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Shu Y, Yue J, Li Y, Yin Y, Wang J, Li T, He X, Liang S, Zhang G, Liu Z, Wang Y. Development of human lactate dehydrogenase a inhibitors: high-throughput screening, molecular dynamics simulation and enzyme activity assay. J Comput Aided Mol Des 2024; 38:28. [PMID: 39123063 DOI: 10.1007/s10822-024-00568-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: 03/04/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024]
Abstract
Lactate dehydrogenase A (LDHA) is highly expressed in many tumor cells and promotes the conversion of pyruvate to lactic acid in the glucose pathway, providing energy and synthetic precursors for rapid proliferation of tumor cells. Therefore, inhibition of LDHA has become a widely concerned tumor treatment strategy. However, the research and development of highly efficient and low toxic LDHA small molecule inhibitors still faces challenges. To discover potential inhibitors against LDHA, virtual screening based on molecular docking techniques was performed from Specs database of more than 260,000 compounds and Chemdiv-smart database of more than 1,000 compounds. Through molecular dynamics (MD) simulation studies, we identified 12 potential LDHA inhibitors, all of which can stably bind to human LDHA protein and form multiple interactions with its active central residues. In order to verify the inhibitory activities of these compounds, we established an enzyme activity assay system and measured their inhibitory effects on recombinant human LDHA. The results showed that Compound 6 could inhibit the catalytic effect of LDHA on pyruvate in a dose-dependent manner with an EC50 value of 14.54 ± 0.83 µM. Further in vitro experiments showed that Compound 6 could significantly inhibit the proliferation of various tumor cell lines such as pancreatic cancer cells and lung cancer cells, reduce intracellular lactic acid content and increase intracellular reactive oxygen species (ROS) level. In summary, through virtual screening and in vitro validation, we found that Compound 6 is a small molecule inhibitor for LDHA, providing a good lead compound for the research and development of LDHA related targeted anti-tumor drugs.
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Affiliation(s)
- Yuanyuan Shu
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Jianda Yue
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yaqi Li
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yekui Yin
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Jiaxu Wang
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Tingting Li
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Xiao He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Frontiers Science Center of Molecule Intelligent Syntheses, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- New York University, East China Normal University Center for Computational Chemistry, New York University Shanghai, Shanghai, 200062, China
| | - Songping Liang
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Gaihua Zhang
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China.
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China.
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China.
| | - Zhonghua Liu
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China.
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China.
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China.
| | - Ying Wang
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, 410081, China.
- Institute of Interdisciplinary Studies, Hunan Normal University, Changsha, 410081, China.
- Peptide and Small Molecule Drug R&D Plateform, Furong Laboratory, Hunan Normal University, Changsha, 410081, Hunan, China.
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Xie S, Liu H, Zhu S, Chen Z, Wang R, Zhang W, Xian H, Xiang R, Xia X, Sun Y, Long J, Wang Y, Wang M, Wang Y, Yu Y, Huang Z, Lu C, Xu Z, Liu H. Arsenic trioxide and p97 inhibitor synergize against acute myeloid leukemia by targeting nascent polypeptides and activating the ZAKα-JNK pathway. Cancer Gene Ther 2024:10.1038/s41417-024-00818-z. [PMID: 39122830 DOI: 10.1038/s41417-024-00818-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 07/25/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Arsenic trioxide (ATO) has exhibited remarkable efficacy in treating acute promyelocytic leukemia (APL), primarily through promoting the degradation of the PML-RARα fusion protein. However, ATO alone fails to confer any survival benefit to non-APL acute myeloid leukemia (AML) patients and exhibits limited efficacy when used in combination with other agents. Here, we explored the general toxicity mechanisms of ATO in APL and potential drugs that could be combined with ATO to exhibit synergistic lethal effects on other AML. We demonstrated that PML-RARα degradation and ROS upregulation were insufficient to cause APL cell death. Based on the protein synthesis of different AML cells and their sensitivity to ATO, we established a correlation between ATO-induced cell death and protein synthesis. Our findings indicated that ATO induced cell death by damaging nascent polypeptides and causing ribosome stalling, accompanied by the activation of the ZAKα-JNK pathway. Furthermore, ATO-induced stress activated the GCN2-ATF4 pathway, and ribosome-associated quality control cleared damaged proteins with the assistance of p97. Importantly, our data revealed that inhibiting p97 enhanced the effectiveness of ATO in killing AML cells. These explorations paved the way for identifying optimal synthetic lethal drugs to enhance ATO treatment on non-APL AML.
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Affiliation(s)
- Shufeng Xie
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China.
| | - Hui Liu
- Key Laboratory of Pediatric Hematology & Oncology of the Ministry of Health of China, Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shouhai Zhu
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - Zhihong Chen
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Ruiheng Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Wenjie Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Huajian Xian
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Rufang Xiang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
- Department of General Practice, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoli Xia
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Yong Sun
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Jinlan Long
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yuanli Wang
- Department of Hematology, Jingzhou Hospital Affiliated to Yangtze University, Jingzhou, Hubei, China
| | - Minghui Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Yixin Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Yaoyifu Yu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Zixuan Huang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Chaoqun Lu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China
| | - Zhenshu Xu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China.
| | - Han Liu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine and School of Life Sciences and Biotechnology, Shanghai, China.
