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Lu G, Wen Z, Yu L, Wang C, Gao Y. HIF1A overexpression caused by etomidate activates PGK1-induced oxidative stress in postoperative cognitive dysfunction. Brain Res 2024; 1841:149069. [PMID: 38852658 DOI: 10.1016/j.brainres.2024.149069] [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: 12/19/2023] [Revised: 05/22/2024] [Accepted: 06/06/2024] [Indexed: 06/11/2024]
Abstract
Etomidate (ETO), a hypnotic agent used for anesthesia induction, has been shown to induce long-lasting cognitive deficits. In the present study, we investigated whether ETO could activate the HIF1A/PGK1 pathway to antagonize oxidative damage in mice with postoperative cognitive dysfunction (POCD). A mouse model of ETO-mediated POCD was established, and pathological changes, apoptosis, and inflammatory factors in mouse hippocampal tissues were analyzed by HE staining, TUNEL assay, and ELISA. ETO was revealed to cause cognitive dysfunction in mice. Integrated database mining was conducted to screen out transcription factors that are both related to ETO and POCD. Hypoxia-inducible factor 1-alpha (HIF1A) was overexpressed in mice with POCD, and downregulation of HIF1A alleviated cognitive dysfunction in mice. HIF1A downregulation inhibited the transcription of phosphoglycerate kinase 1 (PGK1). Overexpression of PGK1 abated the alleviating effects of HIF1A knockdown on oxidative stress in mice with POCD. In addition, HIF1A activation of PGK1 induced oxidative stress and apoptosis in HT-22 cells while inhibiting cell viability. Taken together, we demonstrated that HIF1A activation of PGK1 induced oxidative stress in ETO-mediated POCD.
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Affiliation(s)
- Guangxi Lu
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150077, Heilongjiang, PR China
| | - Zhibin Wen
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150077, Heilongjiang, PR China
| | - Lu Yu
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150077, Heilongjiang, PR China
| | - Chao Wang
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150077, Heilongjiang, PR China
| | - Yang Gao
- Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150077, Heilongjiang, PR China.
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2
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Wang Z, Zhang S, Cheng R, Jiang A, Qin X. Knockdown of RGMA improves ischemic stroke via Reprogramming of Neuronal Metabolism. Free Radic Biol Med 2024; 218:41-56. [PMID: 38556067 DOI: 10.1016/j.freeradbiomed.2024.03.020] [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: 02/07/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
Neuronal energy metabolism dysregulation is involved in various pathologies of Ischemia-reperfusion (I/R), yet the role of RGMA in neuronal metabolic reprogramming has not been reported. In this study, we found that RGMA expression significantly increased after I/R, and compared to control mice, mice with MCAO/R showed an increase in glycolytic metabolic products and the expression of glycolytic pathway proteins. Furthermore, RGMA levels are closely related to neuronal energy metabolism. We discovered that knockdown of RGMA can shift neuronal energy metabolism towards oxidative phosphorylation and the pentose phosphate pathway, thereby protecting mice from ischemic reperfusion injury. Mechanistically, knockdown of RGMA can downregulate PGK1 expression, reducing the increase in glycolytic flux following ischemia reperfusion. Moreover, we found that knockdown of RGMA can reduce the interaction between USP10 and PGK1, thus affecting the ubiquitination degradation of PGK1. In summary, our data suggest that RGMA may regulate neuronal energy metabolism by inhibiting the USP10-mediated deubiquitination of PGK1, thus protecting it from I/R injury. This study provides new ideas for clarifying the intrinsic mechanism of neuronal damage after I/R.
