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Yao C, Li Z, Sun K, Zhang Y, Shou S, Jin H. Mitochondrial dysfunction in acute kidney injury. Ren Fail 2024; 46:2393262. [PMID: 39192578 PMCID: PMC11360640 DOI: 10.1080/0886022x.2024.2393262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/30/2024] [Accepted: 08/12/2024] [Indexed: 08/29/2024] Open
Abstract
Acute kidney injury (AKI) is a systemic clinical syndrome increasing morbidity and mortality worldwide in recent years. Renal tubular epithelial cells (TECs) death caused by mitochondrial dysfunction is one of the pathogeneses. The imbalance of mitochondrial quality control is the main cause of mitochondrial dysfunction. Mitochondrial quality control plays a crucial role in AKI. Mitochondrial quality control mechanisms are involved in regulating mitochondrial integrity and function, including antioxidant defense, mitochondrial quality control, mitochondrial DNA (mtDNA) repair, mitochondrial dynamics, mitophagy, and mitochondrial biogenesis. Currently, many studies have used mitochondrial dysfunction as a targeted therapeutic strategy for AKI. Therefore, this review aims to present the latest research advancements on mitochondrial dysfunction in AKI, providing a valuable reference and theoretical foundation for clinical prevention and treatment of this condition, ultimately enhancing patient prognosis.
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Affiliation(s)
- Congcong Yao
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Ziwei Li
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Keke Sun
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Yan Zhang
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Songtao Shou
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Heng Jin
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
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Hu W. EP300-mediated H3 acetylation elevates MTHFD2 expression to reduce mitochondrial dysfunction in lipopolysaccharide-induced tubular epithelial cells. Ren Fail 2024; 46:2369342. [PMID: 39230047 PMCID: PMC11376309 DOI: 10.1080/0886022x.2024.2369342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 09/05/2024] Open
Abstract
Sepsis represents an organ dysfunction resulting from the host's maladjusted response to infection, and can give rise to acute kidney injury (AKI), which significantly increase the morbidity and mortality of septic patients. This study strived for identifying a novel therapeutic strategy for patients with sepsis-induced AKI (SI-AKI). Rat tubular epithelial NRK-52E cells were subjected to lipopolysaccharide (LPS) exposure for induction of in-vitro SI-AKI. The expressions of E1A binding protein p300 (EP300) and methylenetetrahydrofolate dehydrogenase 2 (MTHFD2) in NRK-52E cells were assessed by western blot and qRT-PCR, and their interaction was explored by chromatin immunoprecipitation performed with antibody for H3K27 acetylation (H3K27ac). The effect of them on SI-AKI-associated mitochondrial dysfunction of tubular epithelial cells was investigated using transfection, MTT assay, TUNEL staining, 2',7'-Dichlorodihydrofluorescein diacetate probe assay, Mitosox assay, and JC-1 staining. MTHFD2 and EP300 were upregulated by LPS exposure in NRK-52E cells. LPS increased the acetylation of H3 histone in the MTHFD2 promoter region, and EP300 suppressed the effect of LPS. EP300 ablation inhibited the expression of MTHFD2. MTHFD2 overexpression antagonized LPS-induced viability reduction, apoptosis promotion, reactive oxygen species overproduction, and mitochondrial membrane potential collapse of NRK-52E cells. By contrast, MTHFD2 knockdown and EP300 ablation brought about opposite consequences. Furthermore, MTHFD2 overexpress and EP300 ablation counteracted each other's effect in LPS-exposed NRK-52E cells. EP300-mediated H3 acetylation elevates MTHFD2 expression to reduce mitochondrial dysfunction of tubular epithelial cells in SI-AKI.
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Affiliation(s)
- Weike Hu
- Department of Emergency Medicine, The First Affiliated Hospital of Ningbo University, Ningbo, China
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Pan J, Wu S, Pan Q, Zhang Y, He L, Yao Q, Chen J, Li J, Xu Y. CHAC1 blockade suppresses progression of lung adenocarcinoma by interfering with glucose metabolism via hijacking PKM2 nuclear translocation. Cell Death Dis 2024; 15:728. [PMID: 39368995 PMCID: PMC11455913 DOI: 10.1038/s41419-024-07114-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 09/22/2024] [Accepted: 09/25/2024] [Indexed: 10/07/2024]
Abstract
Patients with lung adenocarcinoma (LUAD) generally have poor prognosis. Abnormal cellular energy metabolism is a hallmark of LUAD. Glutathione-specific gamma-glutamylcyclotransferase 1 (CHAC1) is a member of the γ-glutamylcyclotransferase family and an unfolded protein response pathway regulatory gene. Its biological function and molecular regulatory mechanism, especially regarding energy metabolism underlying LUAD, remain unclear. By utilizing tissue microarray and data from The Cancer Genome Atlas and Gene Expression Omnibus, we found that CHAC1 expression was markedly higher in LUAD tissues than in non-tumor tissues, and was positively correlated with poor prognosis. Phenotypically, CHAC1 overexpression enhanced the proliferation, migration, invasion, tumor sphere formation, and glycolysis ability of LUAD cells, resulting in tumor growth both in vitro and in vivo. Mechanistically, through a shotgun mass spectrometry-based proteomic approach and high-throughput RNA sequencing, we found that CHAC1 acted as a bridge connecting UBA2 and PKM2, enhancing the SUMOylation of PKM2. The SUMOylated PKM2 then transferred from the cytoplasm to the nucleus, activating the expression of glycolysis-related genes and enhancing the Warburg effect. Lastly, E2F Transcription Factor 1 potently activated CHAC1 transcription by directly binding to the CHAC1 promoter in LUAD cells. The results of this study implied that CHAC1 regulates energy metabolism and promotes glycolysis in LUAD progression.
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Affiliation(s)
- Junfan Pan
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China
- Department of Radiation Oncology, Fujian Cancer Hospital, Fuzhou, China
| | - Sixuan Wu
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China
- Department of Radiation Oncology, Fujian Cancer Hospital, Fuzhou, China
| | - Qihong Pan
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China
- Department of Radiation Oncology, Fujian Cancer Hospital, Fuzhou, China
| | - Yuan Zhang
- The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Liu He
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Qiwei Yao
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.
- Department of Radiation Oncology, Fujian Cancer Hospital, Fuzhou, China.
| | - Jinyuan Chen
- The Central Laboratory, Fujian Key Laboratory of Precision Medicine for Cancer, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China.
| | - Jiancheng Li
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.
- Department of Radiation Oncology, Fujian Cancer Hospital, Fuzhou, China.
| | - Yiquan Xu
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.
- Department of Thoracic Oncology, Fujian Cancer Hospital, Fuzhou, China.
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Sun Y, Cui A, Dong H, Nie L, Yue Z, Chen J, Leung WK, Wang J, Wang Q. Intermittent hyperglycaemia induces macrophage dysfunction by extracellular regulated protein kinase-dependent PKM2 translocation in periodontitis. Cell Prolif 2024; 57:e13651. [PMID: 38790140 PMCID: PMC11471441 DOI: 10.1111/cpr.13651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 03/25/2024] [Accepted: 04/11/2024] [Indexed: 05/26/2024] Open
Abstract
Early fluctuations in blood glucose levels increased susceptibility to macrophage dysfunction. However, the underlying pathological mechanisms linking glucose variations and macrophage dysregulation remains elusive. In current study, we established an animal model of transient intermittent hyperglycaemia (TIH) to simulate early fluctuations in blood glucose levels. Our findings revealed that both TIH and diabetic group exhibited more severe periodontal lesions and increased secretion of pro-inflammatory cytokines compared to healthy controls. In immortalized bone marrow-derived macrophages (iBMDMs), phagocytosis and chemotaxis were impaired with transient and lasting hyperglycaemia, accompanied by enhanced glycolysis. We also found that TIH activated pyruvate kinase M2 (PKM2) through the phosphorylation of extracellular regulated protein kinase (ERK) in vivo, particularly at dimeric levels. In macrophage cultured with TIH, PKM2 translocated into the nucleus and involved in the regulating inflammatory genes, including TNF-α, IL-6 and IL-1β. PKM2 translocation and secretion of inflammatory cytokines were attenuated by PD98059, while PKM2 tetramer activator TEPP-46 prevented the formation of dimeric PKM2 in macrophages. Moreover, inhibition of glycolysis alleviated the TIH-induced pro-inflammatory cytokines. In conclusion, our manuscript provides a rationale for understanding how TIH modulates metabolic rewiring and dysfunction in macrophages via ERK-dependent PKM2 nuclear translocation.
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Affiliation(s)
- Yuezhang Sun
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Aimin Cui
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Hao Dong
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Lulingxiao Nie
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Ziqi Yue
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Jiao Chen
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Wai Keung Leung
- Periodontology and Implant Dentistry Division, Faculty of DentistryThe University of Hong KongHong KongChina
| | - Jian Wang
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Qi Wang
- State Key Laboratory of Orval Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of StomatologySichuan UniversityChengduChina
- Sichuan Provincial Engineering Research Center of Oral Biomaterials, Sichuan UniversityChengduChina
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Hu Y, Tang J, Xu Q, Fang Z, Li R, Yang M, Zhao J, Chen X. Role of pyruvate kinase M2 in regulating sepsis (Review). Mol Med Rep 2024; 30:185. [PMID: 39155878 DOI: 10.3892/mmr.2024.13309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 07/29/2024] [Indexed: 08/20/2024] Open
Abstract
Glycolysis occurs in all living organisms as a form of energy supply. Pyruvate kinase M2 (PKM2) is one of the rate‑limiting enzymes in the glycolytic process. PKM2 is considered to serve an important role in several terminal diseases, including sepsis. However, to the best of our knowledge, the specific mechanistic role of PKM2 in sepsis remains to be systematically summarised. Therefore, the present review aims to summarise the roles of PKM2 in sepsis progression. In addition, potential treatment strategies for patients with sepsis are discussed. The present review hopes to lay the groundwork for studying the role of PKM2 and developing therapeutic strategies against metabolic disorders that occur during sepsis.
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Affiliation(s)
- Yifei Hu
- Department of Clinical Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China
| | - Jing Tang
- Department of Clinical Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China
| | - Qiao Xu
- Department of Clinical Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China
| | - Zenghui Fang
- Department of Clinical Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China
| | - Rongqing Li
- Department of Clinical Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225000, P.R. China
| | - Mengxuan Yang
- Department of Clinical Laboratory, School of Laboratory Medicine and Bioengineering, Hangzhou Medical College, Hangzhou, Zhejiang 310000, P.R. China
| | - Jie Zhao
- Department of Clinical Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225000, P.R. China
| | - Xin Chen
- Department of Clinical Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China
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Liu J, Zhou G, Tong Z, Wang X, Liu D. The Values of PDK1 and LDH Levels in Patients with Sepsis and Septic Shock: A Prospective Observational Study. J Inflamm Res 2024; 17:6815-6826. [PMID: 39372591 PMCID: PMC11451472 DOI: 10.2147/jir.s477495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2024] [Accepted: 09/10/2024] [Indexed: 10/08/2024] Open
Abstract
Background Metabolic changing is the significant host stress response during sepsis, but there is increasing evidence that uncontrolled metabolic reprogramming is a contributing factor to sepsis. Nevertheless, its association with outcome in patients with sepsis has been poorly investigated. As the key enzyme of metabolic reprogramming, the clinical value of PDK1 and LDH in patients with sepsis will be investigated in this study. Methods We collected serum from 167 ICU patients within 24 hours of admission for a single-center prospective observational study. The levels of PDK1 and LDH were detected by enzyme-linked adsorption method. Pearson or Spearman coefficient for correlation analysis between PDK1, LDH and clinical indicators. Areas under the ROC curves for evaluation of mortality prediction. Kaplan-Meier survival curve analysis was performed, and Cox proportional hazards model was performed to determine the risk factors for 28-day mortality. Results The PDK1/LDH in the septic shock group was statistically different between both the sepsis group and ICU control group, and had good correlation with ScvO2 and lactate. In predicting 28-day mortality in patients with sepsis, the best AUC was observed for PDK1/LDH, and was higher than the AUC for PDK1, lactate, and SOFA. Additionally, patients with lower PDK1/LDH had markerablely higher 28-day mortality. The multivariate Cox proportional hazards model revealed that PDK1/LDH < 0.1808 were the independent risk factors for 28-day mortality in sepsis. Conclusion The level of PDK1/LDH at admission was markedly decreased in patients with septic shock, which can serve as a novel independent prognostic biomarker for predicting mortality.
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Affiliation(s)
- Jingjing Liu
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Gaosheng Zhou
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Zewen Tong
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Xiaoting Wang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Dawei Liu
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
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Zhang T, Chen L, Kueth G, Shao E, Wang X, Ha T, Williams DL, Li C, Fan M, Yang K. Lactate's impact on immune cells in sepsis: unraveling the complex interplay. Front Immunol 2024; 15:1483400. [PMID: 39372401 PMCID: PMC11449721 DOI: 10.3389/fimmu.2024.1483400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2024] [Accepted: 09/05/2024] [Indexed: 10/08/2024] Open
Abstract
Lactate significantly impacts immune cell function in sepsis and septic shock, transcending its traditional view as just a metabolic byproduct. This review summarizes the role of lactate as a biomarker and its influence on immune cell dynamics, emphasizing its critical role in modulating immune responses during sepsis. Mechanistically, key lactate transporters like MCT1, MCT4, and the receptor GPR81 are crucial in mediating these effects. HIF-1α also plays a significant role in lactate-driven immune modulation. Additionally, lactate affects immune cell function through post-translational modifications such as lactylation, acetylation, and phosphorylation, which alter enzyme activities and protein functions. These interactions between lactate and immune cells are central to understanding sepsis-associated immune dysregulation, offering insights that can guide future research and improve therapeutic strategies to enhance patient outcomes.