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Fayed B, Shakartalla SB, Sabbah H, Dalle H, Tannira M, Senok A, Soliman SSM. Transcriptome Analysis of Human Dermal Cells Infected with Candida auris Identified Unique Pathogenesis/Defensive Mechanisms Particularly Ferroptosis. Mycopathologia 2024; 189:65. [PMID: 38990436 DOI: 10.1007/s11046-024-00868-9] [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: 12/23/2023] [Accepted: 06/10/2024] [Indexed: 07/12/2024]
Abstract
Candida auris is an emerging multi-drug resistant yeast that can cause life-threatening infections. A recent report clarified the ability of C. auris to form a biofilm with enhanced drug resistance properties in the host skin's deep layers. The formed biofilm may initiate further bloodstream spread and immune escape. Therefore, we propose that secreted chemicals from the biofilm may facilitate fungal pathogenesis. In response to this interaction, the host skin may develop potential defensive mechanisms. Comparative transcriptomics was performed on the host dermal cells in response to indirect interaction with C. auris biofilm through Transwell inserts compared to planktonic cells. Furthermore, the effect of antifungals including caspofungin and fluconazole was studied. The obtained data showed that the dermal cells exhibited different transcriptional responses. Kyoto Encyclopedia of Genes and Genomes and Reactome analyses identified potential defensive responses employed by the dermal cells and potential toxicity induced by C. auris. Additionally, our data indicated that the dominating toxic effect was mediated by ferroptosis; which was validated by qRT-PCR, cytotoxicity assay, and flow cytometry. On the other hand, the viability of C. auris biofilm was enhanced and accompanied by upregulation of MDR1, and KRE6 upon interaction with dermal cells; both genes play significant roles in drug resistance and biofilm maturation, respectively. This study for the first-time shed light on the dominating defensive responses of human dermal cells, microbe colonization site, to C. auris biofilm and its toxic effects. Further, it demonstrates how C. auris biofilm responds to the defensive mechanisms developed by the human dermal cells.
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Affiliation(s)
- Bahgat Fayed
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, UAE
- Chemistry of Natural and Microbial Products, National Research Centre, Cairo, Egypt
| | - Sarra B Shakartalla
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, UAE
- College of Medicine, University of Sharjah, P.O. Box 27272, Sharjah, UAE
- Faculty of Pharmacy, University of Gezira, P.O.Box. 21111, Wad Medani, Sudan
| | - Hassan Sabbah
- AbbVie BioPharmaceuticals, P.O. Box 118052, Dubai, UAE
| | - Hala Dalle
- AbbVie BioPharmaceuticals, Kuwait City, Kuwait
| | | | - Abiola Senok
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Building 14 Dubai Healthcare City, P.O.Box 505055, Dubai, UAE
| | - Sameh S M Soliman
- Research Institute for Medical and Health Sciences, University of Sharjah, P.O. Box 27272, Sharjah, UAE.
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, UAE.
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Wang D, Woodcock E, Yang X, Nishikawa H, Sviderskaya EV, Oshima M, Edwards C, Zhang Y, Korchev Y. Exploration of individual colorectal cancer cell responses to H 2O 2 eustress using hopping probe scanning ion conductance microscopy. Sci Bull (Beijing) 2024; 69:1909-1919. [PMID: 38644130 DOI: 10.1016/j.scib.2024.04.004] [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: 10/23/2023] [Revised: 03/12/2024] [Accepted: 03/25/2024] [Indexed: 04/23/2024]
Abstract
Colorectal cancer (CRC), a widespread malignancy, is closely associated with tumor microenvironmental hydrogen peroxide (H2O2) levels. Some clinical trials targeting H2O2 for cancer treatment have revealed its paradoxical role as a promoter of cancer progression. Investigating the dynamics of cancer cell H2O2 eustress at the single-cell level is crucial. In this study, non-contact hopping probe mode scanning ion conductance microscopy (HPICM) with high-sensitive Pt-functionalized nanoelectrodes was employed to measure dynamic extracellular to intracellular H2O2 gradients in individual colorectal cancer Caco-2 cells. We explored the relationship between cellular mechanical properties and H2O2 gradients. Exposure to 0.1 or 1 mmol/L H2O2 eustress increased the extracellular to intracellular H2O2 gradient from 0.3 to 1.91 or 3.04, respectively. Notably, cellular F-actin-dependent stiffness increased at 0.1 mmol/L but decreased at 1 mmol/L H2O2 eustress. This H2O2-induced stiffness modulated AKT activation positively and glutathione peroxidase 2 (GPX2) expression negatively. Our findings unveil the failure of some H2O2-targeted therapies due to their ineffectiveness in generating H2O2, which instead acts eustress to promote cancer cell survival. This research also reveals the complex interplay between physical properties and biochemical signaling in cancer cells' antioxidant defense, illuminating the exploitation of H2O2 eustress for survival at the single-cell level. Inhibiting GPX and/or catalase (CAT) enhances the cytotoxic activity of H2O2 eustress against CRC cells, which holds significant promise for developing innovative therapies targeting cancer and other H2O2-related inflammatory diseases.
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Affiliation(s)
- Dong Wang
- WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa 920-1192, Japan
| | - Emily Woodcock
- Department of Medicine, Imperial College London, London W12 0NN, United Kingdom; Cell Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's, University of London, London SW17 0RE, United Kingdom
| | - Xi Yang
- WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa 920-1192, Japan
| | - Hiromi Nishikawa
- WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa 920-1192, Japan
| | - Elena V Sviderskaya
- Cell Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's, University of London, London SW17 0RE, United Kingdom
| | - Masanobu Oshima
- WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa 920-1192, Japan
| | - Christopher Edwards
- Department of Medicine, Imperial College London, London W12 0NN, United Kingdom
| | - Yanjun Zhang
- WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa 920-1192, Japan; Department of Medicine, Imperial College London, London W12 0NN, United Kingdom.
| | - Yuri Korchev
- Department of Medicine, Imperial College London, London W12 0NN, United Kingdom; WPI Nano Life Science Institute (WPI-Nano LSI), Kanazawa University, Kanazawa 920-1192, Japan.