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Affiliation(s)
- Zijie Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Shaoru Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ruiqi Cheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Anan Jiang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Xinyue Qin
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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3
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Chen S, Wang H, Chen J, Cheng J, Gao J, Chen S, Yao X, Sun J, Ren J, Li S, Che F, Wan Q. Upregulation of mitochondrial PGK1 by ROS-TBC1D15 pathway promotes neuronal death after oxygen-glucose deprivation/reoxygenation injury. Brain Res 2024; 1825:148724. [PMID: 38110073 DOI: 10.1016/j.brainres.2023.148724] [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: 09/25/2023] [Revised: 11/21/2023] [Accepted: 12/13/2023] [Indexed: 12/20/2023]
Abstract
Phosphoglycerate kinase 1 (PGK1) is extensively located in the cytosol and mitochondria. The role of PGK1 in ischemic neuronal injury remains elusive. In the in vitro model of oxygen-glucose deprivation/reoxygenation (OGD/R), we showed that PGK1 expression was increased in cortical neurons. Knockdown of PGK1 led to a reduction of OGD/R-induced neuronal death. The expression of cytosolic PGK1 was reduced, but the levels of mitochondrial PGK1 were increased in OGD/R-insulted neurons. Inhibiting the activity of mitochondrial PGK1 alleviated the neuronal injury after OGD/R insult. We further showed that the protein levels of TBC domain family member 15 (TBC1D15) were decreased in OGD/R-insulted neurons. Knockdown of TBC1D15 led to increased levels of mitochondrial PGK1 after OGD/R insult in cortical neurons. Moreover, increased reactive oxygen species (ROS) resulted in a reduction of TBC1D15 in OGD/R-insulted neurons. These results suggest that the upregulation of mitochondrial PGK1 by ROS-TBC1D15 signaling pathway promotes neuronal death after OGD/R injury. Mitochondrial PGK1 may act as a regulator of neuronal survival and interventions in the PGK1-dependent pathway may be a potential therapeutic strategy.
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Affiliation(s)
- Songfeng Chen
- Department of Physiology, School of Medicine, Wuhan University, Wuhan, China
| | - Hui Wang
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Juan Chen
- Department of Neurology, the Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Jing Cheng
- Department of Physiology, School of Medicine, Wuhan University, Wuhan, China
| | - Jingchen Gao
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Shujun Chen
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Xujin Yao
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Jiangdong Sun
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Jinyang Ren
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Shifang Li
- Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Fengyuan Che
- Central Laboratory, Department of Neurology, Linyi People's Hospital, Qingdao University, Linyi, China.
| | - Qi Wan
- Department of Physiology, School of Medicine, Wuhan University, Wuhan, China; Institute of Neuroregeneration & Neurorehabilitation, School of Basic Medicine, Qingdao University, Qingdao, China.
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4
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Ghasemi F, Farkhondeh T, Samarghandian S, Ghasempour A, Shakibaie M. Oncogenic Alterations of Metabolism Associated with Resistance to Chemotherapy. Curr Mol Med 2024; 24:856-866. [PMID: 37350008 DOI: 10.2174/1566524023666230622104625] [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: 07/31/2022] [Revised: 04/12/2023] [Accepted: 04/20/2023] [Indexed: 06/24/2023]
Abstract
Metabolic reprogramming in cancer cells is a strategy to meet high proliferation rates, invasion, and metastasis. Also, several researchers indicated that the cellular metabolism changed during the resistance to chemotherapy. Since glycolytic enzymes play a prominent role in these alterations, the ability to reduce resistance to chemotherapy drugs is promising for cancer patients. Oscillating gene expression of these enzymes was involved in the proliferation, invasion, and metastasis of cancer cells. This review discussed the roles of some glycolytic enzymes associated with cancer progression and resistance to chemotherapy in the various cancer types.
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Affiliation(s)
- Fahimeh Ghasemi
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
- Department of Medical Biotechnology, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Tahereh Farkhondeh
- Department of Toxicology and Pharmacology, School of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Healthy Ageing Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Alireza Ghasempour
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran
| | - Mehdi Shakibaie
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
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5
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Huang PC, Chang CW, Lin YC, Chen CY, Chen TY, Chuang LT, Liu CJ, Huang CL, Li WC. Pyruvate Kinase Differentially Alters Metabolic Signatures during Head and Neck Carcinogenesis. Int J Mol Sci 2023; 24:16639. [PMID: 38068962 PMCID: PMC10706023 DOI: 10.3390/ijms242316639] [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: 10/16/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 12/18/2023] Open
Abstract
During glycolysis, the muscle isoform of pyruvate kinase PKM2 produces ATP in exchange for dephosphorylation of phosphoenolpyruvate (PEP) into pyruvate. PKM2 has been considered as a tumor-promoting factor in most cancers, whereas the regulatory role of PKM2 during head and neck carcinogenesis remained to be delineated. PKM2 mRNA and protein expression was examined in head and neck tumorous specimens. The role of PKM2 in controlling cellular malignancy was determined in shRNA-mediated PKM2-deficient head and neck squamous cell carcinoma (HNSC) cells. In agreement with the results in other cancers, PKM2 expression is enriched in both mouse and human HNSC tissues. Nevertheless, PKM2 mRNA expression reversely correlated with tumor stage, and greater recurrence-free survival rates are evident in the PKM2high HNSC population, arguing that PKM2 may be tumor-suppressive. Multifaceted analyses showed a greater in vivo xenografic tumor growth and an enhanced cisplatin resistance in response to PKM2 loss, whereas PKM2 silencing led to reduced cell motility. At the molecular level, metabolic shifts towards mitochondrial metabolism and activation of oncogenic Protein kinase B (PKB/Akt) and extracellular signal-regulated kinase (ERK) signals were detected in PKM2-silencing HNSC cells. In sum, our findings demonstrated that PKM2 differentially modulated head and neck tumorigenicity via metabolic reprogramming.