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Affiliation(s)
- Tao Zhang
- Department of Biomedical Sciences, James H Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Linjian Chen
- Department of Surgery, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Gatkek Kueth
- James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Emily Shao
- Program in Neuroscience, College of Arts and Science, Vanderbilt University, Nashville, TN, United States
| | - Xiaohui Wang
- Department of Surgery, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
- Center of Excellence in Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Tuanzhu Ha
- Department of Biomedical Sciences, James H Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
- Center of Excellence in Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - David L. Williams
- Department of Biomedical Sciences, James H Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
- Center of Excellence in Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Chuanfu Li
- Department of Biomedical Sciences, James H Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
- Center of Excellence in Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Min Fan
- Department of Biomedical Sciences, James H Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
- Center of Excellence in Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Kun Yang
- Department of Biomedical Sciences, James H Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
- Center of Excellence in Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
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Bao-Yuan H, Shu-Ru L, Le-Xin C, Liang-Liang B, Cheng-Cheng L, Chun-Qi X, Ming-Jun L, Jia-Xin Z, En-Xin Z, Xiao-Jun Z. Shikonin ameliorated LPS-induced acute lung injury in mice via modulating MCU-mediated mitochondrial Ca 2+ and macrophage polarization. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 135:156043. [PMID: 39366155 DOI: 10.1016/j.phymed.2024.156043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 08/28/2024] [Accepted: 09/11/2024] [Indexed: 10/06/2024]
Abstract
BACKGROUND Macrophages play a pivotal role in the development and recovery of acute lung injury (ALI), wherein their phenotypic differentiation and metabolic programming are orchestrated by mitochondria. Specifically, the mitochondrial calcium uniporter (MCU) regulates mitochondrial Ca2+ (mCa2+) uptake and may bridge the metabolic reprogramming and functional regulation of immune cells. However, the precise mechanism on macrophages remains elusive. Shikonin, a natural naphthoquinone, has demonstrated efficacy in mitigating ALI and suppressing glycolysis in macrophages, yet which mechanism remains to be fully elucidated. PURPOSE This study explored whether Shikonin ameliorated ALI via modulating MCU-mediated mCa2+ and macrophage polarization. METHODS This study firstly examined the protective effects of Shikonin on LPS-induced ALI mice, and investigated whether it is depends on macrophage by depleting macrophage using clodronate liposomes. The regulatory effect of Shikonin on macrophage polarization and mitochondrial MCU/Ca2+ signal was testified on RAW264.7 cells, and further validated by knocking-down MCU expression or by using RU360, an MCU inhibitor. Additionally, the crucial role of MCU in the therapeutic effect of Shikonin, along with its regulation on macrophage polarization was validated in mice with LPS-induced ALI under the intervention of RU360. RESULTS Shikonin alleviated LPS-induced mice ALI, down-regulated inflammatory cytokines and inhibited the pro-inflammatory polarization of macrophages. Intravenous injection of clodronate liposomes on mice abolished the protective effects of Shikonin on ALI. On RAW264.7 cells, LPS&IFN decreased the protein expression of MCU, while induced pro-inflammatory polarization and glycolytic metabolism. In contrast, Shikonin increased MCU expression, activated MCU-mediated mCa2+ signal, promoted the polarization of macrophages to anti-inflammatory M2 phenotype, and driven a metabolic shift from glycolysis to oxidative phosphorylation. Either knocking-down MCU expression or pharmacological inhibiting MCU by using RU360 mitigated the effects of Shikonin on Raw 264.7 cells. Furthermore, RU360 counteracted the ameliorative effect of Shikonin on ALI mice. CONCLUSION The current data showed that Shikonin alleviated LPS-induced mice ALI by activating mitochondrial MCU/mCa2+ signal and regulating macrophage metabolism.
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Affiliation(s)
- Huang Bao-Yuan
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China; The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China; Guangdong Province Lingnan Characteristic Hospital Preparation Transformation Engineering Technology Research Center, Guangzhou, China
| | - Lu Shu-Ru
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China; Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Dongguan, China
| | - Chen Le-Xin
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Bai Liang-Liang
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li Cheng-Cheng
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xu Chun-Qi
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li Ming-Jun
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zeng Jia-Xin
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhang En-Xin
- Shenzhen Bao'an Authentic TCM Therapy Hospital, Shenzhen, China.
| | - Zhang Xiao-Jun
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, China.
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Wei Z, Ni X, Cui H, Shu C, Peng Y, Li Y, Liu J. Neurotoxic effects of triclosan in adolescent mice: Pyruvate kinase M2 dimer regulated Signal transducer and activator of transcription 3 phosphorylation mediated microglia activation and neuroinflammation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173739. [PMID: 38839007 DOI: 10.1016/j.scitotenv.2024.173739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/27/2024] [Accepted: 06/01/2024] [Indexed: 06/07/2024]
Abstract
Triclosan (TCS), a commonly used antibacterial agent, is associated with various harmful effects on mammalian neurodevelopment, particularly when exposed prenatally. This study investigated the impact of long-term exposure to TCS on the prefrontal cortex development in adolescent mice. We evaluated the motor ability, motor coordination, and anxiety behavior of mice using open field tests (OFT) and elevated cross maze tests (EPM). An increase in movement distance, number of passes through the central area, and open arm retention time was observed in mice treated with TCS. Hematoxylin eosin staining and Nissl staining also showed significant adverse reactions in the brain tissue of TCS-exposed group. TCS induced microglia activation and increased inflammatory factors expression in the prefrontal cortex. TCS also increased the expression of pyruvate kinase M2 (PKM2), thereby elevating the levels of PKM2 dimer, which entered the nucleus. Treatment with TEPP46 (PKM2 dimer nuclear translocation inhibitor) blocked the expression of inflammatory factors induced by TCS. TCS induced the phosphorylation of nuclear signal transducer and activator of transcription 3 (STAT3) in vivo and in vitro, upregulating the levels of inflammatory cytokines. The results also demonstrated the binding of PKM2 to STAT3, which promoted STAT3 phosphorylation at the Tyr705 site, thereby regulating the expression of inflammatory factors. These findings highlight the role of PKM2-regulated STAT3 phosphorylation in TCS-induced behavioral disorders in adolescents and propose a reliable treatment target for TCS.
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Affiliation(s)
- Ziyun Wei
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang 110122, PR China
| | - Xiao Ni
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang 110122, PR China
| | - He Cui
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang 110122, PR China
| | - Chang Shu
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang 110122, PR China
| | - Yuxuan Peng
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang 110122, PR China
| | - Yunwei Li
- Department of General Surgery, Colorectal Surgery, The First Hospital of China Medical University, Shenyang 110001, Liaoning, PR China.
| | - Jieyu Liu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, PR China; Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang 110122, PR China.
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10
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Li H, Wu Y, Ma Y, Liu X. Interference with ENO2 promotes ferroptosis and inhibits glycolysis in clear cell renal cell carcinoma by regulating Hippo‑YAP1 signaling. Oncol Lett 2024; 28:443. [PMID: 39091581 PMCID: PMC11292466 DOI: 10.3892/ol.2024.14576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/12/2024] [Indexed: 08/04/2024] Open
Abstract
Glycolytic enzyme enolase 2 (ENO2) is dysregulated in various cancer types. Nevertheless, the role and underlying mechanism of ENO2 in clear cell renal cell carcinoma (ccRCC) remain unclear. Therefore, the current study investigated the effect and mechanism of ENO2 in ccRCC. ENO2 expression in a ccRCC cell line was assessed using reverse transcription-quantitative PCR and western blotting. Analysis of glycolysis was performed by estimating the extracellular acidification rate, lactic acid concentration, glucose uptake and the expression of glucose transporter 1, pyruvate kinase muscle isozyme M2 and hexokinase 2. Moreover, ferroptosis was assessed by detecting the level of total iron, lipid peroxide, reactive oxygen species and the expression of ferroptosis-related protein. In addition, mitochondrial function was assessed using JC-1 staining and detection kits. The results indicated that ENO2 is expressed at high levels in ccRCC cell lines, and interference with ENO2 expression inhibits glycolysis, promotes ferroptosis and affects mitochondrial function in ccRCC cells. Further investigation demonstrated that interference with ENO2 expression affected ferroptosis levels in ccRCC cells by inhibiting the glycolysis process. Mechanistically, the present results indicated that ENO2 may affect ferroptosis, glycolysis and mitochondrial functions by regulating Hippo-yes-associated protein 1 (YAP1) signaling in ccRCC cells. In conclusion, the present study showed that ENO2 affects ferroptosis, glycolysis and mitochondrial functions in ccRCC cells by regulating Hippo-YAP1 signaling, hence demonstrating its potential as a therapeutic target in ccRCC.
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Affiliation(s)
- Hu Li
- Department of Urology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yanni Wu
- Department of Medical Technology, Heze Jiazheng Vocational College, Heze, Shandong 274300, P.R. China
| | - Yong Ma
- Department of Urology, Shanxian Central Hospital, Affiliated Huxi Hospital of Jining Medical University, Heze, Shandong 274300, P.R. China
| | - Xiaoqiang Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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11
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Jiajun W, Kaifeng G, Jing Z. Urinary PKM2, a marker predicating acute kidney injury in patients with sepsis. Int Urol Nephrol 2024; 56:3039-3045. [PMID: 38635124 DOI: 10.1007/s11255-024-04054-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
PURPOSE Acute kidney injury (AKI) is a complication commonly occurred in patients with sepsis, and AKI has become the leading cause associated with mortality. PKM2, as a rate-limiting enzyme of glycolysis, was considered to be involved in AKI in vitro and animal models. However, there have been no studies reported on the expression of PKM2 in humans and its association with AKI. METHODS A retrospective study including 57 patients (35 males and 22 females) that were admitted into hospital in 2019 was carried out in our research. The basic characteristics and clinical parameters of each patient were collected from patients' medical records. We assessed changes in the expression of serum and urinary PKM2 using ELISA and its association with clinical manifestations in patients with sepsis through correlation analysis. Besides, ROC analysis was applied for evaluating the role of PKM2 in predicting AKI and death rate. RESULTS Urinary PKM2 is obviously increased in patients with sepsis-associated AKI (P < 0.05), while no significant change was found in the expression of serum PKM2. Moreover, the expression of urinary PKM2 is positively correlated with serum creatinine (r=0.577, P < 0.01) and blood-urea-nitrogen (r=0.531, P<0.01). In addition, it is negatively correlated with glomerular filtration rate (r=-0.583, P<0.01). Besides, ROC analysis indicated that urinary PKM2 could be a predictor of AKI in patients with sepsis (AUC-ROC, 0.819; SE, 0.086, P = 0.004, 95% CI 0.651-0.986). CONCLUSIONS Urinary PKM2 could be a marker predicting acute kidney injury in patients with sepsis.
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Affiliation(s)
- Wu Jiajun
- Department of Emergency, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guo Kaifeng
- Department of Endocrinology and Metabolism, Minhang Hospital, Fudan University, Shanghai, China
| | - Zhou Jing
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 HaiNing Road, Shanghai, 200080, China.
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12
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Liu C, Wei W, Huang Y, Fu P, Zhang L, Zhao Y. Metabolic reprogramming in septic acute kidney injury: pathogenesis and therapeutic implications. Metabolism 2024; 158:155974. [PMID: 38996912 DOI: 10.1016/j.metabol.2024.155974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 07/06/2024] [Accepted: 07/09/2024] [Indexed: 07/14/2024]
Abstract
Acute kidney injury (AKI) is a frequent and severe complication of sepsis and is characterized by significant mortality and morbidity. However, the pathogenesis of septic acute kidney injury (S-AKI) remains elusive. Metabolic reprogramming, which was originally referred to as the Warburg effect in cancer, is strongly related to S-AKI. At the onset of sepsis, both inflammatory cells and renal parenchymal cells, such as macrophages, neutrophils and renal tubular epithelial cells, undergo metabolic shifts toward aerobic glycolysis to amplify proinflammatory responses and fortify cellular resilience to septic stimuli. As the disease progresses, these cells revert to oxidative phosphorylation, thus promoting anti-inflammatory reactions and enhancing functional restoration. Alterations in mitochondrial dynamics and metabolic reprogramming are central to the energetic changes that occur during S-AKI. In this review, we summarize the current understanding of the pathogenesis of metabolic reprogramming in S-AKI, with a focus on each cell type involved. By identifying relevant key regulatory factors, we also explored potential metabolic reprogramming-related therapeutic targets for the management of S-AKI.
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Affiliation(s)
- Caihong Liu
- Department of Nephrology, Institute of Kidney Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Wei Wei
- Department of Nephrology, Institute of Kidney Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Yongxiu Huang
- Department of Nephrology, Institute of Kidney Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Ping Fu
- Department of Nephrology, Institute of Kidney Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Ling Zhang
- Department of Nephrology, Institute of Kidney Diseases, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Yuliang Zhao
- Department of Nephrology, Institute of Kidney Diseases, West China Hospital of Sichuan University, Chengdu 610041, China.
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13
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Calì C, Cantando I, Veloz Castillo MF, Gonzalez L, Bezzi P. Metabolic Reprogramming of Astrocytes in Pathological Conditions: Implications for Neurodegenerative Diseases. Int J Mol Sci 2024; 25:8922. [PMID: 39201607 PMCID: PMC11354244 DOI: 10.3390/ijms25168922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 08/08/2024] [Accepted: 08/14/2024] [Indexed: 09/02/2024] Open
Abstract
Astrocytes play a pivotal role in maintaining brain energy homeostasis, supporting neuronal function through glycolysis and lipid metabolism. This review explores the metabolic intricacies of astrocytes in both physiological and pathological conditions, highlighting their adaptive plasticity and diverse functions. Under normal conditions, astrocytes modulate synaptic activity, recycle neurotransmitters, and maintain the blood-brain barrier, ensuring a balanced energy supply and protection against oxidative stress. However, in response to central nervous system pathologies such as neurotrauma, stroke, infections, and neurodegenerative diseases like Alzheimer's and Huntington's disease, astrocytes undergo significant morphological, molecular, and metabolic changes. Reactive astrocytes upregulate glycolysis and fatty acid oxidation to meet increased energy demands, which can be protective in acute settings but may exacerbate chronic inflammation and disease progression. This review emphasizes the need for advanced molecular, genetic, and physiological tools to further understand astrocyte heterogeneity and their metabolic reprogramming in disease states.