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Zhong J, Xu J, Chen X, Li N, Li S, Deng Z, Feng H, Ling X, Wang C, Zhou Z, Li L. Rbm46 inhibits reactive oxygen species in mouse embryonic stem cells through modulating BNIP3-mediated mitophagy. Biochem Biophys Res Commun 2024; 708:149779. [PMID: 38518724 DOI: 10.1016/j.bbrc.2024.149779] [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: 01/22/2024] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/24/2024]
Abstract
Embryonic stem cells (ESCs) exhibit a metabolic preference for glycolysis over oxidative phosphorylation to meet their substantial adenosine triphosphate (ATP) demands during self-renewal. This metabolic choice inherently maintains low mitochondrial activity and minimal reactive oxygen species (ROS) generation. Nonetheless, the intricate molecular mechanisms governing the restraint of ROS production and the mitigation of cellular damage remain incompletely elucidated. In this study, we reveal the pivotal role of RNA-binding motif protein 46 (RBM46) in ESCs, acting as a direct post transcriptional regulator of ROS levels by modulating BCL2/adenovirus E1B 19 kDa protein-interacting protein 3 (Bnip3) mRNA expression. Rbm46 knockout lead to diminished mitochondrial autophagy, culminating in elevated ROS within ESCs, disrupting the delicate balance required for healthy self-renewal. These findings provide insights into a novel mechanism governing ROS regulation in ESCs.
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Affiliation(s)
- Jinchen Zhong
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Jing Xu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Xiaoyang Chen
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Na Li
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Sha Li
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Zhiwen Deng
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Huimin Feng
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Xiaohan Ling
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Chenchen Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
| | - Zhi Zhou
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Lingsong Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
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Zhang Q, Fu J, Lin H, Xuan G, Zhang W, Chen L, Wang G. Shining light on carbon dots: Toward enhanced antibacterial activity for biofilm disruption. Biotechnol J 2024; 19:e2400156. [PMID: 38804136 DOI: 10.1002/biot.202400156] [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: 03/12/2024] [Revised: 04/22/2024] [Accepted: 05/06/2024] [Indexed: 05/29/2024]
Abstract
In spite of tremendous efforts dedicated to addressing bacterial infections and biofilm formation, the post-antibiotic ear continues to witness a gap between the established materials and an easily accessible yet biocompatible antibacterial reagent. Here we show carbon dots (CDs) synthesized via a single hydrothermal process can afford promising antibacterial activity that can be further enhanced by exposure to light. By using citric acid and polyethyleneimine as the precursors, the photoluminescence CDs can be produced within a one-pot, one-step hydrothermal reaction in only 2 h. The CDs demonstrate robust antibacterial properties against both Gram-positive and Gram-negative bacteria and, notably, a considerable enhancement of antibacterial effect can be observed upon photo-irradiation. Mechanistic insights reveal that the CDs generate singlet oxygen (1O2) when exposed to light, leading to an augmented reactive oxygen species level. The approach for disruption of biofilms and inhibition of biofilm formation by using the CDs has also been established. Our findings present a potential solution to combat antibacterial resistance and offer a path to reduce dependence on traditional antibiotics.
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Affiliation(s)
- Qingsong Zhang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Jianxin Fu
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Hong Lin
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Guanhua Xuan
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Weiwei Zhang
- College of Marine Sciences, Ningbo University, Ningbo, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Process and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Guoqing Wang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Zhang X, Wang Y, Lv J. STAT4 targets KISS1 to inhibit the oxidative damage, inflammation and neuronal apoptosis in experimental PD models by inactivating the MAPK pathway. Neurochem Int 2024; 175:105683. [PMID: 38341034 DOI: 10.1016/j.neuint.2024.105683] [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: 08/23/2023] [Revised: 01/16/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Oxidative stress and neuroinflammation are proven to play critical roles in the pathogenesis of Parkinson's disease (PD). As reported, patients with PD have lower level of STAT4 compared with healthy subjects. However, the biological functions and mechanisms of STAT4 in PD pathogenesis remain uncertain. This study aimed to investigate the roles and related mechanisms of STAT4 in PD development. METHODS The intraperitoneal injection of MPTP (20 mg/kg) dissolved in physiological saline was performed to mimic PD-like conditions in vivo. MPP + solution was prepared for cell model of PD. Cell viability was measured by CCK-8. Griess reaction was conducted to measure NO concentrations. The mRNA and protein levels were evaluated by RT-qPCR and western blotting. ROS generation was assessed by DCFH-DA. The levels of inflammatory cytokines were measured by ELISA. Cell apoptosis was examined by flow cytometry and western blotting. Moreover, the SH-SY5Y cells were treated with conditioned medium from LPS-stimulated microglia and subjected to CCK-8 assays and ELISA. Mechanistically, CHIP assays and luciferase reporter assays were performed to verify the binding relationship between KISS1 and STAT4. For in vivo analysis, the histological changes of midbrain tissues of mice were determined by hematoxylin and eosin staining. The expression of tyrosine hydroxylase (TH) was detected by immunohistochemistry staining. Iba-1 positive microglial cells in the striatum were assessed by immunofluorescence staining. RESULTS For in vitro analysis, STAT4 level was downregulated after MPP+ treatment, and STAT4 upregulation inhibited the oxidative damage, inflammation and apoptosis in SH-SY5Y cells. STAT4 bound at +215-228 region of KISS1, and KISS1 upregulation counteracted the protection of STAT4 upregulation against cell damage. Moreover, STAT4 upregulation inhibited cell viability loss and inflammation induced by conditioned medium from LPS-treated microglia, whereas KISS1 upregulation had the opposite effect. For in vivo analysis, the protective effects of STAT4 upregulation against inflammatory response, oxidative stress, dopaminergic neuronal loss and microglia activation were attenuated by KISS1 upregulation. Moreover, the inactivation of MAPK pathway caused by STAT4 upregulation was reversed by KISS1 upregulation, and MAPK inhibition attenuated the MPP+-induced inflammation, oxidative stress and apoptosis in SH-SY5Y cells. CONCLUSION STAT4 inhibits KISS1 to attenuate the oxidative damage, inflammation and neuronal apoptosis in PD by inactivating the MAPK pathway.