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Affiliation(s)
- Pei-Chun Huang
- Institute of Oral Biology, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (P.-C.H.); (C.-Y.C.); (T.-Y.C.)
| | - Ching-Wen Chang
- Graduate Institute of Metabolism and Obesity Sciences (GIMOS), College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan;
- Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Cheng Lin
- Department of Dentistry, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (Y.-C.L.); (C.-J.L.)
- Oral Medicine Innovation Center (OMIC), National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
| | - Chang-Yi Chen
- Institute of Oral Biology, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (P.-C.H.); (C.-Y.C.); (T.-Y.C.)
| | - Tsai-Ying Chen
- Institute of Oral Biology, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (P.-C.H.); (C.-Y.C.); (T.-Y.C.)
| | - Lu-Te Chuang
- Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, Hsinchu 30015, Taiwan;
| | - Chung-Ji Liu
- Department of Dentistry, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (Y.-C.L.); (C.-J.L.)
- Department of Oral and Maxillofacial Surgery, MacKay Memorial Hospital, Taipei 10449, Taiwan
- Department of Medical Research, MacKay Memorial Hospital, Taipei 10449, Taiwan
| | - Chien-Ling Huang
- Department of Health Technology and Informatics (HTI), The Hong Kong Polytechnic University (PolyU), Hung Hom, Kowloon, Hong Kong SAR, China;
| | - Wan-Chun Li
- Institute of Oral Biology, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (P.-C.H.); (C.-Y.C.); (T.-Y.C.)
- Department of Dentistry, College of Dentistry, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; (Y.-C.L.); (C.-J.L.)
- Oral Medicine Innovation Center (OMIC), National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
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Serrao S, Contini C, Guadalupi G, Olianas A, Lai G, Messana I, Castagnola M, Costanzo G, Firinu D, Del Giacco S, Manconi B, Cabras T. Salivary Cystatin D Interactome in Patients with Systemic Mastocytosis: An Exploratory Study. Int J Mol Sci 2023; 24:14613. [PMID: 37834061 PMCID: PMC10572539 DOI: 10.3390/ijms241914613] [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: 05/31/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Mastocytosis, a rare blood disorder characterized by the proliferation of clonal abnormal mast cells, has a variegated clinical spectrum and diagnosis is often difficult and delayed. Recently we proposed the cathepsin inhibitor cystatin D-R26 as a salivary candidate biomarker of systemic mastocytosis (SM). Its C26 variant is able to form multiprotein complexes (mPCs) and since protein-protein interactions (PPIs) are crucial for studying disease pathogenesis, potential markers, and therapeutic targets, we aimed to define the protein composition of the salivary cystatin D-C26 interactome associated with SM. An exploratory affinity purification-mass spectrometry method was applied on pooled salivary samples from SM patients, SM patient subgroups with and without cutaneous symptoms (SM+C and SM-C), and healthy controls (Ctrls). Interactors specifically detected in Ctrls were found to be implicated in networks associated with cell and tissue homeostasis, innate system, endopeptidase regulation, and antimicrobial protection. Interactors distinctive of SM-C patients participate to PPI networks related to glucose metabolism, protein S-nitrosylation, antibacterial humoral response, and neutrophil degranulation, while interactors specific to SM+C were mainly associated with epithelial and keratinocyte differentiation, cytoskeleton rearrangement, and immune response pathways. Proteins sensitive to redox changes, as well as proteins with immunomodulatory properties and activating mast cells, were identified in patients; many of them were involved directly in cytoskeleton rearrangement, a process crucial for mast cell activation. Although preliminary, these results demonstrate that PPI alterations of the cystatin D-C26 interactome are associated with SM and provide a basis for future investigations based on quantitative proteomic analysis and immune validation.