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Affiliation(s)
- Corrado Calì
- Department of Neuroscience “Rita Levi Montalcini”, University of Turin, 10124 Turin, Italy;
- Neuroscience Institute Cavalieri Ottolenghi, 10143 Orbassano, Italy
| | - Iva Cantando
- Department of Fundamental Neurosciences (DNF), University of Lausanne (UNIL), 1005 Lausanne, Switzerland; (I.C.); (L.G.)
| | - Maria Fernanda Veloz Castillo
- Department of Neuroscience “Rita Levi Montalcini”, University of Turin, 10124 Turin, Italy;
- Neuroscience Institute Cavalieri Ottolenghi, 10143 Orbassano, Italy
- Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Laurine Gonzalez
- Department of Fundamental Neurosciences (DNF), University of Lausanne (UNIL), 1005 Lausanne, Switzerland; (I.C.); (L.G.)
| | - Paola Bezzi
- Department of Fundamental Neurosciences (DNF), University of Lausanne (UNIL), 1005 Lausanne, Switzerland; (I.C.); (L.G.)
- Department of Physiology and Pharmacology, University of Rome Sapienza, 00185 Rome, Italy
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14
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Zhang X, Lei Y, Zhou H, Liu H, Xu P. The Role of PKM2 in Multiple Signaling Pathways Related to Neurological Diseases. Mol Neurobiol 2024; 61:5002-5026. [PMID: 38157121 DOI: 10.1007/s12035-023-03901-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Pyruvate kinase M2 (PKM2) is a key rate-limiting enzyme in glycolysis. It is well known that PKM2 plays a vital role in the proliferation of tumor cells. However, PKM2 can also exert its biological functions by mediating multiple signaling pathways in neurological diseases, such as Alzheimer's disease (AD), cognitive dysfunction, ischemic stroke, post-stroke depression, cerebral small-vessel disease, hypoxic-ischemic encephalopathy, traumatic brain injury, spinal cord injury, Parkinson's disease (PD), epilepsy, neuropathic pain, and autoimmune diseases. In these diseases, PKM2 can exert various biological functions, including regulation of glycolysis, inflammatory responses, apoptosis, proliferation of cells, oxidative stress, mitochondrial dysfunction, or pathological autoimmune responses. Moreover, the complexity of PKM2's biological characteristics determines the diversity of its biological functions. However, the role of PKM2 is not entirely the same in different diseases or cells, which is related to its oligomerization, subcellular localization, and post-translational modifications. This article will focus on the biological characteristics of PKM2, the regulation of PKM2 expression, and the biological role of PKM2 in neurological diseases. With this review, we hope to have a better understanding of the molecular mechanisms of PKM2, which may help researchers develop therapeutic strategies in clinic.
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Affiliation(s)
- Xiaoping Zhang
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yihui Lei
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Hongyan Zhou
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Haijun Liu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ping Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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15
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Hokkoku D, Sasaki K, Kobayashi S, Shimbo T, Kitayama T, Yamazaki S, Yamamoto Y, Ouchi Y, Imamura H, Kado T, Toya K, Fujii W, Iwagami Y, Yamada D, Tomimaru Y, Noda T, Takahashi H, Tamai K, Doki Y, Eguchi H. High-mobility group box 1 fragment ameliorates chronic pancreatitis induced by caerulein in mice. J Gastroenterol 2024; 59:744-757. [PMID: 38727823 DOI: 10.1007/s00535-024-02112-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 04/26/2024] [Indexed: 07/29/2024]
Abstract
BACKGROUND Chronic pancreatitis (CP) is a progressive disease characterized by pancreatic fibrosis for which effective treatment options are lacking. Mesenchymal stem cells (MSCs) have shown potential for fibrosis treatment but face limitations in clinical application. The high-mobility group box 1 (HMGB1) fragment mobilizes MSCs from bone marrow into the blood and has emerged as a promising therapeutic agent for tissue regeneration in various pathological conditions. The aim of this study was to investigate the potential therapeutic effects of systemic administration of the HMGB1 fragment in a mouse model of CP. METHODS A caerulein-induced CP mouse model was used, and the HMGB1 fragment was administered by tail vein injection. Parameters such as body weight, pancreatic tissue damage, fibrosis, inflammatory cytokine expression, and collagen-related gene expression were evaluated using various assays, including immunohistochemistry, real-time PCR, serum analysis, and single-cell transcriptome analysis. And the migration of MSCs to the pancreas was evaluated using the parabiosis model. RESULTS Administration of the HMGB1 fragment was associated with significant improvements in pancreatic tissue damage and fibrosis. It suppressed the expression of inflammatory cytokines and activated platelet-derived growth factor receptor-α+ MSCs, leading to their accumulation in the pancreas. The HMGB1 fragment also shifted gene expression patterns associated with pancreatic fibrosis toward those of the normal pancreas. Systemic administration of the HMGB1 fragment demonstrated therapeutic efficacy in attenuating pancreatic tissue damage and fibrosis in a CP mouse model. CONCLUSION These findings highlight the potential of the HMGB1 fragment as a therapeutic target for the treatment of CP.
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Affiliation(s)
- Daiki Hokkoku
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Kazuki Sasaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Shogo Kobayashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan.
| | - Takashi Shimbo
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- StemRIM Institute of Regeneration-Inducing Medicine, Osaka University, Suita, Osaka, Japan
| | - Tomomi Kitayama
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- StemRIM Inc, Ibaraki, Osaka, Japan
| | - Sho Yamazaki
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- StemRIM Inc, Ibaraki, Osaka, Japan
| | - Yukari Yamamoto
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- StemRIM Institute of Regeneration-Inducing Medicine, Osaka University, Suita, Osaka, Japan
| | - Yuya Ouchi
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- StemRIM Institute of Regeneration-Inducing Medicine, Osaka University, Suita, Osaka, Japan
| | - Hiroki Imamura
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Takeshi Kado
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Keisuke Toya
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Wataru Fujii
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Yoshifumi Iwagami
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Daisaku Yamada
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Yoshito Tomimaru
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Takehiro Noda
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Hidenori Takahashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Katsuto Tamai
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
| | - Hidetoshi Eguchi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka E-2, Suita, Osaka, 565-0871, Japan
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16
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Ya X, Liu C, Ma L, Ge P, Xu X, Zheng Z, Mou S, Wang R, Zhang Q, Ye X, Zhang D, Zhang Y, Wang W, Li H, Zhao J. Single-cell atlas of peripheral blood by CyTOF revealed peripheral blood immune cells metabolic alterations and neutrophil changes in intracranial aneurysm rupture. MedComm (Beijing) 2024; 5:e637. [PMID: 39015556 PMCID: PMC11247334 DOI: 10.1002/mco2.637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 05/12/2024] [Accepted: 05/30/2024] [Indexed: 07/18/2024] Open
Abstract
Previous studies have found that the peripheral immune environment is closely related to the occurrence and development of intracranial aneurysms. However, it remains unclear how the metabolism of peripheral blood mononuclear cells (PBMCs) and the composition of polymorphonuclear leukocytes (PMNs) changes in the process of intracranial aneurysm rupture. This study utilized cytometry by time of flight technology to conduct single-cell profiling analysis of PBMCs and PMNs from 72 patients with IAs. By comparing the expression differences of key metabolic enzymes in PBMCs between patients with ruptured intracranial aneurysms (RIAs) and unruptured intracranial aneurysms, we found that most PBMCs subsets from RIA group showed upregulation of rate-limiting enzymes related to the glycolytic pathway. By comparing the composition of PMNs, it was found that the proinflammatory CD101+HLA DR+ subsets were increased in the RIA group, accompanied by a decrease in the anti-inflammatory polymorphonuclear myeloid-derived suppressor cells. In conclusion, this study showed the changes in the peripheral immune profile of RIAs, which is helpful for our understanding of the mechanisms underlying peripheral changes and provides a direction for future related research.
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Affiliation(s)
- Xiaolong Ya
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Chenglong Liu
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Long Ma
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Peicong Ge
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Xiaoxue Xu
- Department of Core Facility CenterCapital Medical UniversityBeijingChina
| | - Zhiyao Zheng
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- Department of Neurosurgery, Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Siqi Mou
- Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
| | - Rong Wang
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Qian Zhang
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Xun Ye
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Dong Zhang
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- Department of NeurosurgeryBeijing HospitalBeijingChina
| | - Yan Zhang
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Wenjing Wang
- Beijing Institute of Hepatology, Beijing YouAn HospitalCapital Medical UniversityBeijingChina
| | - Hao Li
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
| | - Jizong Zhao
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesBeijingChina
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17
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Wang M, Flaswinkel H, Joshi A, Napoli M, Masgrau-Alsina S, Kamper JM, Henne A, Heinz A, Berouti M, Schmacke NA, Hiller K, Kremmer E, Wefers B, Wurst W, Sperandio M, Ruland J, Fröhlich T, Hornung V. Phosphorylation of PFKL regulates metabolic reprogramming in macrophages following pattern recognition receptor activation. Nat Commun 2024; 15:6438. [PMID: 39085210 PMCID: PMC11291651 DOI: 10.1038/s41467-024-50104-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Accepted: 07/01/2024] [Indexed: 08/02/2024] Open
Abstract
Innate immune responses are linked to key metabolic pathways, yet the proximal signaling events that connect these systems remain poorly understood. Here we show that phosphofructokinase 1, liver type (PFKL), a rate-limiting enzyme of glycolysis, is phosphorylated at Ser775 in macrophages following several innate stimuli. This phosphorylation increases the catalytic activity of PFKL, as shown by biochemical assays and glycolysis monitoring in cells expressing phosphorylation-defective PFKL variants. Using a genetic mouse model in which PFKL Ser775 phosphorylation cannot take place, we observe that upon activation, glycolysis in macrophages is lower than in the same cell population of wild-type animals. Consistent with their higher glycolytic activity, wild-type cells have higher levels of HIF1α and IL-1β than PfklS775A/S775A after LPS treatment. In an in vivo inflammation model, PfklS775A/S775A mice show reduced levels of MCP-1 and IL-1β. Our study thus identifies a molecular link between innate immune activation and early induction of glycolysis.
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Affiliation(s)
- Meiyue Wang
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Heinrich Flaswinkel
- Faculty of Biology, Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Abhinav Joshi
- TranslaTUM, Center of Translational Cancer Research, Technische Universität München, Munich, Germany
- Institute of Clinical Chemistry and Pathobiochemistry, School of Medicine, Technische Universität München, Munich, Germany
| | - Matteo Napoli
- Faculty of Medicine Biomedical Center, Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Sergi Masgrau-Alsina
- Faculty of Medicine Biomedical Center, Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Julia M Kamper
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Antonia Henne
- Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Braunschweig, Germany
| | - Alexander Heinz
- Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Braunschweig, Germany
| | - Marleen Berouti
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Niklas A Schmacke
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Karsten Hiller
- Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Braunschweig, Germany
| | - Elisabeth Kremmer
- Faculty of Biology, Human Biology and BioImaging, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Benedikt Wefers
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
- TUM School of Life Sciences, Technische Universität München, Freising-Weihenstephan, Germany
- German Center for Neurodegenerative Diseases (DZNE) site Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
- TUM School of Life Sciences, Technische Universität München, Freising-Weihenstephan, Germany
- German Center for Neurodegenerative Diseases (DZNE) site Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Markus Sperandio
- Faculty of Medicine Biomedical Center, Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Jürgen Ruland
- TranslaTUM, Center of Translational Cancer Research, Technische Universität München, Munich, Germany
- Institute of Clinical Chemistry and Pathobiochemistry, School of Medicine, Technische Universität München, Munich, Germany
| | - Thomas Fröhlich
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Veit Hornung
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany.
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18
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Radushev V, Karkossa I, Berg J, von Bergen M, Engelmann B, Rolle-Kampczyk U, Blüher M, Wagner U, Schubert K, Rossol M. Dysregulated cytokine and oxidative response in hyper-glycolytic monocytes in obesity. Front Immunol 2024; 15:1416543. [PMID: 39050851 PMCID: PMC11266186 DOI: 10.3389/fimmu.2024.1416543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 06/21/2024] [Indexed: 07/27/2024] Open
Abstract
Introduction Obesity is associated with a plethora of health complications, including increased susceptibility to infections or decreased vaccine efficacy, partly due to dysregulated immune responses. Monocytes play a crucial role in innate immunity, yet their functional alterations in obesity remain poorly understood. Methods Here, we employed proteomic and metabolomic analyses to investigate monocyte characteristics in individuals with overweight, obesity, impaired glucose tolerance (IGT), and type 2 diabetes (T2D), compared to lean donors. Results and discussion Our results revealed distinct molecular signatures in monocytes from individuals with obesity, with significant alterations in pathways related to metabolism, cellular migration, and phagocytosis. Moreover, LPS-induced activation of monocytes unveiled heightened metabolic reprogramming towards glycolysis in subjects with obesity accompanied by dysregulated cytokine responses and elevated oxidative stress. Additionally, monocytes from donors with obesity exhibited increased lipid droplet accumulation. These findings shed light on the immunometabolic dysregulation underlying obesity-associated immune dysfunction, highlighting potential targets for therapeutic intervention.
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Affiliation(s)
- Veselina Radushev
- Division of Rheumatology, Department of Endocrinology, Nephrology, Rheumatology, Leipzig University, Leipzig, Germany
| | - Isabel Karkossa
- Department of Molecular Toxicology, Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
| | - Janina Berg
- Molecular Immunology, Faculty of Health Sciences, BTU Cottbus-Senftenberg, Senftenberg, Germany
| | - Martin von Bergen
- Department of Molecular Toxicology, Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
- Institute for Biochemistry, Faculty of Life Sciences, Leipzig University, Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Beatrice Engelmann
- Department of Molecular Toxicology, Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
| | - Ulrike Rolle-Kampczyk
- Department of Molecular Toxicology, Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
| | - Ulf Wagner
- Division of Rheumatology, Department of Endocrinology, Nephrology, Rheumatology, Leipzig University, Leipzig, Germany
| | - Kristin Schubert
- Department of Molecular Toxicology, Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
| | - Manuela Rossol
- Division of Rheumatology, Department of Endocrinology, Nephrology, Rheumatology, Leipzig University, Leipzig, Germany
- Molecular Immunology, Faculty of Health Sciences, BTU Cottbus-Senftenberg, Senftenberg, Germany
- Faculty of Environment and Natural Sciences, BTU Cottbus-Senftenberg, Senftenberg, Germany
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19
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Liu S, Yang T, Jiang Q, Zhang L, Shi X, Liu X, Li X. Lactate and Lactylation in Sepsis: A Comprehensive Review. J Inflamm Res 2024; 17:4405-4417. [PMID: 39006496 PMCID: PMC11244620 DOI: 10.2147/jir.s459185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 05/02/2024] [Indexed: 07/16/2024] Open
Abstract
Sepsis is a disorder of the immune response to infection or infectious factors with high morbidity and mortality in clinical settings. The lactylation of lysine residues, fueled by lactate, plays a pivotal role in its pathophysiology. In conducting a literature review on sepsis-related research, we employed a systematic approach to ensure comprehensiveness and accuracy. Initially, we conducted an extensive literature search through the PubMed database, utilizing a range of keywords including "sepsis", "lactate", "lactylation", and "epigenetic modification". The aim was to capture the most recent research related to the pathophysiological mechanisms of sepsis, metabolic disorders, and the role of lactylation. The results of the literature review revealed a close link between sepsis and metabolic dysfunction, particularly the pivotal role of lactylation in regulating immune responses and inflammatory processes. Lactate, not only an energy metabolic byproduct produced during glycolysis, affects the activity of various proteins, including those involved in immune regulation and cell signaling, through lactylation. In the context of sepsis, changes in the levels of lactylation may be closely associated with the severity and prognosis of the disease. In summary, lactylation, as an emerging type of epigenetic modification, provides a new perspective for the diagnosis and treatment of sepsis. Future research needs to further elucidate the exact mechanisms of lactylation in sepsis and explore its potential as a therapeutic target.
