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Qiu S, Xian Z, Chen J, Huang P, Wang H, Wang H, Xu J. Microglia nuclear receptor corepressor 1 deficiency alleviates neuroinflammation in mice. Neurosci Lett 2024; 822:137643. [PMID: 38242347 DOI: 10.1016/j.neulet.2024.137643] [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: 09/22/2023] [Revised: 12/23/2023] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
Given the established role of nuclear receptor corepressor 1 (NCoR1) in sensing environmental cues and the importance of inflammation in neurodegenerative diseases, elucidation of NCoR1 involvement in neuroinflammation has notable implications. Yet, its regulatory mechanism remains largely unclear. Under in vitro conditions, NCoR1 expression peaked and then decreased at 12 h after lipopolysaccharides (LPS) stimulation in BV2 cells, However, NCoR1 knockdown using si-RNA attenuated microglial inflammation, evident by reduced the levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX2), phosphorylated-JNK and high mobility group box-1 (HMGB1). Furthermore, NCoR1 suppression could counteract the decline in mitochondrial membrane potential while simultaneously enhancing the expression of peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α). Under in vivo conditions, microglia-specific NCoR1 knockout (MNKO) mice after LPS injections alleviated the symptoms of anhedonia, diminished autonomic activity and cognitive impairment. Additionally, MNKO mice showed attenuation of microglial activation, downregulated HMGB1 and COX2, and upregulated PGC-1α expression in the cortex. In conclusion, these findings suggest that NCoR1 deficiency leads to a modest reduction in neuroinflammation, possibly attributed to the increased expression of PGC-1α.
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Affiliation(s)
- Shuqin Qiu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zihong Xian
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Junyu Chen
- Department of Neurology, Guangzhou First People's Hospital Baiyun Hospital, Guangzhou 510450, China
| | - Peng Huang
- Women and Children Medical Research Center, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University, Foshan 528000, China
| | - Honghao Wang
- Department of Neurology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510006, China
| | - Haitao Wang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou 510515, China; Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Guangzhou 510515, China
| | - Jiangping Xu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou 510515, China; Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Guangzhou 510515, China.
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Wang LM, Wang WQ, Wang H, Chunyu WX, Li J, Xian Z, Li CY. [A practice of curriculum ideological and political education in Medical Parasitology teaching based on the situation of Yunnan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 34:537-541. [PMID: 36464256 DOI: 10.16250/j.32.1374.2022002] [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] [Indexed: 06/17/2023]
Abstract
In order to build a unified teaching pattern integrating knowledge delivery, skill cultivation and value guidance, this article, based on the targets of cultivating medical talents in the new era, aims to explore the pathway of curriculum ideological and political education in Medical Parasitology teaching based on the situation of Yunnan Province. By analyzing the epidemiology of parasitic diseases in Yunnan Province, the remarkable achievements of parasitic diseases control in China and Yunnan Province, cases with parasitic disease misdiagnosis, parasitologists ' selfless contributions, the contributions of traditional Chinese medicines to parasitic diseases control and the contributions of traditional Chinese medicines in Yunnan Province, the ideological and political education is naturally integrated into Medical Parasitology teaching, to create an educational model combining professional course teaching with ideological and political education curriculum.
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Affiliation(s)
- L M Wang
- Co-first authors
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
| | - W Q Wang
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
- Co-first authors
| | - H Wang
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
| | - W X Chunyu
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
| | - J Li
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
| | - Z Xian
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
| | - C Y Li
- Department of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan 650500, China
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Wang Z, Shi X, Li Y, Fan J, Zeng X, Xian Z, Wang Z, Sun Y, Wang S, Song P, Zhao S, Hu H, Ju D. Blocking autophagy enhanced cytotoxicity induced by recombinant human arginase in triple-negative breast cancer cells. Cell Death Dis 2014; 5:e1563. [PMID: 25501824 PMCID: PMC4454157 DOI: 10.1038/cddis.2014.503] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 10/22/2014] [Accepted: 10/22/2014] [Indexed: 11/10/2022]
Abstract
Depletion of arginine by recombinant human arginase (rhArg) has proven to be an effective cancer therapeutic approach for a variety of malignant tumors. Triple-negative breast cancers (TNBCs) lack of specific therapeutic targets, resulting in poor prognosis and limited therapeutic efficacy. To explore new therapeutic approaches for TNBC we studied the cytotoxicity of rhArg in five TNBC cells. We found that rhArg could inhibit cell growth in these five TNBC cells. Intriguingly, accumulation of autophagosomes and autophagic flux was observed in rhArg-treated MDA-MB-231 cells. Inhibition of autophagy by chloroquine (CQ), 3-methyladenine (3-MA) and siRNA targeting Beclin1 significantly enhanced rhArg-induced cytotoxic effect, indicating the cytoprotective role of autophagy in rhArg-induced cell death. In addition, N-acetyl-l-cysteine (NAC), a common antioxidant, blocked autophagy induced by rhArg, suggesting that reactive oxygen species (ROS) had an essential role in the cytotoxicity of rhArg. This study provides new insights into the molecular mechanism of autophagy involved in rhArg-induced cytotoxicity in TNBC cells. Meanwhile, our results revealed that rhArg, either alone or in combination with autophagic inhibitors, might be a potential novel therapy for the treatment of TNBC.