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Affiliation(s)
- XiaoLei Zhang
- Department of Neurology, Shanxi People's Hospital, Taiyuan 030012, China.
| | - Yu Wang
- Department of Neurology, Fifth Hospital of Shanxi Medical University, Taiyuan 030012, China
| | - Jia Lv
- Department of Neurology, Fifth Hospital of Shanxi Medical University, Taiyuan 030012, China
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Meher RK, Mir SA, Anisetti SS. In silico and in vitro investigation of dual targeting Prima-1 MET as precision therapeutic against lungs cancer. J Biomol Struct Dyn 2024; 42:4169-4184. [PMID: 37272907 DOI: 10.1080/07391102.2023.2219323] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 05/23/2023] [Indexed: 06/06/2023]
Abstract
This study emphasizes the explorations of binding of Prima-1MET with two targets, p53 a tumor suppressor protein, and tyrosine kinase of epidermal growth factor receptor. In silico investigations reveal that Prima-1MET showed robust binding with both targets. Molecular docking simulations demonstrated the binding affinity of Prima-1MET with p53 and tyrosine kinase was found to be -38.601 kJ/mol and -38.976 kJ/mol. In addition, the stability of Prima-1MET was explored by molecular dynamics simulation. Prima-1MET attains stability in the binding site of the respective protein till the simulation period is over. Moreover, the free binding energy ΔGbind was calculated by the molecular mechanics Poisson Boltzmann surface area method. The ΔGbind of Prima-1MET with tyrosine kinase was found to be -58.585 ± 0.327 kJ/mol and with p53 it was -35.910 ± 0.335 kJ/mol. Next, cytotoxicity of the Prima-1MET was evaluated using multiple cancer cell lines and the IC50 value were ranging between 4.5 and 30 μM. The cell death was identified by apoptosis assay. Further, the p53 and tyrosine kinase expression was monitored using immunofluorescence techniques, it was found Prima-1MET induces the expression of p53 protein and mimics the level of tyrosine kinase oncogenic target. Also, reactive oxygen species (ROS) and membrane potential activity of Prima-1MET was evaluated by using a lung cancer cell line. A significant decrease in intracellular ROS was observed and resulted in disruption of mitochondrial transmembrane potential. This study uncovers the underlying mechanism of Prima-1MET and could be helpful to design further leads against lung cancers.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rajesh Kumar Meher
- Advance Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Mumbai, India
- Department of Biotechnology and Bioinformatics, Sambalpur University, Burla, Odisha, India
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Ma H, Huang Y, Tian W, Liu J, Yan X, Ma L, Lai J. Endothelial transferrin receptor 1 contributes to thrombogenesis through cascade ferroptosis. Redox Biol 2024; 70:103041. [PMID: 38241836 PMCID: PMC10831316 DOI: 10.1016/j.redox.2024.103041] [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: 12/24/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 01/21/2024] Open
Abstract
Oxidative stress and iron accumulation-induced ferroptosis occurs in injured vascular cells and can promote thrombogenesis. Transferrin receptor 1 (encoded by the TFRC gene) is an initial element involved in iron transport and ferroptosis and is highly expressed in injured vascular tissues, but its role in thrombosis has not been determined. To explore the potential mechanism and therapeutic effect of TFRC on thrombogenesis, a DVT model of femoral veins (FVs) was established in rats, and weighted correlation network analysis (WGCNA) was used to identify TFRC as a hub protein that is associated with thrombus formation. TFRC was knocked down by adeno-associated virus (AAV) or lentivirus transduction in FVs or human umbilical vein endothelial cells (HUVECs), respectively. Thrombus characteristics and ferroptosis biomarkers were evaluated. Colocalization analysis, molecular docking and coimmunoprecipitation (co-IP) were used to evaluate protein interactions. Tissue-specific TFRC knockdown alleviated iron overload and redox stress, thereby preventing ferroptosis in injured FVs. Loss of TFRC in injured veins could alleviate thrombogenesis, reduce thrombus size and attenuate hypercoagulability. The protein level of thrombospondin-1 (THBS1) was increased in DVT tissues, and silencing TFRC decreased the protein level of THBS1. In vitro experiments further showed that TFRC and THBS1 were sensitive to erastin-induced ferroptosis and that TFRC knockdown reversed this effect. TFRC can interact with THBS1 in the domain spanning from TSR1-2 to TSR1-3 of THBS1. Amino acid sites, including GLN320 of TFRC and ASP502 of THBS1, could be potential pharmacological targets. Erastin induced ferroptosis affected extracellular THBS1 levels and weakened the interaction between TFRC and THBS1 both in vivo and in vitro, and promoted the interaction between THBS1 and CD47. This study revealed a linked relationship between venous ferroptosis and coagulation cascades. Controlling TFRC and ferroptosis in endothelial cells can be an efficient approach for preventing and treating thrombogenesis.