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Affiliation(s)
- Sijia Liu
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People’s Republic of China
- Key Laboratory for Biochemistry and Molecular Pharmacology of Chongqing, Chongqing, People’s Republic of China
| | - Ting Yang
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People’s Republic of China
- Key Laboratory for Biochemistry and Molecular Pharmacology of Chongqing, Chongqing, People’s Republic of China
| | - Qingsong Jiang
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People’s Republic of China
- Key Laboratory for Biochemistry and Molecular Pharmacology of Chongqing, Chongqing, People’s Republic of China
| | - Liang Zhang
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People’s Republic of China
- Key Laboratory for Biochemistry and Molecular Pharmacology of Chongqing, Chongqing, People’s Republic of China
| | - Xinhui Shi
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People’s Republic of China
- Key Laboratory for Biochemistry and Molecular Pharmacology of Chongqing, Chongqing, People’s Republic of China
| | - Xin Liu
- Medical Research Center, Southwest Hospital, Third Military Medical University, Chongqing, People’s Republic of China
| | - Xiaoli Li
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, People’s Republic of China
- Key Laboratory for Biochemistry and Molecular Pharmacology of Chongqing, Chongqing, People’s Republic of China
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20
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Liang G, Hu JY, Liu RJ, Chao YP, Hu YF, Zheng H, Pan XY, Li YJ, Gong YH, Lin C, Lin JH, Wang JD, Li TX, Pan JP, Guo DY. α-Ketoglutarate plays an inflammatory inhibitory role by regulating scavenger receptor class a expression through N6-methyladenine methylation during sepsis. Eur J Immunol 2024:e2350655. [PMID: 38973083 DOI: 10.1002/eji.202350655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 07/09/2024]
Abstract
Sepsis arises from an uncontrolled inflammatory response triggered by infection or stress, accompanied by alteration in cellular energy metabolism, and a strong correlation exists between these factors. Alpha-ketoglutarate (α-KG), an intermediate product of the TCA cycle, has the potential to modulate the inflammatory response and is considered a crucial link between energy metabolism and inflammation. The scavenger receptor (SR-A5), a significant pattern recognition receptor, assumes a vital function in anti-inflammatory reactions. In the current investigation, we have successfully illustrated the ability of α-KG to mitigate inflammatory factors in the serum of septic mice and ameliorate tissue damage. Additionally, α-KG has been shown to modulate metabolic reprogramming and macrophage polarization. Moreover, our findings indicate that the regulatory influence of α-KG on sepsis is mediated through SR-A5. We also elucidated the mechanism by which α-KG regulates SR-A5 expression and found that α-KG reduced the N6-methyladenosine level of macrophages by up-regulating the m6A demethylase ALKBH5. α-KG plays a crucial role in inhibiting inflammation by regulating SR-A5 expression through m6A demethylation during sepsis. The outcomes of this research provide valuable insights into the relationship between energy metabolism and inflammation regulation, as well as the underlying molecular regulatory mechanism.
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Affiliation(s)
- Gang Liang
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
- Zhejiang University school of medicine, Hangzhou, P. R. China
| | - Jia-Yan Hu
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Rou-Jun Liu
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yu-Peng Chao
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yi-Fan Hu
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Hong Zheng
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Xin-Yu Pan
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yuan-Jing Li
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Yang-Hui Gong
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Chi Lin
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Jia-Hao Lin
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Jia-Dong Wang
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Tong-Xin Li
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
| | - Jian-Ping Pan
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
- Institute of Translational Medicine, Hangzhou City University, Hangzhou, P.R. China
| | - Dong-Yang Guo
- Department of Clinical Medicine, Hangzhou City University School of Medicine, Hangzhou, P.R. China
- Institute of Translational Medicine, Hangzhou City University, Hangzhou, P.R. China
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21
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Zhang L, Wu Z, Qiu X, Zhang J, Cheng SC. Glutamate oxaloacetate transaminase 1 is dispensable in macrophage differentiation and anti-pathogen response. Commun Biol 2024; 7:817. [PMID: 38965342 PMCID: PMC11224350 DOI: 10.1038/s42003-024-06479-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 06/21/2024] [Indexed: 07/06/2024] Open
Abstract
Macrophages play a pivotal role in orchestrating the immune response against pathogens. While the intricate interplay between macrophage activation and metabolism remains a subject of intense investigation, the role of glutamate oxaloacetate transaminase 1 (Got1) in this context has not been extensively assessed. Here, we investigate the impact of Got1 on macrophage polarization and function, shedding light on its role in reactive oxygen species (ROS) production, pathogen defense, and immune paralysis. Using genetically modified mouse models, including both myeloid specific knockout and overexpression, we comprehensively demonstrate that Got1 depletion leads to reduced ROS production in macrophages. Intriguingly, this impairment in ROS generation does not affect the resistance of Got1 KO mice to pathogenic challenges. Furthermore, Got1 is dispensable for M2 macrophage differentiation and does not influence the onset of LPS-induced immune paralysis. Our findings underscore the intricate facets of macrophage responses, suggesting that Got1 is dispensable in discrete immunological processes.
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Affiliation(s)
- Lishan Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Science, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Zhengyi Wu
- State Key Laboratory of Cellular Stress Biology, School of Life Science, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Xuanhui Qiu
- State Key Laboratory of Cellular Stress Biology, School of Life Science, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Jia Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Science, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Shih-Chin Cheng
- State Key Laboratory of Cellular Stress Biology, School of Life Science, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China.
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22
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Liu J, Wang Y, Zeng L, Yu C, Kang R, Klionsky DJ, Jiang J, Tang D. Extracellular NCOA4 is a mediator of septic death by activating the AGER-NFKB pathway. Autophagy 2024:1-16. [PMID: 38916095 DOI: 10.1080/15548627.2024.2372215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 06/21/2024] [Indexed: 06/26/2024] Open
Abstract
Sepsis, a life-threatening condition resulting from a dysregulated response to pathogen infection, poses a significant challenge in clinical management. Here, we report a novel role for the autophagy receptor NCOA4 in the pathogenesis of sepsis. Activated macrophages and monocytes secrete NCOA4, which acts as a mediator of septic death in mice. Mechanistically, lipopolysaccharide, a major component of the outer membrane of Gram-negative bacteria, induces NCOA4 secretion through autophagy-dependent lysosomal exocytosis mediated by ATG5 and MCOLN1. Moreover, bacterial infection with E. coli or S. enterica leads to passive release of NCOA4 during GSDMD-mediated pyroptosis. Upon release, extracellular NCOA4 triggers the activation of the proinflammatory transcription factor NFKB/NF-κB by promoting the degradation of NFKBIA/IκB molecules. This process is dependent on the pattern recognition receptor AGER, rather than TLR4. In vivo studies employing endotoxemia and polymicrobial sepsis mouse models reveal that a monoclonal neutralizing antibody targeting NCOA4 or AGER delays animal death, protects against organ damage, and attenuates systemic inflammation. Furthermore, elevated plasma NCOA4 levels in septic patients, particularly in non-survivors, correlate positively with the sequential organ failure assessment score and concentrations of lactate and proinflammatory mediators, such as TNF, IL1B, IL6, and HMGB1. These findings demonstrate a previously unrecognized role of extracellular NCOA4 in inflammation, suggesting it as a potential therapeutic target for severe infectious diseases. Abbreviation: BMDMs: bone marrow-derived macrophages; BUN: blood urea nitrogen; CLP: cecal ligation and puncture; ELISA: enzyme-linked immunosorbent assay; LPS: lipopolysaccharide; NO: nitric oxide; SOFA: sequential organ failure assessment.
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Affiliation(s)
- Jiao Liu
- DAMP Laboratory, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yichun Wang
- DAMP Laboratory, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Critical Care Medicine, The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ling Zeng
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Chongqing, China
| | - Chunhua Yu
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Daniel J Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Jianxin Jiang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Chongqing, China
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
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23
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Vizuete AFK, Gonçalves CA. Is Methylglyoxal a Potential Biomarker for the Warburg Effect Induced by the Lipopolysaccharide Neuroinflammation Model? Neurochem Res 2024; 49:1823-1837. [PMID: 38727985 DOI: 10.1007/s11064-024-04142-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/26/2024] [Accepted: 05/02/2024] [Indexed: 06/02/2024]
Abstract
Methylglyoxal (MG) is considered a classical biomarker of diabetes mellitus and its comorbidities. However, a role for this compound in exacerbated immune responses, such as septicemia, is being increasingly observed and requires clarification, particularly in the context of neuroinflammatory responses. Herein, we used two different approaches (in vivo and acute hippocampal slice models) to investigate MG as a biomarker of neuroinflammation and the neuroimmunometabolic shift to glycolysis in lipopolysaccharide (LPS) inflammation models. Our data reinforce the hypothesis that LPS-induced neuroinflammation stimulates the cerebral innate immune response by increasing IL-1β, a classical pro-inflammatory cytokine, and the astrocyte reactive response, via elevating S100B secretion and GFAP levels. Acute neuroinflammation promotes an early neuroimmunometabolic shift to glycolysis by elevating glucose uptake, lactate release, PFK1, and PK activities. We observed high serum and cerebral MG levels, in association with a reduction in glyoxalase 1 detoxification activity, and a close correlation between serum and hippocampus MG levels with the systemic and neuroinflammatory responses to LPS. Findings strongly suggest a role for MG in immune responses.
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Affiliation(s)
- Adriana Fernanda Kuckartz Vizuete
- Laboratory of Calcium-Binding Proteins in the CNS, Department of Biochemistry, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS) Ramio Barcelos, 2600-Anexo, Porto Alegre, RS, 90035-003, Brazil.
- Pos Graduate Program in Biochemistry, Institute of Basic Health Sciences, UFRGS, Porto Alegre, RS, Brazil.
| | - Carlos-Alberto Gonçalves
- Laboratory of Calcium-Binding Proteins in the CNS, Department of Biochemistry, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS) Ramio Barcelos, 2600-Anexo, Porto Alegre, RS, 90035-003, Brazil
- Pos Graduate Program in Biochemistry, Institute of Basic Health Sciences, UFRGS, Porto Alegre, RS, Brazil
- Department of Biochemistry, Institute of Basic Health Sciences, UFRGS, Porto Alegre, RS, Brazil
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24
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Dai S, Ji J, Li R, Gao L, He X. Stellate Ganglion Block Attenuates LPS-Induced Acute Lung Injury by Activating Sirt3 Regulation of Oxidative Stress and Inflammation. Biomedicines 2024; 12:1148. [PMID: 38927355 PMCID: PMC11200983 DOI: 10.3390/biomedicines12061148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/03/2024] [Accepted: 05/12/2024] [Indexed: 06/28/2024] Open
Abstract
Stellate ganglion blocks (SGBs) has been applied in clinics to alleviate pain-related syndromes for almost a century. In recent years, it has been reported that SGB can attenuate acute lung injury (ALI) in animals. However, the details of these molecular mechanisms remain complex and unclear. In this study, rats were randomly divided into four groups: group C (receiving no treatment), group NS (receiving the intratracheal instillation of normal saline), group L (receiving the intratracheal instillation of LPS) and group LS (receiving SGB after the intratracheal instillation of LPS). The pathological damage of lung tissue, arterial blood gases, the differentiation of alveolar macrophages (AMs) and inflammatory cytokines (IL-1β, IL-6, IL-10) were detected. Furthermore, the oxidative stress indexes (ROS, CYP-D, T-SOD, Mn-SOD and CAT) in serum and the levels of Sirt3 signaling-associated proteins (JAK2/STAT3, NF-κb p65, CIRP and NLRP3) in the lungs were measured. The results revealed that SGB could attenuate lung tissue damage, improve pulmonary oxygenation, promote the differentiation of AMs to the M2 phenotype, decrease the secretion of IL-1β and IL-6, and increase the secretion of IL-10. Meanwhile, SGB was found to inhibit the production of ROS and CYP-D, and enhance the activities of T-SOD, Mn-SOD and CAT. Furthermore, SGB upregulated Sirt3 and downregulated JAK2/STAT3 and NF-κb p65 phosphorylation, CIRP and NLRP3. Our work revealed that SGB could attenuate LPS-induced ALI by activating the Sirt3-mediated regulation of oxidative stress and pulmonary inflammation; this may shed new light upon the protection of SGB and provide a novel prophylactic strategy for LPS-induced ALI.
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Affiliation(s)
- Shiyun Dai
- Department of Anesthesiology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China; (S.D.)
- Department of Anesthesiology, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Jun Ji
- Department of Anesthesiology, Air Force Medical Center, Air Force Medical University, PLA, Beijing 100142, China
| | - Rongrong Li
- Department of Anesthesiology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China; (S.D.)
| | - Lu Gao
- Department of Physiology, Naval Medical University, Shanghai 200433, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai 200433, China
| | - Xingying He
- Department of Anesthesiology, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China; (S.D.)
