular model was established by treating SH-SY5Y cells with different concentrations of 1-methyl-4-phenylpyridinium (MPP+) for 24 h. The expression levels of circular RNA sterile α motif domain containing 4A (circSAMD4A) and microRNA (miR)-29c-3p in both midbrain tissues and SH-SY5Y cells were detected via reverse transcription-quantitative PCR. The interaction between circSAMD4A and miR-29c-3p was verified using a dual-luciferase reporter experiment. Apoptosis-, autophagy- and 5′AMP-activated protein kinase (AMPK)/mTOR cascade-associated proteins in midbrain tissues and SH-SY5Y cells were detected using western blotting. Furthermore, TUNEL staining and flow cytometry were used to analyze cell apoptosis. It was found that circSAMD4A was upregulated, while miR-29c-3p was downregulated in both PD animal and cellular models. Moreover, circSAMD4A directly targeted and negatively regulated miR-29c-3p. Further studies identified that circSAMD4A knockdown inhibited MPTP- or MPP+-induced apoptosis and autophagy; however, these effects were abolished by an miR-29c-3p inhibitor. In addition, circSAMD4A knockdown repressed phosphorylated-AMPK expression and increased mTOR expression in MPTP- or MPP+-induced PD models, the effects of which were reversed by a miR-29c-3p inhibitor. Collectively, these results suggested that circSAMD4A participated in the apoptosis and autophagy of dopaminergic neurons by modulating the AMPK/mTOR cascade via miR-29c-3p in PD.
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Affiliation(s)
- Wensheng Wang
- Department of Neurology, Ningbo No. 6 Hospital, Ningbo, Zhejiang 315040, P.R. China
| | - Rongxiang Lv
- Department of Neurology, Ningbo No. 6 Hospital, Ningbo, Zhejiang 315040, P.R. China
| | - Jingjing Zhang
- Department of Neurology, Ningbo No. 6 Hospital, Ningbo, Zhejiang 315040, P.R. China
| | - Yu Liu
- Department of Neurology, Ningbo No. 6 Hospital, Ningbo, Zhejiang 315040, P.R. China
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Han S, Zhu F, Huang X, Yan P, Xu K, Shen F, Sun J, Yang Z, Jin G, Teng Y. Maternal obesity accelerated non-alcoholic fatty liver disease in offspring mice by reducing autophagy. Exp Ther Med 2021; 22:716. [PMID: 34007325 PMCID: PMC8120514 DOI: 10.3892/etm.2021.10148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/02/2021] [Indexed: 12/14/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease characterized by an excessive accumulation of triacylglycerol in the liver. Autophagy is a lysosome-dependent degradation product recovery process, which widely occurs in eukaryotic cells, responsible for the vital maintenance of cellular energy balance. Previously published studies have demonstrated that autophagy is closely related to NAFLD occurrence and maternal obesity increases the susceptibility of offspring to non-alcoholic fatty liver disease, however, the underlying mechanism of this remains unclear. In the present study, NAFLD mouse models (offspring of an obese mother mouse via high-fat feeding) were generated, and the physiological indices of the liver were observed using total cholesterol, triglyceride, high-density lipoprotein and low-density lipoprotein serum assay kits. The morphological changes of the liver were also observed via HE, Masson and oil red O staining. Reverse transcription-quantitative-PCR and western blotting were performed to detect changes of autophagy-related genes in liver or fibrosis marker proteins (α-smooth muscle actin or TGF-β1). Changes in serum inflammatory cytokine IL-6 levels were determined via ELISA. The results of the present study demonstrated that the offspring of an obese mother were more likely to develop NALFD than the offspring of a chow-fed mother, due to their increased association with liver fibrosis. When feeding continued to 17 weeks, the worst cases of NAFLD were observed and the level of autophagy decreased significantly compared with the offspring of a normal weight mouse. In addition, after 17 weeks of feeding, compared with the offspring of a chow-fed mother, the offspring of an obese mouse mother had reduced adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) phosphorylation levels and increased mammalian target of rapamycin (mTOR) phosphorylation levels. These results suggested that a reduced level of AMPK/mTOR mediated autophagy may be of vital importance for the increased susceptibility of offspring to NAFLD caused by maternal obesity. In conclusion, the current study provided a new direction for the treatment of NAFLD in offspring caused by maternal obesity.