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Affiliation(s)
- Z Wang
- 1] Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China [2] Department of Biopharmaceutical Research, Shanghai Institute of Pharmaceutical Industry, Shanghai, China
| | - X Shi
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - Y Li
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - J Fan
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - X Zeng
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Xian
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Wang
- Department of Pulmonary Medicine, People's Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China
| | - Y Sun
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - S Wang
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - P Song
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
| | - S Zhao
- Department of Head and Neck Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - H Hu
- Department of Biopharmaceutical Research, Shanghai Institute of Pharmaceutical Industry, Shanghai, China
| | - D Ju
- Department of Biosynthesis and Key Lab of Smart Drug Delivery of MOE, School of Pharmacy, Fudan University, Shanghai, China
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Zeng X, Li Y, Fan J, Zhao H, Xian Z, Sun Y, Wang Z, Wang S, Zhang G, Ju D. Recombinant human arginase induced caspase-dependent apoptosis and autophagy in non-Hodgkin's lymphoma cells. Cell Death Dis 2013; 4:e840. [PMID: 24113174 PMCID: PMC3824669 DOI: 10.1038/cddis.2013.359] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 08/05/2013] [Accepted: 08/12/2013] [Indexed: 12/19/2022]
Abstract
Arginase, an arginine-degrading enzyme, has gained increased attention recently as a new experimental therapeutics for a variety of malignant solid cancers. In this study, we found that recombinant human arginase (rhArg) could induce remarkable growth inhibition, cell cycle arrest, and caspase-dependent apoptosis in Raji and Daudi non-Hodgkin's lymphoma (NHL) cells through arginine deprivation. Interestingly, rhArg-treatment resulted in the appearance of autophagosomes and upregulation of microtubule-associated protein light chain 3 II, indicating that rhArg induced autophagy in lymphoma cells. Further study suggested that mammalian target of rapamycin/S6k signaling pathway may be involved in rhArg-induced autophagy in NHL cells. Moreover, blocking autophagy using pharmacological inhibitors (3-methyladenine and chloroquine) or genetic approaches (small interfering RNA targeting autophagy-related gene 5 and Beclin-1) enhanced the cell killing effect of rhArg. These results demonstrated that rhArg has a potent anti-lymphoma activity, which could be improved by in combination with autophagic inhibitors, suggesting that rhArg, either alone or in combination with autophagic inhibitors, could be a potential novel therapeutics for the treatment of NHL.
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Affiliation(s)
- X Zeng
- Department of Biosynthesis, School of Pharmacy, Fudan University, Shanghai 201203, China
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Hosaka J, Roy S, Kuroki K, Xian Z, Kvernebo K, Enge I, Laerum F. Placement of a spring filter during interventional treatment of deep venous thrombosis to reduce the risk of pulmonary embolism. Acta Radiol 1999; 40:545-51. [PMID: 10485246 DOI: 10.3109/02841859909175582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To assess the efficacy of the Spring filter during interventional treatment of deep venous thrombosis in vivo. MATERIAL AND METHODS A model of inferior vena cava thrombosis was used. Part I: The thrombus was treated by the pulse-spray technique (PT) (urokinase 250,000 IU; n=7) or a rotatory basket catheter, Thrombolizer (MT) (activated with compressed air at 7 atm; n=5). Part II: Following placement of a Spring filter, the animal underwent PT (n=5) or MT (n=5). Based on the results of part I, the treatment protocol was modified (PT, urokinase 500,000 IU; MT, compressed air at 8 atm). Embolus volumes trapped by the filter and found in the lungs were calculated and the filtering efficacy quantified. RESULTS Part I: Pulmonary emboli (1 to 4 mm in diameter) were observed in 3 animals in the PT group and 1 animal in the MT group, respectively. Median reduction in thrombus volume was 21% and 4% by PT and MT, respectively. Part II: In the PT group, 58% and 100% of the total embolus load was trapped in 2 animals, while the filter failed to trap emboli (1 to 1.5 mm in diameter) in 1 animal. In the remaining 2 animals, no embolus was found trapped by the filter or in the lungs. In the MT group, 55 97% (median 83%) of the embolus load was trapped. Emboli found in the lungs did not exceed 4 mm in diameter. CONCLUSION Preceding interventional treatment of venous thrombosis with placement of the Spring filter reduced the embolic burden on the lungs.
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Affiliation(s)
- J Hosaka
- Section for Experimental Radiology, Institute for Surgical Research, The National Hospital, Oslo, Norway
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