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Affiliation(s)
- Haotian Ma
- NHC Key Laboratory of Forensic Science, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, China; Institute of Forensic Injury, Bio-evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, China
| | - Yongtao Huang
- Department of Orthopedics, Ruihua Affiliated Hospital of Soochow University, Suzhou, China
| | - Wenrong Tian
- NHC Key Laboratory of Forensic Science, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, China; Institute of Forensic Injury, Bio-evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, China
| | - Jincen Liu
- NHC Key Laboratory of Forensic Science, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, China; Institute of Forensic Injury, Bio-evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, China
| | - Xinyue Yan
- NHC Key Laboratory of Forensic Science, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, China; Institute of Forensic Injury, Bio-evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, China
| | - Lei Ma
- NHC Key Laboratory of Forensic Science, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, China; Institute of Forensic Injury, Bio-evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, China
| | - Jianghua Lai
- NHC Key Laboratory of Forensic Science, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, China; Institute of Forensic Injury, Bio-evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, China.
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10
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Belykh DV, Pylina YI, Kustov AV, Startseva OM, Belykh ES, Smirnova NL, Shukhto OV, Berezin DB. Photosensitizing effects and physicochemical properties of chlorophyll a derivatives with hydrophilic oligoethylene glycol fragments at the macrocycle periphery. Photochem Photobiol Sci 2024; 23:409-420. [PMID: 38319518 DOI: 10.1007/s43630-023-00527-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: 07/17/2023] [Accepted: 12/19/2023] [Indexed: 02/07/2024]
Abstract
In this work, screening studies of the cytotoxic effect of chlorins with fragments of di-, tri-, and pentaethylene glycol at the macrocycle periphery in relation to HeLa, A549, and HT29 cells were performed. It is shown that, despite different hydrophobicity, all the compounds studied have a comparable photodynamic effect. The conjugate of chlorin e6 with pentaethylene glycol, which has the lowest tendency to association among the studied compounds with tropism for low density lipoproteins and the best characteristics of the formation of molecular complexes with Tween 80, has a significant difference in dark and photoinduced toxicity (ratio IC50(dark)/IC50(photo) approximately 2 orders of magnitude for all cell lines), which allows to hope for a sufficiently large "therapeutic window". A study of the interaction of this compound with HeLa cells shows that the substance penetrates the cell and, after red light irradiation induces ROS appearance inside the cell, associated, apparently, with the photogeneration of singlet oxygen. These data indicate that photoinduced toxic effects are caused by damage to intracellular structures as a result of oxidative stress. Programmed type of cell death characterized with caspase-3 induction is prevailing. So, the conjugate of chlorin e6 with pentaethylene glycol is a promising antitumor PS that can be successfully solubilized with Tween 80, which makes it suitable for further in vivo studies.
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Affiliation(s)
- D V Belykh
- Institute of Chemistry, Komi Scientific Center, Ural Branch of the Russian Academy of Sciences, 48, Pervomaiskaya St., Syktyvkar, 167982, Russia.
| | - Y I Pylina
- Institute of Biology of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 28, Kommunisticheskaya St., Syktyvkar, 167982, Russian Federation
| | - A V Kustov
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences (ISC RAS), 1, Akademicheskaya St., 153045, Ivanovo, Russian Federation
| | - O M Startseva
- Pitirim Sorokin Syktyvkar State University, 55, Oktyabrskiy Pr., Syktyvkar, 167001, Russian Federation
| | - E S Belykh
- Institute of Biology of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 28, Kommunisticheskaya St., Syktyvkar, 167982, Russian Federation
| | - N L Smirnova
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences (ISC RAS), 1, Akademicheskaya St., 153045, Ivanovo, Russian Federation
| | - O V Shukhto
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology (ISUCT), 7, Sheremetevskiy Ave., 153012, Ivanovo, Russian Federation
| | - D B Berezin
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology (ISUCT), 7, Sheremetevskiy Ave., 153012, Ivanovo, Russian Federation
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11
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Huang Q, Wu M, Pu Y, Zhou J, Zhang Y, Li R, Xia Y, Zhang Y, Ma Y. Inhibition of TNBC Cell Growth by Paroxetine: Induction of Apoptosis and Blockage of Autophagy Flux. Cancers (Basel) 2024; 16:885. [PMID: 38473249 DOI: 10.3390/cancers16050885] [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: 01/15/2024] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
The strategy of drug repurposing has gained traction in the field of cancer therapy as a means of discovering novel therapeutic uses for established pharmaceuticals. Paroxetine (PX), a selective serotonin reuptake inhibitor typically utilized in the treatment of depression, has demonstrated promise as an agent for combating cancer. Nevertheless, the specific functions and mechanisms by which PX operates in the context of triple-negative breast cancer (TNBC) remain ambiguous. This study aimed to examine the impact of PX on TNBC cells in vitro as both a standalone treatment and in conjunction with other pharmaceutical agents. Cell viability was measured using the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, apoptosis was assessed through flow cytometry, and the effects on signaling pathways were analyzed using RNA sequencing and Western blot techniques. Furthermore, a subcutaneous tumor model was utilized to assess the in vivo efficacy of combination therapy on tumor growth. The results of our study suggest that PX may activate the Ca2+-dependent mitochondria-mediated intrinsic apoptosis pathway in TNBC by potentially influencing the PI3K/AKT/mTOR pathway as well as by inducing cytoprotective autophagy. Additionally, the combination of PX and chemotherapeutic agents demonstrated moderate inhibitory effects on 4T1 tumor growth in an in vivo model. These findings indicate that PX may exert its effects on TNBC through modulation of critical molecular pathways, offering important implications for improving chemosensitivity and identifying potential therapeutic combinations for clinical use.