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25
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Fang Y, Li Z, Yang L, Li W, Wang Y, Kong Z, Miao J, Chen Y, Bian Y, Zeng L. Emerging roles of lactate in acute and chronic inflammation. Cell Commun Signal 2024; 22:276. [PMID: 38755659 PMCID: PMC11097486 DOI: 10.1186/s12964-024-01624-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 04/20/2024] [Indexed: 05/18/2024] Open
Abstract
Traditionally, lactate has been considered a 'waste product' of cellular metabolism. Recent findings have shown that lactate is a substance that plays an indispensable role in various physiological cellular functions and contributes to energy metabolism and signal transduction during immune and inflammatory responses. The discovery of lactylation further revealed the role of lactate in regulating inflammatory processes. In this review, we comprehensively summarize the paradoxical characteristics of lactate metabolism in the inflammatory microenvironment and highlight the pivotal roles of lactate homeostasis, the lactate shuttle, and lactylation ('lactate clock') in acute and chronic inflammatory responses from a molecular perspective. We especially focused on lactate and lactate receptors with either proinflammatory or anti-inflammatory effects on complex molecular biological signalling pathways and investigated the dynamic changes in inflammatory immune cells in the lactate-related inflammatory microenvironment. Moreover, we reviewed progress on the use of lactate as a therapeutic target for regulating the inflammatory response, which may provide a new perspective for treating inflammation-related diseases.
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Affiliation(s)
- Yunda Fang
- School of First Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zhengjun Li
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- College of Health Economics Management, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Lili Yang
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jingwen Library, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Wen Li
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- School of Acupuncture-Moxibustion and Tuina, ·School of Health Preservation and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yutong Wang
- School of Acupuncture-Moxibustion and Tuina, ·School of Health Preservation and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ziyang Kong
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- School of Acupuncture-Moxibustion and Tuina, ·School of Health Preservation and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Jia Miao
- School of First Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yanqi Chen
- School of First Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yaoyao Bian
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
- School of Acupuncture-Moxibustion and Tuina, ·School of Health Preservation and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
- TCM Rehabilitation Center, Jiangsu Second Chinese Medicine Hospital, Nanjing, 210023, China.
| | - Li Zeng
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
- Faculty of Chinese Medicine, Macau University of Science and Technology, Taipa, Macau, 999078, China.
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26
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Liu S, Liu C, Wang Y, Chen J, He Y, Hu K, Li T, Yang J, Peng J, Hao L. The role of programmed cell death in osteosarcoma: From pathogenesis to therapy. Cancer Med 2024; 13:e7303. [PMID: 38800967 PMCID: PMC11129166 DOI: 10.1002/cam4.7303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 04/01/2024] [Accepted: 05/07/2024] [Indexed: 05/29/2024] Open
Abstract
Osteosarcoma (OS) is a prevalent bone solid malignancy that primarily affects adolescents, particularly boys aged 14-19. This aggressive form of cancer often leads to deadly lung cancer due to its high migration ability. Experimental evidence suggests that programmed cell death (PCD) plays a crucial role in the development of osteosarcoma. Various forms of PCD, including apoptosis, ferroptosis, autophagy, necroptosis, and pyroptosis, contribute significantly to the progression of osteosarcoma. Additionally, different signaling pathways such as STAT3/c-Myc signal pathway, JNK signl pathway, PI3k/AKT/mTOR signal pathway, WNT/β-catenin signal pathway, and RhoA signal pathway can influence the development of osteosarcoma by regulating PCD in osteosarcoma cell. Therefore, targeting PCD and the associated signaling pathways could offer a promising therapeutic approach for treating osteosarcoma.
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Affiliation(s)
- Suqing Liu
- Department of Orthopedics, The Second Affiliated Hospital, Jiangxi Medical CollegeNanchang UniversityNanchangChina
- Queen Marry CollegeNanchang UniversityNanchangChina
| | - Chengtao Liu
- Shandong Wendeng Osteopathic HospitalWeihaiChina
| | - Yian Wang
- Queen Marry CollegeNanchang UniversityNanchangChina
| | - Jiewen Chen
- Queen Marry CollegeNanchang UniversityNanchangChina
| | - Yujin He
- Queen Marry CollegeNanchang UniversityNanchangChina
| | - Kaibo Hu
- The Second Clinical Medical College, Jiangxi Medical CollegeNanchang UniversityNanchangChina
| | - Ting Li
- The Second Clinical Medical College, Jiangxi Medical CollegeNanchang UniversityNanchangChina
| | - Junmei Yang
- The Second Clinical Medical College, Jiangxi Medical CollegeNanchang UniversityNanchangChina
| | - Jie Peng
- Department of Orthopedics, The Second Affiliated Hospital, Jiangxi Medical CollegeNanchang UniversityNanchangChina
- The Second Clinical Medical College, Jiangxi Medical CollegeNanchang UniversityNanchangChina
- Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Liang Hao
- Department of Orthopedics, The Second Affiliated Hospital, Jiangxi Medical CollegeNanchang UniversityNanchangChina
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27
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Jia J, Jiao W, Wang G, Wu J, Huang Z, Zhang Y. Drugs/agents for the treatment of ischemic stroke: Advances and perspectives. Med Res Rev 2024; 44:975-1012. [PMID: 38126568 DOI: 10.1002/med.22009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/20/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Abstract
Ischemic stroke (IS) poses a significant threat to global human health and life. In recent decades, we have witnessed unprecedented progresses against IS, including thrombolysis, thrombectomy, and a few medicines that can assist in reopening the blocked brain vessels or serve as standalone treatments for patients who are not eligible for thrombolysis/thrombectomy therapies. However, the narrow time windows of thrombolysis/thrombectomy, coupled with the risk of hemorrhagic transformation, as well as the lack of highly effective and safe medications, continue to present big challenges in the acute treatment and long-term recovery of IS. In the past 3 years, several excellent articles have reviewed pathophysiology of IS and therapeutic medicines for the treatment of IS based on the pathophysiology. Regretfully, there is no comprehensive overview to summarize all categories of anti-IS drugs/agents designed and synthesized based on molecular mechanisms of IS pathophysiology. From medicinal chemistry view of point, this article reviews a multitude of anti-IS drugs/agents, including small molecule compounds, natural products, peptides, and others, which have been developed based on the molecular mechanism of IS pathophysiology, such as excitotoxicity, oxidative/nitrosative stresses, cell death pathways, and neuroinflammation, and so forth. In addition, several emerging medicines and strategies, including nanomedicines, stem cell therapy and noncoding RNAs, which recently appeared for the treatment of IS, are shortly introduced. Finally, the perspectives on the associated challenges and future directions of anti-IS drugs/agents are briefly provided to move the field forward.
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Affiliation(s)
- Jian Jia
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, Nanjing, China
- Novel Technology Center of Pharmaceutical Chemistry, Shanghai Institute of Pharmaceutical Industry Co., Ltd., China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Weijie Jiao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, Nanjing, China
| | - Guan Wang
- Novel Technology Center of Pharmaceutical Chemistry, Shanghai Institute of Pharmaceutical Industry Co., Ltd., China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Jianbing Wu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, Nanjing, China
| | - Zhangjian Huang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, Nanjing, China
| | - Yihua Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, Nanjing, China
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28
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Saraiva IE, Hamahata N, Huang DT, Kane-Gill SL, Rivosecchi RM, Shiva S, Nolin TD, Chen X, Minturn J, Chang CCH, Li X, Kellum J, Gómez H. Metformin for sepsis-associated AKI: a protocol for the Randomized Clinical Trial of the Safety and FeasibiLity of Metformin as a Treatment for sepsis-associated AKI (LiMiT AKI). BMJ Open 2024; 14:e081120. [PMID: 38688665 PMCID: PMC11086423 DOI: 10.1136/bmjopen-2023-081120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 04/15/2024] [Indexed: 05/02/2024] Open
Abstract
INTRODUCTION Acute kidney injury (AKI) is a common complication of sepsis associated with increased risk of death. Preclinical data and observational human studies suggest that activation of AMP-activated protein kinase, an ubiquitous master regulator of energy that can limit mitochondrial injury, with metformin may protect against sepsis-associated AKI (SA-AKI) and mortality. The Randomized Clinical Trial of the Safety and FeasibiLity of Metformin as a Treatment for sepsis-associated AKI (LiMiT AKI) aims to evaluate the safety and feasibility of enteral metformin in patients with sepsis at risk of developing SA-AKI. METHODS AND ANALYSIS Blind, randomised, placebo-controlled clinical trial in a single-centre, quaternary teaching hospital in the USA. We will enrol adult patients (18 years of age or older) within 48 hours of meeting Sepsis-3 criteria, admitted to intensive care unit, with oral or enteral access. Patients will be randomised 1:1:1 to low-dose metformin (500 mg two times per day), high-dose metformin (1000 mg two times per day) or placebo for 5 days. Primary safety outcome will be the proportion of metformin-associated serious adverse events. Feasibility assessment will be based on acceptability by patients and clinicians, and by enrolment rate. ETHICS AND DISSEMINATION This study has been approved by the Institutional Review Board. All patients or surrogates will provide written consent prior to enrolment and any study intervention. Metformin is a widely available, inexpensive medication with a long track record for safety, which if effective would be accessible and easy to deploy. We describe the study methods using the Standard Protocol Items for Randomized Trials framework and discuss key design features and methodological decisions. LiMiT AKI will investigate the feasibility and safety of metformin in critically ill patients with sepsis at risk of SA-AKI, in preparation for a future large-scale efficacy study. Main results will be published as soon as available after final analysis. TRIAL REGISTRATION NUMBER NCT05900284.
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Affiliation(s)
- Ivan E Saraiva
- CRISMA Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Program for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Natsumi Hamahata
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - David T Huang
- CRISMA Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sandra L Kane-Gill
- CRISMA Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Program for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Pharmacy & Therapeutics, University of Pittsburgh School of Pharmacy, Pittsburgh, Pennsylvania, USA
- Department of Pharmacy, University of Pittsburgh Medical Center Health System, Pittsburgh, Pennsylvania, USA
| | - Ryan M Rivosecchi
- Department of Pharmacy, University of Pittsburgh Medical Center Health System, Pittsburgh, Pennsylvania, USA
| | - Sruti Shiva
- Department of Pharmacology & Chemical Biology, Vascular Medical Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Thomas D Nolin
- Department of Pharmacy & Therapeutics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Xinlei Chen
- Department of Biostatistics, School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - John Minturn
- CRISMA Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Chung-Chou H Chang
- Department of Biostatistics, School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Xiaotong Li
- Department of Pharmacy & Therapeutics, University of Pittsburgh School of Pharmacy, Pittsburgh, Pennsylvania, USA
| | - John Kellum
- Program for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Hernando Gómez
- CRISMA Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Program for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Yuan Y, Zhang Y, Lu X, Li J, Wang M, Zhang W, Zheng M, Sun Z, Xing Y, Li Y, Qu Y, Jiao Y, Han H, Xie C, Mao T. Novel insights into macrophage immunometabolism in nonalcoholic steatohepatitis. Int Immunopharmacol 2024; 131:111833. [PMID: 38503012 DOI: 10.1016/j.intimp.2024.111833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 03/21/2024]
Abstract
Nonalcoholic steatohepatitis (NASH), an inflammatory subtype of nonalcoholic fatty liver disease (NAFLD), is characterized by liver steatosis, inflammation, hepatocellular injury and different degrees of fibrosis, and has been becoming the leading cause of liver-related morbidity and mortality worldwide. Unfortunately, the pathogenesis of NASH has not been completely clarified, and there are no approved therapeutic drugs. Recent accumulated evidences have revealed the involvement of macrophage in the regulation of host liver steatosis, inflammation and fibrosis, and different phenotypes of macrophages have different metabolic characteristics. Therefore, targeted regulation of macrophage immunometabolism may contribute to the treatment and prognosis of NASH. In this review, we summarized the current evidences of the role of macrophage immunometabolism in NASH, especially focused on the related function conversion, as well as the strategies to promote its polarization balance in the liver, and hold promise for macrophage immunometabolism-targeted therapies in the treatment of NASH.
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Affiliation(s)
- Yali Yuan
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Ye Zhang
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Xinyu Lu
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Junxiang Li
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Muyuan Wang
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Wenji Zhang
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | | | | | - Yunqi Xing
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Yitong Li
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Yingdi Qu
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Yao Jiao
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China
| | - Haixiao Han
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China.
| | - Chune Xie
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China; Shenzhen Bao'an Traditional Chinese Medicine Hospital, Shenzhen, PR China.
| | - Tangyou Mao
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, PR China.
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Deng W, Yi P, Xiong Y, Ying J, Lin Y, Dong Y, Wei G, Wang X, Hua F. Gut Metabolites Acting on the Gut-Brain Axis: Regulating the Functional State of Microglia. Aging Dis 2024; 15:480-502. [PMID: 37548933 PMCID: PMC10917527 DOI: 10.14336/ad.2023.0727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/27/2023] [Indexed: 08/08/2023] Open
Abstract
The gut-brain axis is a communication channel that mediates a complex interplay of intestinal flora with the neural, endocrine, and immune systems, linking gut and brain functions. Gut metabolites, a group of small molecules produced or consumed by biochemical processes in the gut, are involved in central nervous system regulation via the highly interconnected gut-brain axis affecting microglia indirectly by influencing the structure of the gut-brain axis or directly affecting microglia function and activity. Accordingly, pathological changes in the central nervous system are connected with changes in intestinal metabolite levels as well as altered microglia function and activity, which may contribute to the pathological process of each neuroinflammatory condition. Here, we discuss the mechanisms by which gut metabolites, for instance, the bile acids, short-chain fatty acids, and tryptophan metabolites, regulate the structure of each component of the gut-brain axis, and explore the important roles of gut metabolites in the central nervous system from the perspective of microglia. At the same time, we highlight the roles of gut metabolites affecting microglia in the pathogenesis of neurodegenerative diseases and neurodevelopmental disorders. Understanding the relationship between microglia, gut microbiota, neuroinflammation, and neurodevelopmental disorders will help us identify new strategies for treating neuropsychiatric disorders.
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Affiliation(s)
- Wenze Deng
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Pengcheng Yi
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Yanhong Xiong
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Jun Ying
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Yue Lin
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Yao Dong
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Gen Wei
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
| | - Xifeng Wang
- Department of Anesthesiology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
| | - Fuzhou Hua
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang City, Jiangxi, China.