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Affiliation(s)
- Simone Serrao
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
| | - Cristina Contini
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
| | - Giulia Guadalupi
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
| | - Alessandra Olianas
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
| | - Greca Lai
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
| | - Irene Messana
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche, 00168 Rome, Italy;
| | - Massimo Castagnola
- Proteomics Laboratory, European Center for Brain Research, (IRCCS) Santa Lucia Foundation, 00168 Rome, Italy;
| | - Giulia Costanzo
- Department of Medical Sciences and Public Health, 09124 Cagliari, Italy; (G.C.); (D.F.); (S.D.G.)
| | - Davide Firinu
- Department of Medical Sciences and Public Health, 09124 Cagliari, Italy; (G.C.); (D.F.); (S.D.G.)
| | - Stefano Del Giacco
- Department of Medical Sciences and Public Health, 09124 Cagliari, Italy; (G.C.); (D.F.); (S.D.G.)
| | - Barbara Manconi
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
| | - Tiziana Cabras
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; (S.S.); (G.G.); (A.O.); (G.L.); (B.M.)
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Ferraro G, Voli A, Mozzicafreddo M, Pollastro F, Tosco A, Monti MC. Targeting phosphoglycerate kinases by tatridin A, a natural sesquiterpenoid endowed with anti-cancer activity, using a proteomic platform. Front Mol Biosci 2023; 10:1212541. [PMID: 37767160 PMCID: PMC10519794 DOI: 10.3389/fmolb.2023.1212541] [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: 04/26/2023] [Accepted: 07/10/2023] [Indexed: 09/29/2023] Open
Abstract
Tatridin A (TatA) is a germacrane sesquiterpenoid containing one E-double bond and one Z-double bond in its 10-membered ring, which is fused to a 3-methylene-dihydrofuran-2-one moiety. Tatridin A bioactivity has been poorly investigated despite its interesting chemical structure. Here, a functional proteomic platform was adapted to disclose its most reliable targets in leukemia monocytic cells, and phosphoglycerate kinases were recognized as the most affine enzymes. Through a combination of limited proteolysis and molecular docking, it has been discovered that tatridin A interacts with the active domains of phosphoglycerate kinase 1, altering its hinge region, and it can be accountable for tatridin A inhibition potency on enzyme activity. A more detailed tatridin A biological profile showed that it is also fully active against gastric cancer cells, downregulating the mRNA levels of chemokine receptor 4 and β-catenin and inhibiting the invasiveness of living KATO III cells as a direct consequence of phosphoglycerate kinase 1 antagonism.
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Affiliation(s)
- Giusy Ferraro
- Department of Pharmacy, Università di Salerno, Fisciano, Italy
- PhD Program in Drug Discovery and Development, Department of Pharmacy, Università di Salerno, Fisciano, Italy
| | - Antonia Voli
- Department of Pharmacy, Università di Salerno, Fisciano, Italy
- PhD Program in Drug Discovery and Development, Department of Pharmacy, Università di Salerno, Fisciano, Italy
| | - Matteo Mozzicafreddo
- Department of Clinical and Molecular Sciences, Università Politecnica Delle Marche, Ancona, Italy
| | - Federica Pollastro
- Department of Pharmaceutical Sciences, Università Del Piemonte Orientale, Novara, Italy
- PlantaChem Srls, Novara, Italy
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dos Santos DA, Souza HFS, Silber AM, de Souza TDACB, Ávila AR. Protein kinases on carbon metabolism: potential targets for alternative chemotherapies against toxoplasmosis. Front Cell Infect Microbiol 2023; 13:1175409. [PMID: 37287468 PMCID: PMC10242022 DOI: 10.3389/fcimb.2023.1175409] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/02/2023] [Indexed: 06/09/2023] Open
Abstract
The apicomplexan parasite Toxoplasma gondii is the causative agent of toxoplasmosis, a global disease that significantly impacts human health. The clinical manifestations are mainly observed in immunocompromised patients, including ocular damage and neuronal alterations leading to psychiatric disorders. The congenital infection leads to miscarriage or severe alterations in the development of newborns. The conventional treatment is limited to the acute phase of illness, without effects in latent parasites; consequently, a cure is not available yet. Furthermore, considerable toxic effects and long-term therapy contribute to high treatment abandonment rates. The investigation of exclusive parasite pathways would provide new drug targets for more effective therapies, eliminating or reducing the side effects of conventional pharmacological approaches. Protein kinases (PKs) have emerged as promising targets for developing specific inhibitors with high selectivity and efficiency against diseases. Studies in T. gondii have indicated the presence of exclusive PKs without homologs in human cells, which could become important targets for developing new drugs. Knockout of specific kinases linked to energy metabolism have shown to impair the parasite development, reinforcing the essentiality of these enzymes in parasite metabolism. In addition, the specificities found in the PKs that regulate the energy metabolism in this parasite could bring new perspectives for safer and more efficient therapies for treating toxoplasmosis. Therefore, this review provides an overview of the limitations for reaching an efficient treatment and explores the role of PKs in regulating carbon metabolism in Toxoplasma, discussing their potential as targets for more applied and efficient pharmacological approaches.