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Affiliation(s)
- Qianrui Huang
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Mengling Wu
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yamin Pu
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Junyou Zhou
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu 610041, China
- Department of Basic Medical Sciences & Forensic Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yiqian Zhang
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Ru Li
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Chengdu 610041, China
| | - Yong Xia
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
- Key Laboratory of Rehabilitation Medicine in Sichuan Province/Rehabilitation Medicine Research Institute, Chengdu 610041, China
| | - Yiwen Zhang
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yimei Ma
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu 610041, China
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12
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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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13
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Mei Y, Lei J, Liu W, Yue Z, Hu Q, Tao P, Li B, Zhao Y. Transcriptomic and Proteomic Analyses Unveil the Role of Nitrogen Metabolism in the Formation of Chinese Cabbage Petiole Spot. Int J Mol Sci 2024; 25:1366. [PMID: 38338646 PMCID: PMC10855159 DOI: 10.3390/ijms25031366] [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: 12/10/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 02/12/2024] Open
Abstract
Chinese cabbage is the most widely consumed vegetable crop due to its high nutritional value and rock-bottom price. Notably, the presence of the physiological disease petiole spot significantly impacts the appearance quality and marketability of Chinese cabbage. It is well known that excessive nitrogen fertilizer is a crucial factor in the occurrence of petiole spots; however, the mechanism by which excessive nitrogen triggers the formation of petiole spots is not yet clear. In this study, we found that petiole spots initially gather in the intercellular or extracellular regions, then gradually extend into intracellular regions, and finally affect adjacent cells, accompanied by cell death. Transcriptomic and proteomic as well as physiology analyses revealed that the genes/proteins involved in nitrogen metabolism exhibited different expression patterns in resistant and susceptible Chinese cabbage lines. The resistant Chinese cabbage line has high assimilation ability of NH4+, whereas the susceptible one accumulates excessive NH4+, thus inducing a burst of reactive oxygen species (ROS). These results introduce a novel perspective to the investigation of petiole spot induced by the nitrogen metabolism pathway, offering a theoretical foundation for the development of resistant strains in the control of petiole spot.
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Affiliation(s)
- Ying Mei
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
| | - Juanli Lei
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
| | - Wenqi Liu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
- College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
| | - Zhichen Yue
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
| | - Qizan Hu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
| | - Peng Tao
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
| | - Biyuan Li
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
| | - Yanting Zhao
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.T.)
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14
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Yang R, Gao W, Wang Z, Jian H, Peng L, Yu X, Xue P, Peng W, Li K, Zeng P. Polyphyllin I induced ferroptosis to suppress the progression of hepatocellular carcinoma through activation of the mitochondrial dysfunction via Nrf2/HO-1/GPX4 axis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 122:155135. [PMID: 37856990 DOI: 10.1016/j.phymed.2023.155135] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/14/2023] [Accepted: 09/29/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND Ferroptosis is an emerging iron-dependent programmed cell death mode characterized by lipid peroxidation and iron accumulation, closely associated with Hepatocellular Carcinoma (HCC) progression. Although the impact of Polyphyllin I (PPI), a prominent bioactive constituent derived from Paris polyphylla, on diverse malignancies has been established, the specific role and potential mechanistic pathways through which PPI modulates ferroptosis in HCC remain elusive. PURPOSE This study aimed to elucidate the anti-cancer properties and potential mechanisms of PPI in inducing ferroptosis and triggering mitochondrial injury in HCC. METHODS Cell viability was assessed using CCK-8 assays. EdU proliferation and colony formation assays were employed to evaluate cell proliferation. A wound-healing assay was performed to assess cell migration. Transwell assay was utilized to evaluate cell invasion. Ferroptosis was evaluated through the utilization of a FerroOrange fluorescent probe, malondialdehyde (MDA) and reduced glutathione (GSH) assay kits, DCFH-DA fluorescent probe, western blotting, and transmission electron microscopy (TEM) analysis. Molecular docking, immunofluorescence, and western blotting were employed to predict and validate the binding and interaction of PPI with Nrf2, HO-1, xCT, and GPX4. Mitochondrial structure and membrane potential changes were evaluated using JC-1 and Mito Tracker Green fluorescent probes. A nude mice xenograft model was constructed to determine the inhibitory effects and the levels of ferroptosis of PPI on HCC through hematoxylin and eosin (H&E), Prussian blue reaction, immunofluorescence staining, immunohistochemistry, and western blotting analysis, in vivo. RESULTS PPI exhibited dose-dependent inhibitory effects on the proliferation, invasion, and metastasis of HCC cells mediated by increasing reactive oxygen species (ROS) and MDA levels, promoting Fe2+ accumulation, depleting GSH, and suppressing the expression of xCT and GPX4, thereby inducing ferroptosis in HCC. The induction of ferroptosis by PPI was associated with the binding of PPI to Nrf2, HO-1, and GPX4 proteins, modulating the Nrf2/HO-1/GPX4 antioxidant axis. PPI also induced mitochondrial structural damage and decreased mitochondrial membrane potential (MMP). Inhibition of ferroptosis by ferrostatin-1 (Fer-1) mitigated the mitochondrial disruption induced by PPI. In vivo, PPI inhibited Nrf2/HO-1/GPX4 axis-induced ferroptosis, impeding HCC growth similar to the effects of sorafenib. CONCLUSION These results demonstrated that PPI intervention can suppress the proliferation, invasion, and metastasis of HCC cells by enhancing mitochondrial disruption and inducing ferroptosis via the Nrf2/HO-1/GPX4 axis. Consequently, our research advances the frontiers of pharmacodynamics and deepens our comprehension of the intricate mechanisms underpinning PPI. Furthermore, it has yielded an innovative treatment stratagem rooted in the tenets of Traditional Chinese Medicine (TCM), thereby furnishing a novel therapeutic avenue for addressing HCC.