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Zhou W, Tang M, He D, Shen Y, Huang Z, Xia W, Wu Z, Wei W, Zheng H, Wang Q, Shi W, Jiang J. Hypoxia promotes metastasis by relieving miR-598-3p-restricted glycolysis in gastric cancer. J Transl Med 2024; 22:283. [PMID: 38491378 PMCID: PMC10943772 DOI: 10.1186/s12967-024-04957-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/05/2024] [Indexed: 03/18/2024] Open
Abstract
The activation of glycolysis, particularly in the context of reprogrammed energy metabolism, is increasingly recognized as a significant characteristic of cancer. However, the precise mechanisms by which glycolysis is promoted in metastatic gastric cancer cells under normal oxygen conditions remain poorly understood. MicroRNAs (miRNAs) play a crucial role in the development of malignant phenotypes in gastric cancer. Nevertheless, our understanding of the specific involvement of miRNAs in hypoxia-induced metabolic shifting and the subsequent metastatic processes is limited. Hypoxia-induced downregulation of miR-598-3p mechanistically leads to the upregulation of RMP and IGF1r, thereby promoting glycolysis. Either overexpression of miR-598-3p or R406 treatment effectively suppresses the metastasis of gastric cancer cells both in vitro and in vivo. Collectively, the depletion of miR-598-3p alters glucose metabolism from oxidative phosphorylation to glycolysis, thereby exacerbating the malignancy of gastric cancer cells. The present findings indicate a potential target for the development of therapeutics against gastric cancers with increased miR-598-3p expression.
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Affiliation(s)
- Wei Zhou
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
| | - Mengyuan Tang
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
- Department of Immunology, Soochow University, SuZhou, 215004, Jiangsu, China
| | - Dan He
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
| | - Yi Shen
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
| | - Ziwei Huang
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
| | - Wenxin Xia
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
| | - Zhiyun Wu
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
| | - Wenxiang Wei
- Department of Cell Biology, Soochow University, SuZhou, 215004, Jiangsu, China
| | - Hui Zheng
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China
- Institutes of Biology and Medical Science (IBMS), Soochow University, SuZhou, 215004, Jiangsu, China
| | - Qi Wang
- Department of Biological Treatment, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China.
| | - Weifeng Shi
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China.
| | - Jingting Jiang
- Department of Biological Treatment, The Third Affiliated Hospital of Soochow University, ChangZhou, 213003, Jiangsu, China.
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Qiang X, Chen W, Zhu CS, Li J, Qi T, Lou L, Wang P, Tracey KJ, Wang H. Therapeutic potential of procathepsin L-inhibiting and progesterone-entrapping dimethyl-β-cyclodextrin nanoparticles in treating experimental sepsis. Front Immunol 2024; 15:1368448. [PMID: 38550581 PMCID: PMC10972846 DOI: 10.3389/fimmu.2024.1368448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/04/2024] [Indexed: 04/02/2024] Open
Abstract
The pathogenic mechanisms of bacterial infections and resultant sepsis are partly attributed to dysregulated inflammatory responses sustained by some late-acting mediators including the procathepsin-L (pCTS-L). It was entirely unknown whether any compounds of the U.S. Drug Collection could suppress pCTS-L-induced inflammation, and pharmacologically be exploited into possible therapies. Here, we demonstrated that a macrophage cell-based screening of a U.S. Drug Collection of 1360 compounds resulted in the identification of progesterone (PRO) as an inhibitor of pCTS-L-mediated production of several chemokines [e.g., Epithelial Neutrophil-Activating Peptide (ENA-78), Monocyte Chemoattractant Protein-1 (MCP-1) or MCP-3] and cytokines [e.g., Interleukin-10 (IL-10) or Tumor Necrosis Factor (TNF)] in primary human peripheral blood mononuclear cells (PBMCs). In vivo, these PRO-entrapping 2,6-dimethal-β-cyclodextrin (DM-β-CD) nanoparticles (containing 1.35 mg/kg PRO and 14.65 mg/kg DM-β-CD) significantly increased animal survival in both male (from 30% to 70%, n = 20, P = 0.041) and female (from 50% to 80%, n = 30, P = 0.026) mice even when they were initially administered at 24 h post the onset of sepsis. This protective effect was associated with a reduction of sepsis-triggered accumulation of three surrogate biomarkers [e.g., Granulocyte Colony Stimulating Factor (G-CSF) by 40%; Macrophage Inflammatory Protein-2 (MIP-2) by 45%; and Soluble Tumor Necrosis Factor Receptor I (sTNFRI) by 80%]. Surface Plasmon Resonance (SPR) analysis revealed a strong interaction between PRO and pCTS-L (KD = 78.2 ± 33.7 nM), which was paralleled with a positive correlation between serum PRO concentration and serum pCTS-L level (ρ = 0.56, P = 0.0009) or disease severity (Sequential Organ Failure Assessment, SOFA; ρ = 0.64, P = 0.0001) score in septic patients. Our observations support a promising opportunity to explore DM-β-CD nanoparticles entrapping lipophilic drugs as possible therapies for clinical sepsis.
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Affiliation(s)
- Xiaoling Qiang
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Weiqiang Chen
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Cassie Shu Zhu
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Jianhua Li
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Timothy Qi
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Li Lou
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Ping Wang
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Kevin J. Tracey
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Haichao Wang
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
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Li F, Liu X, Li M, Wu S, Le Y, Tan J, Zhu C, Wan Q. Inhibition of PKM2 suppresses osteoclastogenesis and alleviates bone loss in mouse periodontitis. Int Immunopharmacol 2024; 129:111658. [PMID: 38359663 DOI: 10.1016/j.intimp.2024.111658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Chronic periodontitis triggers an increase in osteoclastogenesis, with glycolysis playing a crucial role in this process. Pyruvate kinase M2 (PKM2) is a critical enzyme involved in glycolysis and pyruvate metabolism. Yet, the precise function of PKM2 in osteoclasts and their formation remains unclear and requires further investigation. METHODS Bioinformatics was used to investigate critical biological processes in osteoclastogenesis. In vitro, osteoclastogenesis was analyzed using tartrate-resistant acid phosphatase (TRAP) staining, phalloidin staining, quantitative real‑time PCR (RT-qPCR), and Western blotting. Small interfering RNA (siRNA) of PKM2 and Shikonin, a specific inhibitor of PKM2, were used to verify the role of PKM2 in osteoclastogenesis. The mouse model of periodontitis was used to assess the effect of shikonin on bone loss. Analyses included micro computed tomography, immunohistochemistry, flow cytometry, TRAP staining and HE staining. RESULTS Bioinformatic analysis revealed a significant impact of glycolysis and pyruvate metabolism on osteoclastogenesis. Inhibition of PKM2 leads to a significant reduction in osteoclastogenesis. In vitro, co-culture of the heat-killed Porphyromonas gingivalis significantly promoted osteoclastogenesis, concomitant with an increased PKM2 expression in osteoclasts. Shikonin weakened the promoting effect of porphyromonas gingivalis on osteoclastogenesis. In vivo experiments demonstrated that inhibition of PKM2 by shikonin alleviated bone loss induced by periodontitis, suppressed excessive osteoclastogenesis in alveolar bone, and reduced tissue inflammation to some extent. CONCLUSION PKM2 inhibition by shikonin, a specific inhibitor of this enzyme, attenuated osteoclastogenesis and bone resorption in periodontitis. Shikonin appears to be a promising therapeutic agent for treating periodontitis.
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Affiliation(s)
- Feng Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Xinyuan Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Mingjuan Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Shuxuan Wu
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Yushi Le
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Jingjing Tan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Chongjie Zhu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Qilong Wan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
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Chang N, Li J, Lin S, Zhang J, Zeng W, Ma G, Wang Y. Emerging roles of SIRT1 activator, SRT2104, in disease treatment. Sci Rep 2024; 14:5521. [PMID: 38448466 PMCID: PMC10917792 DOI: 10.1038/s41598-024-55923-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 02/28/2024] [Indexed: 03/08/2024] Open
Abstract
Silent information regulator 1 (SIRT1) is a NAD+-dependent class III deacetylase that plays important roles in the pathogenesis of numerous diseases, positioning it as a prime candidate for therapeutic intervention. Among its modulators, SRT2104 emerges as the most specific small molecule activator of SIRT1, currently advancing into the clinical translation phase. The primary objective of this review is to evaluate the emerging roles of SRT2104, and to explore its potential as a therapeutic agent in various diseases. In the present review, we systematically summarized the findings from an extensive array of literature sources including the progress of its application in disease treatment and its potential molecular mechanisms by reviewing the literature published in databases such as PubMed, Web of Science, and the World Health Organization International Clinical Trials Registry Platform. We focuses on the strides made in employing SRT2104 for disease treatment, elucidating its potential molecular underpinnings based on preclinical and clinical research data. The findings reveal that SRT2104, as a potent SIRT1 activator, holds considerable therapeutic potential, particularly in modulating metabolic and longevity-related pathways. This review establishes SRT2104 as a leading SIRT1 activator with significant therapeutic promise.
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Affiliation(s)
- Ning Chang
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China
| | - Junyang Li
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China
| | - Sufen Lin
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China
| | - Jinfeng Zhang
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China
| | - Weiqiang Zeng
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China.
| | - Guoda Ma
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China.
| | - Yajun Wang
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, China.
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Li N, Deng J, Zhang J, Yu F, Ye F, Hao L, Li S, Hu X. A New Strategy for Targeting UCP2 to Modulate Glycolytic Reprogramming as a Treatment for Sepsis A New Strategy for Targeting UCP2. Inflammation 2024:10.1007/s10753-024-01998-4. [PMID: 38429403 DOI: 10.1007/s10753-024-01998-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/09/2024] [Accepted: 02/20/2024] [Indexed: 03/03/2024]
Abstract
Sepsis is a severe and life-threatening disease caused by infection, characterized by a dysregulated immune response. Unfortunately, effective treatment strategies for sepsis are still lacking. The intricate interplay between metabolism and the immune system limits the treatment options for sepsis. During sepsis, there is a profound shift in cellular energy metabolism, which triggers a metabolic reprogramming of immune cells. This metabolic alteration impairs immune responses, giving rise to excessive inflammation and immune suppression. Recent research has demonstrated that UCP2 not only serves as a critical target in sepsis but also functions as a key metabolic switch involved in immune cell-mediated inflammatory responses. However, the regulatory mechanisms underlying this modulation are complex. This article focuses on UCP2 as a target and discusses metabolic reprogramming during sepsis and the complex regulatory mechanisms between different stages of inflammation. Our research indicates that overexpression of UCP2 reduces the Warburg effect, restores mitochondrial function, and improves the prognosis of sepsis. This discovery aims to provide a promising approach to address the significant challenges associated with metabolic dysfunction and immune paralysis.
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Affiliation(s)
- Na Li
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiali Deng
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Junli Zhang
- Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Fei Yu
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fanghang Ye
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Liyuan Hao
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shenghao Li
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyu Hu
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Yang Y, Song B, Guo M, Gao J, Jiang L, Li Q, Liu Y, Cao J. p53-dependent HIF-1α /autophagy mediated glycolysis to support Cr(VI)-induced cell growth and cell migration. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116076. [PMID: 38335577 DOI: 10.1016/j.ecoenv.2024.116076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/23/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024]
Abstract
Cr(VI) is known to be seriously toxic and carcinogenic. Hypoxia-inducible factor-1α (HIF-1α) is a crucial regulator to promote tumor development. In this study, we found that Cr(VI) significantly increased the expression of HIF-1α in A549 cells and in lung of BALB/c mice but not in HELF cells. Treatment with Lificiguat (YC-1), HIF-1α inhibitor, or CoCl2, HIF-1α inducer, could alter Cr(VI)-induced autophagy, glycolysis, and cell growth in A549 cells but not in HELF cells, validating the involvement of HIF-1α in these effects of Cr(VI) in A549 cells. Co-treatments of pcATG4B with YC-1, or siATG4B with CoCl2 demonstrated the role of HIF-1α / autophagy axis in inducing glycolysis and cell growth in A549 cells. In HELF cells, however, only autophagy but not HIF-1α played a role in inducing glycolysis. The protein level of p53 was significantly lower in A549 cells than in HELF cells. RITA, a p53 inducer, attenuated Cr(VI)-induced HIF-1α and LC3-II in A549 cells, suggesting that p53 might be the mechanism underlying the different effects of Cr(VI) on HIF-1α in A549 and HELF cells. Thus, p53-dependent HIF-1α / autophagy-mediated glycolysis plays a role in facilitating Cr(VI)-induced carcinogenesis.
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Affiliation(s)
- Yanqiu Yang
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Bin Song
- Department of Gynecology and Obstetrics, First Affiliated Hospital (Army Medical University), Chongqing 400038, China
| | - Minna Guo
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Jianfeng Gao
- Department of Surgery, the Second Hospital of Dalian Medical University, Dalian, China
| | - Liping Jiang
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Qiujuan Li
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Yong Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China.
| | - Jun Cao
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China.
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Lin Z, Long F, Kang R, Klionsky DJ, Yang M, Tang D. The lipid basis of cell death and autophagy. Autophagy 2024; 20:469-488. [PMID: 37768124 PMCID: PMC10936693 DOI: 10.1080/15548627.2023.2259732] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/25/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
ABBREVIATIONS ACSL: acyl-CoA synthetase long chain family; DISC: death-inducing signaling complex; DAMPs: danger/damage-associated molecular patterns; Dtgn: dispersed trans-Golgi network; FAR1: fatty acyl-CoA reductase 1; GPX4: glutathione peroxidase 4; LPCAT3: lysophosphatidylcholine acyltransferase 3; LPS: lipopolysaccharide; MUFAs: monounsaturated fatty acids; MOMP: mitochondrial outer membrane permeabilization; MLKL, mixed lineage kinase domain like pseudokinase; oxPAPC: oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine; OxPCs: oxidized phosphatidylcholines; PUFAs: polyunsaturated fatty acids; POR: cytochrome p450 oxidoreductase; PUFAs: polyunsaturated fatty acids; RCD: regulated cell death; RIPK1: receptor interacting serine/threonine kinase 1; SPHK1: sphingosine kinase 1; SOAT1: sterol O-acyltransferase 1; SCP2: sterol carrier protein 2; SFAs: saturated fatty acids; SLC47A1: solute carrier family 47 member 1; SCD: stearoyl-CoA desaturase; VLCFA: very long chain fatty acids.