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Affiliation(s)
- Shuguang Han
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Feng Zhu
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Xiaoxia Huang
- Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China.,The Second Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310000, P.R. China
| | - Panpan Yan
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Ke Xu
- Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Fangfang Shen
- Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Jiawen Sun
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Zeyu Yang
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Guoxi Jin
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Yiqun Teng
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
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Wang D, Wei Y, Tian J, He D, Zhang R, Ji X, Huang X, Sun J, Gao J, Wang Z, Pang Q, Liu Q. Oxiracetam Mediates Neuroprotection Through the Regulation of Microglia Under Hypoxia-Ischemia Neonatal Brain Injury in Mice. Mol Neurobiol 2021; 58:3918-3937. [PMID: 33886092 DOI: 10.1007/s12035-021-02376-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 11/29/2020] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
In neonatal hypoxic-ischemic brain damage (HIBD), in addition to damage caused by hypoxia and ischemia, over-activation of inflammation leads to further deterioration of the condition, thus greatly shortening the optimal treatment time window. Ischemic penumbra, the edematous area encompassing the infarct core, is characterized by typical activation of microglia and overt inflammation, and prone to incorporate into the infarct core gradually after ischemia onset. If treated in time, the cells located in the penumbra can survive, thereby impeding the expansion of the infarction. We demonstrated for the first time that in the acute phase of HIBD in neonatal mice, treatment of Oxiracetam (ORC) significantly curtailed the size of ischemic penumbra together with drastic reduction of infarction. By staining various cellular markers, we found that the penumbra was defined and concentrated with activated microglia. We also analyzed transmission electron microscopy and Luminex assay results to elucidate the mechanisms involved. We further confirmed that ORC switched polarization of microglia from the inflammatory towards the alternatively activated phenotype, thus promoting microglia from being neurotoxic into neuroprotective. Meanwhile, ORC decreased proliferation of microglia; however, their functions of phagocytosis and autophagy were otherwise enhanced. Last, we clarified that ORC promoted autophagy through the AMPK/mTOR pathway, which further induced the transition of the inflammatory to the alternatively activated phenotype in microglia. The pro-inflammatory factors secretion was inhibited as well, thereby reducing the progression of the infarction. Taken together, it is concluded that Oxiracetam reduced the expansion of ischemic infarction in part via regulating the interplay between microglia activation and autophagy, which would delay the progression of HIBD and effectively prolong the time window for the clinical treatment of HIBD.
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Affiliation(s)
- Dan Wang
- Department of Histology and Embryology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, 44# Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China.,Department of Reproductive Medicine, Dongchangfu County Maternal and Child Health Hospital, Liaocheng, 252000, Shandong, China
| | - Yanbang Wei
- Department of Histology and Embryology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, 44# Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Jingxia Tian
- Department of Gynaecology and Obstetrics, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250013, Shandong, China
| | - Dong He
- Department of Neurosurgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250021, Shandong, China
| | - Rui Zhang
- Department of Neurosurgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250021, Shandong, China
| | - Xiaoshuai Ji
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Xiaoming Huang
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jun Sun
- Department of Neurosurgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250021, Shandong, China
| | - Jiajia Gao
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Zixiao Wang
- Department of Histology and Embryology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, 44# Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Qi Pang
- Department of Neurosurgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250021, Shandong, China
| | - Qian Liu
- Department of Histology and Embryology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, 44# Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China.
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Jie C, Xuan W, Feng HD, Hua DM, Bo W, Fei S, Hao Z. AdipoR2 inhibits human glioblastoma cell growth through the AMPK/mTOR pathway. Eur J Med Res 2021; 26:28. [PMID: 33752745 PMCID: PMC7986524 DOI: 10.1186/s40001-021-00496-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/04/2021] [Indexed: 12/15/2022] Open
Abstract
Background AdipoR2, which belongs to the seven-transmembrane-domain receptor family, has been shown to play an important role in the development of human tumours, but the underlying mechanisms are poorly understood. In this study, we found that AdipoR2 expression correlates with glioma grade. In addition, we also investigated the mechanisms behind the antiproliferative effects of AdipoR2 in U251 cells (a human glioma cell line) using colony formation and WST-8 growth assays. Methods The U251 cell line was cultured in vitro. Western blotting was used to detect the expression of relevant proteins. Quantitative RT-PCR was used to detect AdipoR1 and AdipoR2 expression. Flow cytometry was used to detect cell cycle assay results. The gene expression profiles of glioma samples from the CGGA database were analysed by MATLAB and GSEA software. Results The AMPK/mTOR pathway plays a central role in the regulation of cell proliferation, differentiation and migration and may promote tumorigenesis. Therefore, we can control cancer progression by modulating the AMPK/mTOR pathway. However, there is no information on the relationship between AdipoR and AMPK/mTOR in central nervous system tumours such as GBM. In this study. We found 648 upregulated genes and 436 downregulated genes correlated with AdipoR2 expression in 158 glioma samples. GSEA suggested that AdipoR2 is a cell cycle-associated gene. The results of the flow cytometry analysis indicated that AdipoR2 induced G0/G1 cell cycle arrest in U251 cells. Furthermore, we identified the AMPK/mTOR signalling axis to be involved in AdipoR2-induced cell cycle arrest. Conclusions Our results suggest that AdipoR2 may represent a novel endogenous negative regulator of GBM cell proliferation. These findings also suggest that AdipoR2 may be a promising therapeutic target in GBM patients.
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Affiliation(s)
- Chen Jie
- Department of Neurosurgery, XuZhou Central Hospital, Xuzhou, China.
| | - Wang Xuan
- Xuzhou First People's Hospital, The Affiliated Hospital of China University of Mining and Technology, Xuzhou, China
| | - Han-Dong Feng
- Department of Neurosurgery, XuZhou Central Hospital, Xuzhou, China
| | - Ding-Mao Hua
- Department of Neurosurgery, XuZhou Central Hospital, Xuzhou, China
| | - Wang Bo
- Department of Neurosurgery, XuZhou Central Hospital, Xuzhou, China
| | - Sun Fei
- Department of Neurosurgery, XuZhou Central Hospital, Xuzhou, China
| | - Zhang Hao
- Department of Neurosurgery, XuZhou Central Hospital, Xuzhou, China
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