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Affiliation(s)
- Renyi Yang
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China
| | - Wenhui Gao
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Hunan, 410208, China
| | - Zhibing Wang
- School of Integrated Chinese and Western Medicine, Key Laboratory of Hunan Provincial for Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Hunan, 410208, China
| | - Huiying Jian
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China
| | - Lian Peng
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Hunan, 410208, China
| | - Xiaopeng Yu
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China
| | - Peisen Xue
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China
| | - Wei Peng
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China.
| | - Kexiong Li
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China.
| | - Puhua Zeng
- Hunan Provincial Hospital of Integrated Traditional Chinese and Western, Cancer Research Institute of Hunan Academy of Traditional Chinese Medicine, Hunan Academy of Chinese Medicine, Hunan, 410006, China.
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15
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Sun J, Li L, Xiong L, Chen F, She L, Tang H, Zeng Y, Duan Y, Li L, Wang W, Li G, Zhao X, Liang G. Parthenolide alleviates cognitive dysfunction and neurotoxicity via regulation of AMPK/GSK3β(Ser9)/Nrf2 signaling pathway. Biomed Pharmacother 2023; 169:115909. [PMID: 37992573 DOI: 10.1016/j.biopha.2023.115909] [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: 09/14/2023] [Revised: 11/13/2023] [Accepted: 11/20/2023] [Indexed: 11/24/2023] Open
Abstract
Alzheimer's disease (AD) stands as the predominant age-related neurodegenerative disorder, for which efficacious treatment remains elusive. An auspicious avenue for this disease lies in natural compounds sourced from tranditional medicine and plant origins. Parthenolide (PTN) is a natural product with multiple biological functionsand. Recent investigations have illuminated PTN's protective properties against neurological maladies; however, its potential therapeutic role against AD remains uncharted. This study aims to explore the role of PTN in treating AD. Our in vitro findings underscore PTN's bioactivity, as evidenced by its capacity to curtail apoptosis, reduce reactive oxygen species (ROS) production, and restore mitochondrial membrane potential in PC12 cells. Moreover, PTN treatment demonstrates a capacity to ameliorate deficits in spatial learning and memory in the 3 ×Tg-AD murine model. Notably, PTN's therapeutic efficacy surpasses that of a clinical agent, donepezil. Mechanistically, PTN's neuroprotective effects stem from its adept regulation of the AMPK/GSK3β(ser9)/Nrf2 signaling pathway and protection on neuronal cells from ROS-related apoptosis. Although the molecular target and the pre-clinical evaluations of PTN need to be further explored, this study indicates PTN as a potential agent or lead compound for the drug development against AD.
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Affiliation(s)
- Jinfeng Sun
- Department of Pharmacy and Institute of Inflammation, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China; Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China; Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin 133002, China
| | - Liwei Li
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Li Xiong
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Fan Chen
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Lingyu She
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Hao Tang
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Yuqing Zeng
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Ying Duan
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin 133002, China
| | - Luyao Li
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Wei Wang
- Affiliated Yongkang First People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310012, China
| | - Gao Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin 133002, China.
| | - Xia Zhao
- Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China; Affiliated Yongkang First People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310012, China.
| | - Guang Liang
- Department of Pharmacy and Institute of Inflammation, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China; Zhejiang TCM Key Laboratory of Pharmacology and Translational Research of Natural Products, School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 310014, China.
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16
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Zhao Q, Liu F, Song C, Zhai T, He Z, Ma L, Zhao X, Jia Z, Song S. Diffusible signal factor primes plant immunity against Xanthomonas campestris pv. campestris ( Xcc) via JA signaling in Arabidopsis and Brassica oleracea. Front Cell Infect Microbiol 2023; 13:1203582. [PMID: 37404719 PMCID: PMC10315614 DOI: 10.3389/fcimb.2023.1203582] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/16/2023] [Indexed: 07/06/2023] Open
Abstract
Background Many Gram-negative bacteria use quorum sensing (QS) signal molecules to monitor their local population density and to coordinate their collective behaviors. The diffusible signal factor (DSF) family represents an intriguing type of QS signal to mediate intraspecies and interspecies communication. Recently, accumulating evidence demonstrates the role of DSF in mediating inter-kingdom communication between DSF-producing bacteria and plants. However, the regulatory mechanism of DSF during the Xanthomonas-plant interactions remain unclear. Methods Plants were pretreated with different concentration of DSF and subsequent inoculated with pathogen Xanthomonas campestris pv. campestris (Xcc). Pathogenicity, phynotypic analysis, transcriptome combined with metabolome analysis, genetic analysis and gene expression analysis were used to evaluate the priming effects of DSF on plant disease resistance. Results We found that the low concentration of DSF could prime plant immunity against Xcc in both Brassica oleracea and Arabidopsis thaliana. Pretreatment with DSF and subsequent pathogen invasion triggered an augmented burst of ROS by DCFH-DA and DAB staining. CAT application could attenuate the level of ROS induced by DSF. The expression of RBOHD and RBOHF were up-regulated and the activities of antioxidases POD increased after DSF treatment followed by Xcc inoculation. Transcriptome combined with metabolome analysis showed that plant hormone jasmonic acid (JA) signaling involved in DSF-primed resistance to Xcc in Arabidopsis. The expression of JA synthesis genes (AOC2, AOS, LOX2, OPR3 and JAR1), transportor gene (JAT1), regulator genes (JAZ1 and MYC2) and responsive genes (VSP2, PDF1.2 and Thi2.1) were up-regulated significantly by DSF upon Xcc challenge. The primed effects were not observed in JA relevant mutant coi1-1 and jar1-1. Conclusion These results indicated that DSF-primed resistance against Xcc was dependent on the JA pathway. Our findings advanced the understanding of QS signal-mediated communication and provide a new strategy for the control of black rot in Brassica oleracea.