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Affiliation(s)
- Zhi Lin
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Clinical Research Center of Pediatric Cancer, Changsha, Hunan, China
| | - Fei Long
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Postdoctoral Research Station of Basic Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Daniel J. Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Minghua Yang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Clinical Research Center of Pediatric Cancer, Changsha, Hunan, China
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
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Li S, Xue X, Zhang H, Jiang L, Zhang Y, Zhu X, Wang Y. Inhibition of sphingosine kinase 1 attenuates LPS-induced acute lung injury by suppressing endothelial cell pyroptosis. Chem Biol Interact 2024; 390:110868. [PMID: 38218310 DOI: 10.1016/j.cbi.2024.110868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/07/2024] [Accepted: 01/09/2024] [Indexed: 01/15/2024]
Abstract
Acute lung injury (ALI) is a frequent complication of sepsis, with pyroptosis playing a pivotal role. Analysis of Gene Expression Omnibus (GEO) mouse sepsis datasets revealed the upregulation of sphingosine kinase 1 (SphK1) in septic mouse lung tissues, which was validated in lipopolysaccharide (LPS)-treated mice. Therefore, this study aimed to explore the potential role and underlying mechanisms of SphK1, the primary kinase responsible for catalyzing the formation of the bioactive lipid sphingosine-1-phosphat, in sepsis development. Mice received an intraperitoneal injection of SphK1 inhibitor prior to LPS administration. Mouse lung vascular endothelial cells (MLVECs) were exposed to LPS and SphK1 inhibitor. The SphK1 inhibitor mitigated ALI, as evidenced by hematoxylin and eosin (H&E) staining and the wet-to-dry (W/D) weight ratio and reduced Evans blue dye leakage. Furthermore, the SphK1 inhibitor inhibited the activation of the NOD-like receptor protein 3 inflammasome and the subsequent induction of pyroptosis both in vivo and in vitro. Intriguingly, using co-immunoprecipitation (Co-IP) combined with mass spectrometry, our findings revealed that SphK1 associates with pyruvate kinase M2 (PKM2), facilitating PKM2 phosphorylation and its nuclear translocation. TEPP-46, which has the ability to stabilize PKM2 and inhibit the phosphorylation and nuclear translocation of PKM2, markedly reduced the expression of pyroptosis-associated markers and alleviated lung injury. Concludingly, our results suggest that targeting SphK1 is a promising therapeutic strategy for ALI.
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Affiliation(s)
- Siyuan Li
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Xiaomei Xue
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Hui Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Lai Jiang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Yunqian Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
| | - Xiaoyan Zhu
- Department of Physiology, Naval Medical University, Shanghai, 200433, China.
| | - Yan Wang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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Gao X, Wang Z, Xu Y, Feng S, Fu S, Luo Z, Miao J. PFKFB3-Meditated Glycolysis via the Reactive Oxygen Species-Hypoxic Inducible Factor 1α Axis Contributes to Inflammation and Proliferation of Staphylococcus aureus in Epithelial Cells. J Infect Dis 2024; 229:535-546. [PMID: 37592764 DOI: 10.1093/infdis/jiad339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/26/2023] [Accepted: 08/15/2023] [Indexed: 08/19/2023] Open
Abstract
Mastitis caused by antibiotic-resistant strains of Staphylococcus aureus is a significant concern in the livestock industry due to the economic losses it incurs. Regulating immunometabolism has emerged as a promising approach for preventing bacterial inflammation. To investigate the possibility of alleviating inflammation caused by S aureus infection by regulating host glycolysis, we subjected the murine mammary epithelial cell line (EpH4-Ev) to S aureus challenge. Our study revealed that S aureus can colonize EpH4-Ev cells and promote inflammation through hypoxic inducible factor 1α (HIF1α)-driven glycolysis. Notably, the activation of HIF1α was found to be dependent on the production of reactive oxygen species (ROS). By inhibiting PFKFB3, a key regulator in the host glycolytic pathway, we successfully modulated HIF1α-triggered metabolic reprogramming by reducing ROS production in S aureus-induced mastitis. Our findings suggest that there is a high potential for the development of novel anti-inflammatory therapies that safely inhibit the glycolytic rate-limiting enzyme PFKFB3.
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Affiliation(s)
- Xing Gao
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Zhenglei Wang
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Yuanyuan Xu
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Shiyuan Feng
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Shaodong Fu
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Zhenhua Luo
- School of Water, Energy and Environment, Cranfield University, Bedfordshire, United Kingdom
| | - Jinfeng Miao
- Ministry of Education Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
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Adigbli D, Liu R, Meyer J, Cohen J, Di Tanna GL, Gianacas C, Bhattacharya A, Hammond N, Walsham J, Venkatesh B, Hotchkiss R, Finfer S. EARLY PERSISTENT LYMPHOPENIA AND RISK OF DEATH IN CRITICALLY ILL PATIENTS WITH AND WITHOUT SEPSIS. Shock 2024; 61:197-203. [PMID: 38151771 DOI: 10.1097/shk.0000000000002284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
ABSTRACT Purpose: To examine the relationship of early persistent lymphopenia with hospital survival in critically ill patients with and without sepsis to assess whether it can be considered a treatable trait. Methods: Retrospective database analysis of patients with nonelective admission to intensive care units (ICUs) during January 2015 to December 2018. Patients were classified as having sepsis if the Acute Physiology and Chronic Health Evaluation III admission diagnostic code included sepsis or coded for an infection combined with a Sequential Organ Failure Assessment score of ≥2. We defined early persistent lymphopenia at two thresholds (absolute lymphocyte count [ALC] <1.0 and <0.75 × 10 9 /L) based on two qualifying values recorded during the first 4 days in ICU. The main outcome measure was time to in-hospital death. Results: Of 8,507 eligible patients, 7,605 (89.4%) had two ALCs recorded during their first 4 days in ICU; of these, 1,482 (19.5%) had sepsis. Persistent lymphopenia (ALC <1.0) was present in 728 of 1,482 (49.1%) and 2,302 of 6,123 (37.6%) patients with and without sepsis, respectively. For ALC <0.75, the results were 487 of 1,482 (32.9%) and 1,125 of 6,123 (18.4%), respectively. Of 3,030 patients with persistent lymphopenia (ALC <1.0), 562 (18.5%) died compared with 439 of 4,575 (9.6%) without persistent lymphopenia. Persistent lymphopenia was an independent risk factor for in-hospital death in all patients. The hazard ratios for death at ALC <1.0 were 1.89 (95% confidence interval, 1.32-2.71; P = 0.0005) and 1.17 (95% confidence interval, 1.02-1.35; P = 0.0246) in patients with and without sepsis respectively. Conclusions: Early persistent lymphopenia is common in critically ill patients and associated with increased risk of death in patients with and without sepsis. Although the association is stronger in patients with sepsis, lymphopenia is a candidate to be considered a treatable trait; drugs that reverse lymphopenia should be trialed in critically ill patients.
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Affiliation(s)
| | - Rebecca Liu
- Department of Anaesthesiology, Washington University School of Medicine, St Louis, Missouri
| | - Jason Meyer
- Intensive Care Unit, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | | | | | - Christopher Gianacas
- Biostatistics and Data Science Division, The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Amritendu Bhattacharya
- Biostatistics and Data Science Division, The George Institute for Global Health, New Delhi, India
| | - Naomi Hammond
- Critical Care Division, The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
| | | | | | - Richard Hotchkiss
- Department of Anaesthesiology, Washington University School of Medicine, St Louis, Missouri
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Zhu J, Wang R, Yang C, Shao X, Zhang Y, Hou J, Gao Y, Ou A, Chen M, Huang Y. Blocking tumor-platelet crosstalk to prevent tumor metastasis via reprograming glycolysis using biomimetic membrane-hybridized liposomes. J Control Release 2024; 366:328-341. [PMID: 38168561 DOI: 10.1016/j.jconrel.2023.12.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/26/2023] [Accepted: 12/29/2023] [Indexed: 01/05/2024]
Abstract
Activated platelets promote tumor progression and metastasis through active interactions with cancer cells, especially in promoting epithelial-mesenchymal transition (EMT) of tumor cells and shedding tumor cells into the blood. Blocking platelet-tumor cell interactions can be a potential strategy to inhibit tumor metastasis. Platelet activation requires energy produced from aerobic glycolysis. Based on this, we propose a platelet suppression strategy by reprogramming glucose metabolism of platelets, which has an advantage over conventional antiplatelet treatment that has a risk of serious hemorrhage. We develop a biomimetic delivery system using platelet membrane-hybridized liposomes (PM-Lipo) for codelivery of quercetin and shikonin to simultaneously inhibit lactate transporter MCT-4 and a glycolytic enzyme PKM2 for achieving metabolic reprogramming of platelets and suppressing platelet activation. Notably, PM-Lipo can also inhibit glycolysis in cancer cells, which actually takes "two-birds-one-stone" action. Consequently, the platelet-tumor cell interactions are inhibited. Moreover, PM-Lipo can bind with circulating tumor cells and reduce their seeding in the premetastatic microenvironment. The in vivo studies further demonstrated that PM-Lipo can effectively suppress primary tumor growth and reduce lung metastasis without affecting inherited functions of platelets. Reprogramming glycolysis of platelets can remodel the tumor immune microenvironment, including suppression of Treg and stimulation of CTLs.
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Affiliation(s)
- Jie Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; Nanchang University College of Pharmacy, 461 Bayi Rd, Nanchang 330006, China
| | - Chenxiao Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; Nanchang University College of Pharmacy, 461 Bayi Rd, Nanchang 330006, China
| | - Xinyue Shao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; Department of Implant Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
| | - Jiazhen Hou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China
| | - Yanrong Gao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ante Ou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, SAR, China
| | - Yongzhuo Huang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Rd, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China; Zhongshan Institute for Drug Discovery, The Institutes of Drug Discovery and Development, Chinese Academy of Sciences, Zhongshan 528437, China; NMPA Key Laboratory for Quality Research and Evaluation of Pharmaceutical Excipients, Shanghai 201203, China.
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42
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Wang S, Jiang C, Cao K, Li R, Gao Z, Wang Y. HK2 in microglia and macrophages contribute to the development of neuropathic pain. Glia 2024; 72:396-410. [PMID: 37909251 DOI: 10.1002/glia.24482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/29/2023] [Accepted: 10/04/2023] [Indexed: 11/02/2023]
Abstract
Neuropathic pain is a complex pain condition accompanied by prominent neuroinflammation involving activation of both central and peripheral immune cells. Metabolic switch to glycolysis is an important feature of activated immune cells. Hexokinase 2 (HK2), a key glycolytic enzyme enriched in microglia, has recently been shown important in regulating microglial functions. Whether and how HK2 is involved in neuropathic pain-related neuroinflammation remains unknown. Using a HK2-tdTomato reporter line, we found that HK2 was prominently elevated in spinal microglia. Pharmacological inhibition of HK2 effectively alleviated nerve injury-induced acute mechanical pain. However, selective ablation of Hk2 in microglia reduced microgliosis in the spinal dorsal horn (SDH) with little analgesic effects. Further analyses showed that nerve injury also significantly induced HK2 expression in dorsal root ganglion (DRG) macrophages. Deletion of Hk2 in myeloid cells, including both DRG macrophages and spinal microglia, led to the alleviation of mechanical pain during the first week after injury, along with attenuated microgliosis in the ipsilateral SDH, macrophage proliferation in DRGs, and suppressed inflammatory responses in DRGs. These data suggest that HK2 plays an important role in regulating neuropathic pain-related immune cell responses at acute phase and that HK2 contributes to neuropathic pain onset primarily through peripheral monocytes and DRG macrophages rather than spinal microglia.
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Affiliation(s)
- Siyuan Wang
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chao Jiang
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Kelei Cao
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
- The MOE Frontier Research Center of Brain & Brain-machine Integration, Zhejiang University School of Brain Science and Brain Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Run Li
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhihua Gao
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
- The MOE Frontier Research Center of Brain & Brain-machine Integration, Zhejiang University School of Brain Science and Brain Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
| | - Yue Wang
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Zhang Y, Zhu L, Li X, Ge C, Pei W, Zhang M, Zhong M, Zhu X, Lv K. M2 macrophage exosome-derived lncRNA AK083884 protects mice from CVB3-induced viral myocarditis through regulating PKM2/HIF-1α axis mediated metabolic reprogramming of macrophages. Redox Biol 2024; 69:103016. [PMID: 38160539 PMCID: PMC10792748 DOI: 10.1016/j.redox.2023.103016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/15/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024] Open
Abstract
Viral myocarditis (VM) is a clinically common inflammatory disease. Accumulating literature has indicated that M2 macrophages protect mice from Coxsackievirus B3 (CVB3)-induced VM. However, mechanisms that underlie M2 macrophages alleviating myocardial inflammation remain largely undefined. We found that M2 macrophage-derived exosomes (M2-Exo) can effectively attenuate VM. The long non-coding RNA (lncRNA) AK083884 in M2-Exo was found to be involved in the regulation of macrophage polarization by exosome lncRNA sequencing combined with in vitro functional assays. M2-Exo-derived AK083884 promotes macrophage M2 polarization and protects mice from CVB3-induced VM. Furthermore, we identified pyruvate kinase M2 (PKM2) as a protein target binding to AK083884 and found that PKM2 knockdown could promote macrophages to polarize to M2 phenotype. Intriguingly, functional assay revealed that downregulation of AK083884 promotes metabolic reprogramming in macrophages. In addition, co-immunoprecipitation was performed to reveal AK083884 could interact with PKM2 and inhibition of AK083884 can facilitate the binding of PKM2 and HIF-1α. Collectively, our findings uncovered an important role of M2-Exo-derived AK083884 in the regulation of macrophage polarization through metabolic reprogramming, identified a new participant in the development of VM and provided a potential clinically important therapeutic target.
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Affiliation(s)
- Yingying Zhang
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China; Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China
| | - Liangyu Zhu
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China
| | - Xueqin Li
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China; Anhui Province Clinical Research Center for Critical Respiratory Medicine, Wuhu, PR China
| | - Chang Ge
- Department of Psychology, Zhejiang Sci-Tech University, Hangzhou, PR China
| | - Weiya Pei
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China
| | - Mengying Zhang
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China
| | - Min Zhong
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China
| | - Xiaolong Zhu
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China; Anhui Province Clinical Research Center for Critical Respiratory Medicine, Wuhu, PR China.
| | - Kun Lv
- Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation, Wuhu, PR China; Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Non-coding RNA Research Center of Wannan Medical College, Wuhu, PR China; Department of Laboratory Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, PR China; Anhui Province Clinical Research Center for Critical Respiratory Medicine, Wuhu, PR China.