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Affiliation(s)
| | - Higo Fernando Santos Souza
- Laboratory of Biochemistry of Trypanosomes (LabTryp), Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Ariel M. Silber
- Laboratory of Biochemistry of Trypanosomes (LabTryp), Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | | | - Andréa Rodrigues Ávila
- Laboratório de Pesquisa em Apicomplexa, Instituto Carlos Chagas, Fiocruz, Curitiba, Brazil
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PGK1 modulates balance between pro- and anti-inflammatory cytokines by interacting with ITI-H4. Biomed Pharmacother 2023; 161:114437. [PMID: 36841032 DOI: 10.1016/j.biopha.2023.114437] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/16/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023] Open
Abstract
Inter-α-trypsin inhibitor heavy chain 4 (ITI-H4) is one of the acute phase proteins and is mainly related with inflammatory diseases such as bacterial bloodstream infection and recurrent pregnancy loss (RPL). In a previous study, ITI-H4 was reported to be cleaved by kallikrein B1 (KLKB1) and its cleaved form induces the imbalance between pro- and anti-inflammatory cytokines. Therefore, in this study, putative substrates of ITI-H4 were isolated by immunoprecipitation and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF/MS) analysis. Of those, phosphoglycerate kinase 1 (PGK1) was found to be a binding protein of ITI-H4. PGK1 increases the level of ITI-H4 expression and blocks the cleavage of ITI-H4 mediated by KLKB1. It also inhibits pro-inflammatory response by inhibiting the JAK2/STAT3 signaling pathway. Therefore, PGK1, a novel binding partner of ITI-H4, is expected to have cellular functions in the pathogenesis of ITI-H4-related inflammatory diseases.
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10
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The Long and the Short of It: NEAT1 and Cancer Cell Metabolism. Cancers (Basel) 2022; 14:cancers14184388. [PMID: 36139550 PMCID: PMC9497099 DOI: 10.3390/cancers14184388] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/05/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Altered metabolism is a hallmark of most cancers. The way that cancer cells regulate their energy production to fuel constant proliferation has been of interest with the hope that it may be exploited therapeutically. The long noncoding RNA, NEAT1, is often dysregulated in tumours. NEAT1 RNA can be transcribed as two isoforms with different lengths, with each variant responsible for different functions. This review explores how the isoforms contribute to cancer metabolism. Abstract The long noncoding RNA NEAT1 is known to be heavily dysregulated in many cancers. A single exon gene produces two isoforms, NEAT1_1 and NEAT1_2, through alternative 3′-end processing. As the longer isoform, NEAT1_2 is an essential scaffold for nuclear paraspeckle formation. It was previously thought that the short NEAT1_1 isoform only exists to keep the NEAT1 locus active for rapid paraspeckle formation. However, a recent glycolysis-enhancing function for NEAT1_1, contributing to cancer cell proliferation and the Warburg effect, has been demonstrated. Previous studies have mainly focused on quantifying total NEAT1 and NEAT1_2 expression levels. However, in light of the NEAT1_1 role in cancer cell metabolism, the contribution from specific NEAT1 isoforms is no longer clear. Here, the roles of NEAT1_1 and NEAT1_2 in metabolism and cancer progression are discussed.
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