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Zhong H, Tang R, Feng JH, Peng YW, Xu QY, Zhou Y, He ZY, Mei SY, Xing SP. METFORMIN MITIGATES SEPSIS-ASSOCIATED PULMONARY FIBROSIS BY PROMOTING AMPK ACTIVATION AND INHIBITING HIF-1α-INDUCED AEROBIC GLYCOLYSIS. Shock 2024; 61:283-293. [PMID: 38010091 DOI: 10.1097/shk.0000000000002275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
ABSTRACT Recent research has revealed that aerobic glycolysis has a strong correlation with sepsis-associated pulmonary fibrosis (PF). However, at present, the mechanism and pathogenesis remain unclear. We aimed to test the hypothesis that the adenosine monophosphate-activated protein kinase (AMPK) activation and suppression of hypoxia-inducible factor 1α (HIF-1α)-induced aerobic glycolysis play a central role in septic pulmonary fibrogenesis. Cellular experiments demonstrated that lipopolysaccharide increased fibroblast activation through AMPK inactivation, HIF-1α induction, alongside an augmentation of aerobic glycolysis. By contrast, the effects were reversed by AMPK activation or HIF-1α inhibition. In addition, pretreatment with metformin, which is an AMPK activator, suppresses HIF-1α expression and alleviates PF associated with sepsis, which is caused by aerobic glycolysis, in mice. Hypoxia-inducible factor 1α knockdown demonstrated similar protective effects in vivo . Our research implies that targeting AMPK activation and HIF-1α-induced aerobic glycolysis with metformin might be a practical and useful therapeutic alternative for sepsis-associated PF.
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Affiliation(s)
- Han Zhong
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Huang J, Chen J, Wang C, Lai L, Mi H, Chen S. Deciphering the molecular classification of pediatric sepsis: integrating WGCNA and machine learning-based classification with immune signatures for the development of an advanced diagnostic model. Front Genet 2024; 15:1294381. [PMID: 38348451 PMCID: PMC10859440 DOI: 10.3389/fgene.2024.1294381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/16/2024] [Indexed: 02/15/2024] Open
Abstract
Introduction: Pediatric sepsis (PS) is a life-threatening infection associated with high mortality rates, necessitating a deeper understanding of its underlying pathological mechanisms. Recently discovered programmed cell death induced by copper has been implicated in various medical conditions, but its potential involvement in PS remains largely unexplored. Methods: We first analyzed the expression patterns of cuproptosis-related genes (CRGs) and assessed the immune landscape of PS using the GSE66099 dataset. Subsequently, PS samples were isolated from the same dataset, and consensus clustering was performed based on differentially expressed CRGs. We applied weighted gene co-expression network analysis to identify hub genes associated with PS and cuproptosis. Results: We observed aberrant expression of 27 CRGs and a specific immune landscape in PS samples. Our findings revealed that patients in the GSE66099 dataset could be categorized into two cuproptosis clusters, each characterized by unique immune landscapes and varying functional classifications or enriched pathways. Among the machine learning approaches, Extreme Gradient Boosting demonstrated optimal performance as a diagnostic model for PS. Discussion: Our study provides valuable insights into the molecular mechanisms underlying PS, highlighting the involvement of cuproptosis-related genes and immune cell infiltration.
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Affiliation(s)
- Junming Huang
- Department of Urology, Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jinji Chen
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Chengbang Wang
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Lichuan Lai
- Department of Laboratory, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Hua Mi
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shaohua Chen
- Department of Urology, Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China
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Zhao Y, Pan Y, Chen M, Tan Y, Chang X, Li H, Zhi Y. PKM2 interacts with and phosphorylates PHB2 to sustain mitochondrial quality control against septic cerebral-cardiac injury. Int J Med Sci 2024; 21:633-643. [PMID: 38464826 PMCID: PMC10920845 DOI: 10.7150/ijms.92367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/03/2024] [Indexed: 03/12/2024] Open
Abstract
Sepsis induces profound disruptions in cellular homeostasis, particularly impacting mitochondrial function in cardiovascular and cerebrovascular systems. This study elucidates the regulatory role of the Pyruvate Kinase M2 (PKM2)- Prohibitin 2 (PHB2) axis in mitochondrial quality control during septic challenges and its protective effects against myocardial and cerebral injuries. Employing LPS-induced mouse models, we demonstrate a significant downregulation of PKM2 and PHB2 in both heart and brain tissues post-sepsis, with corresponding impairments in mitochondrial dynamics, including fission, fusion, and mitophagy. Overexpression of PKM2 and PHB2 not only restores mitochondrial function, as evidenced by normalized ATP production and membrane potential but also confers resistance to oxidative stress by mitigating reactive oxygen species generation. These cellular mechanisms translate into substantial in vivo benefits, with transgenic mice overexpressing PKM2 or PHB2 displaying remarkable resistance to sepsis-induced cardiomyocyte and neuronal apoptosis, and organ dysfunction. Our findings highlight the PKM2-PHB2 interaction as a novel therapeutic target for sepsis, providing a foundation for future research into mitochondrial-based interventions to treat this condition. The study's insights into the molecular underpinnings of sepsis-induced organ failure pave the way for potential clinical applications in the management of sepsis and related pathologies.
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Affiliation(s)
- Yuanchen Zhao
- Neurology Department, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine
| | - Yawen Pan
- Wenzhou TCM Hospital of Zhejiang Chinese Medical University, Wenzhou, 325000, China
| | - Mengyuan Chen
- Wenzhou TCM Hospital of Zhejiang Chinese Medical University, Wenzhou, 325000, China
| | - Ying Tan
- Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xing Chang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Haixia Li
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Yinghao Zhi
- Department of Rehabilitation Medicine, Wenzhou TCM Hospital of Zhejiang Chinese Medical University, Wenzhou, 325000, China
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Wang T, Huang Y, Zhang X, Zhang Y, Zhang X. Advances in metabolic reprogramming of renal tubular epithelial cells in sepsis-associated acute kidney injury. Front Physiol 2024; 15:1329644. [PMID: 38312312 PMCID: PMC10834781 DOI: 10.3389/fphys.2024.1329644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 01/09/2024] [Indexed: 02/06/2024] Open
Abstract
Sepsis-associated acute kidney injury presents as a critical condition characterized by prolonged hospital stays, elevated mortality rates, and an increased likelihood of transition to chronic kidney disease. Sepsis-associated acute kidney injury suppresses fatty acid oxidation and oxidative phosphorylation in the mitochondria of renal tubular epithelial cells, thus favoring a metabolic shift towards glycolysis for energy production. This shift acts as a protective mechanism for the kidneys. However, an extended reliance on glycolysis may contribute to tubular atrophy, fibrosis, and subsequent chronic kidney disease progression. Metabolic reprogramming interventions have emerged as prospective strategies to counteract sepsis-associated acute kidney injury by restoring normal metabolic function, offering potential therapeutic and preventive modalities. This review delves into the metabolic alterations of tubular epithelial cells associated with sepsis-associated acute kidney injury, stressing the importance of metabolic reprogramming for the immune response and the urgency of metabolic normalization. We present various intervention targets that could facilitate the recovery of oxidative phosphorylation-centric metabolism. These novel insights and strategies aim to transform the clinical prevention and treatment landscape of sepsis-associated acute kidney injury, with a focus on metabolic mechanisms. This investigation could provide valuable insights for clinicians aiming to enhance patient outcomes in the context of sepsis-associated acute kidney injury.
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Affiliation(s)
- Tiantian Wang
- Department of Critical Care Medicine, The Affiliated Huaian No 1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu, China
| | - Ying Huang
- Department of Critical Care Medicine, The Affiliated Huaian No 1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu, China
| | - Xiaobei Zhang
- Department of Critical Care Medicine, The Affiliated Huaian No 1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu, China
| | - Yi Zhang
- Department of Critical Care Medicine, The Affiliated Huaian No 1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu, China
| | - Xiangcheng Zhang
- Department of Critical Care Medicine, The Affiliated Huaian No 1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu, China
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Hua Y, Yang S, Zhang Y, Li J, Wang M, Yeerkenbieke P, Liao Q, Liu Q. Modulating ferroptosis sensitivity: environmental and cellular targets within the tumor microenvironment. J Exp Clin Cancer Res 2024; 43:19. [PMID: 38217037 PMCID: PMC10787430 DOI: 10.1186/s13046-023-02925-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/06/2023] [Indexed: 01/14/2024] Open
Abstract
Ferroptosis, a novel form of cell death triggered by iron-dependent phospholipid peroxidation, presents significant therapeutic potential across diverse cancer types. Central to cellular metabolism, the metabolic pathways associated with ferroptosis are discernible in both cancerous and immune cells. This review begins by delving into the intricate reciprocal regulation of ferroptosis between cancer and immune cells. It subsequently details how factors within the tumor microenvironment (TME) such as nutrient scarcity, hypoxia, and cellular density modulate ferroptosis sensitivity. We conclude by offering a comprehensive examination of distinct immunophenotypes and environmental and metabolic targets geared towards enhancing ferroptosis responsiveness within the TME. In sum, tailoring precise ferroptosis interventions and combination strategies to suit the unique TME of specific cancers may herald improved patient outcomes.
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Affiliation(s)
- Yuze Hua
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Sen Yang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Yalu Zhang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China
- Department of General Surgery, Anhui Provincial Hospital, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230027, China
| | - Jiayi Li
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Mengyi Wang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Palashate Yeerkenbieke
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China
- Department of General Surgery, Xinjiang Yili Kazak Autonomous Prefecture Friendship Hospital, Xinjiang, 835099, China
| | - Quan Liao
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China.
| | - Qiaofei Liu
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 1# Shuaifuyuan, Dongcheng District, Beijing, 100730, China.
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Zheng XQ, Li Z, Meng QQ, Li W, Li QL, Xie L, Xiao Y, Xu QY, Chen YY. Treponema pallidum recombinant protein Tp47 activates NOD-like receptor family protein 3 inflammasomes in macrophages via glycolysis. Int Immunopharmacol 2024; 126:111204. [PMID: 38016343 DOI: 10.1016/j.intimp.2023.111204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 11/30/2023]
Abstract
Glycolysis is a key pathway in cellular glucose metabolism for energy supply and regulates immune cell activation. Whether glycolysis is involved in the activation of NOD-like receptor family protein 3 (NLRP3) inflammasomes during Treponema pallidum (T. pallidum) infection is unclear. In this study, the effect of T. pallidum membrane protein Tp47 on NLRP3 inflammasome activation in rabbit peritoneal macrophages was analysed and the role of glycolysis in NLRP3 inflammasome activation was explored. The results showed that Tp47 promoted NLRP3, caspase-1, and IL-1β mRNA expression in macrophages, enhanced glycolysis and glycolytic capacity of macrophage, and promoted the production of macrophage glycolytic metabolites citrate, phosphoenolpyruvate, and lactate. The M2 pyruvate kinase (PKM2) inhibitor shikonin down-regulated the Tp47-promoted NLRP3, caspase-1, and IL-1β mRNA expression in macrophages, and suppressed the Tp47-enhanced glycolysis and glycolytic capacity. Similarly, si-PKM2 significantly inhibited Tp47-promoted NLRP3, caspase-1, and IL-1β mRNA expression and the Tp47-enhanced glycolysis and glycolytic capacity in macrophages. In conclusion, Tp47 activated NLRP3 inflammasomes via PKM2-dependent glycolysis and provided a new perspective on the effect of T. pallidum infection on host macrophages, which would contribute to the understanding of the infection mechanism and host immune mechanism of T. pallidum.
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Affiliation(s)
- Xin-Qi Zheng
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China
| | - Ze Li
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China
| | - Qing-Qi Meng
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China
| | - Wei Li
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China
| | - Qiu-Ling Li
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China
| | - Lin Xie
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China
| | - Yao Xiao
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China; Department of Hospital Infection Management, School of Medicine, Zhongshan Hospital of Xiamen University, Xiamen University, Xiamen, China.
| | - Qiu-Yan Xu
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China.
| | - Yu-Yan Chen
- Center of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361004, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen 361004, China.
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Wu J, Liu T, Xie W, Zhuo Y, Feng Y. Ox-LDL promotes M1-like polarization of macrophages through the miR-21-5p/SKP2/EP300 pathway. J Biochem Mol Toxicol 2024; 38:e23516. [PMID: 37728154 DOI: 10.1002/jbt.23516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/10/2023] [Accepted: 08/17/2023] [Indexed: 09/21/2023]
Abstract
Oxidized low-density lipoprotein (ox-LDL) mediated inflammatory damage, which possibly induces atherosclerosis (AS); however, the role of miRNA in this process has rarely been reported. In this paper, we study the ox-LDL-related endothelial cell damage and changes of macrophages. The bioinformatics method was used to analyze the expression changes of miRNA in AS patients, luciferase assay was used to study the interaction of protein and miRNA, and co-IP and ubiquitination experiments were used to analyze protein interaction. Flow cytometry was used to detect the polarization of macrophages. Database analysis showed that the expression of miR-21-5p was upregulated in AS patients. Luciferase assay showed that miR-21-5p can bind to SKP2 and subsequently influence ubiquitination of EP300. Overexpression of EP300 strengthens the HMGB1-induced acetylation and subsequently mediates the dissociation of HMGB1 from SIRT1, and thus HMGB1 could be secreted outside the cell. The HMGB1 released from endothelial cells can promote macrophage M1 polarization. This study shows that ox-LDL activates the SKP2/EP300 pathway through promoting upregulation of miR-21-5p, thereby acetylating and secreting HMGB1 outside the endothelium, subsequently enhancing macrophage polarization to further stabilize the inflammation situation.
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Affiliation(s)
- Jinlei Wu
- Department of Cardiology, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Tingting Liu
- Department of Internal Medicine, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Wenjie Xie
- Department of Cardiology, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Yufeng Zhuo
- Department of Cardiology, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Yanling Feng
- Department of Cardiology, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
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