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Affiliation(s)
- Qian Zhao
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
- Hebei Technology Innovation Center of Microbiological Control on Main Crop Disease, Shijiazhuang, China
| | - Fang Liu
- Shijiazhuang Academy of Agricultural and Forestry Sciences, Shijiazhuang, China
| | - Cong Song
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
- Hebei Technology Innovation Center of Microbiological Control on Main Crop Disease, Shijiazhuang, China
| | - Tingting Zhai
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
| | - Ziwei He
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
| | - Limei Ma
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
- Hebei Technology Innovation Center of Microbiological Control on Main Crop Disease, Shijiazhuang, China
| | - Xuemeng Zhao
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
| | - Zhenhua Jia
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
- Hebei Technology Innovation Center of Microbiological Control on Main Crop Disease, Shijiazhuang, China
| | - Shuishan Song
- Biology Institute, Hebei Academy of Sciences, Shijiazhuang, China
- Hebei Technology Innovation Center of Microbiological Control on Main Crop Disease, Shijiazhuang, China
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Liu T, Xia Q, Lv Y, Wang Z, Zhu S, Qin W, Yang Y, Liu T, Wang X, Zhao Z, Ma H, Jia L, Zhang H, Xu Z, Li N. ErZhiFormula prevents UV-induced skin photoaging by Nrf2/HO-1/NQO1 signaling: An in vitro and in vivo studies. JOURNAL OF ETHNOPHARMACOLOGY 2023; 309:115935. [PMID: 36414213 DOI: 10.1016/j.jep.2022.115935] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE ErZhiFormula (EZF) is a classical traditional Chinese medicinal formulation. It can be used to treat liver and kidney yin deficiency, dizziness, lumbar debility, insomnia, nocturnal emission, lower extremity weakness, and other aging-related diseases. However, the protective effect of EZF in skin photoaging and its potential mechanism has not been clarified. AIM OF THE STUDY This study aims to explore the role of EZF in the skin photoaging mechanism induced by UV radiation. MATERIALS AND METHODS Ultra Performance Liquid Chromatography (UPLC) was used to identify the fingerprint of EZF. The mice were irradiated with UVA and UVB to establish the photoaging model in vivo. Human immortalized keratinocytes (HaCaT) were irradiated with UVB to establish the photoaging model in vitro. The activity of cells was detected by CCK-8 and LDH kits, the level of reactive oxygen species was detected by DCF fluorescent probe, and the apoptosis was detected by PE annexin V and 7-Amino-Actinomycin (7-AAD) staining. Comet assay was used to detect cell DNA damage. The antioxidant enzyme levels in cell and mouse serum were detected by antioxidant kit, and Western blot was used to detect protein expression. RESULTS We found that EZF contain many active ingredients, including salidroside, specnuezhenide, isoquercitrin, etc. EZF can improve the photoaging of HaCaT cells and mouse skin caused by UV radiation. The results of animal experiments are consistent with those of cell experiments. Combined with Western blot analysis, we found that EZF finally played an anti-skin photoaging role by regulating the Nrf2/HO-1/NQO1 pathway. CONCLUSIONS EZF can protect skin from UV-induced photoaging by regulating the Nrf2/HO-1/NQO1 signal pathway. EZF may become a traditional Chinese medicine with the potential to prevent skin photoaging.
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Affiliation(s)
- Tao Liu
- School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - QingMei Xia
- School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yingshuang Lv
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Zijing Wang
- School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Shan Zhu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Wenxiao Qin
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yi Yang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Tao Liu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xiang Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Zhiyue Zhao
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Hongfei Ma
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Linlin Jia
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Han Zhang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Zongpei Xu
- School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Nan Li
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Gou M, Li J, Yi L, Li H, Ye X, Wang H, Liu L, Sun B, Zhang S, Zhu Z, Liu J, Liu L. Reprogramming of ovarian aging epigenome by resveratrol. PNAS NEXUS 2022; 2:pgac310. [PMID: 36743471 PMCID: PMC9896145 DOI: 10.1093/pnasnexus/pgac310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 12/23/2022] [Indexed: 12/26/2022]
Abstract
Resveratrol is an antiaging, antioxidant, and anti-inflammatory natural polyphenolic compound. Growing evidence indicates that resveratrol has potential therapeutic effects for improving aging ovarian function. However, the mechanisms underlying prolonged reproductive longevity remain elusive. We found that resveratrol ameliorates ovarian aging transcriptome, some of which are associated with specific changes in methylome. In addition to known aging transcriptome of oocytes and granulosa cells such as decline in oxidoreductase activity, metabolism and mitochondria function, and elevated DNA damage and apoptosis, actin cytoskeleton are notably downregulated with age, and these defects are mostly rescued by resveratrol. Moreover, the aging-associated hypermethylation of actin cytoskeleton is decreased by resveratrol. In contrast, deletion of Tet2, involved in DNA demethylation, abrogates resveratrol-reprogrammed ovarian aging transcriptome. Consistently, Tet2 deficiency results in additional altered pathways as shown by increased mTOR and Wnt signaling, as well as reduced DNA repair and actin cytoskeleton with mouse age. Moreover, genes associated with oxidoreductase activity and oxidation-reduction process were hypermethylated in Tet2-deficient oocytes from middle-age mice treated with resveratrol, indicating that loss of Tet2 abolishes the antioxidant effect of resveratrol. Taking together, our finding provides a comprehensive landscape of transcriptome and epigenetic changes associated with ovarian aging that can be reprogrammed by resveratrol administration, and suggests that aberrantly increased DNA methylation by Tet2 deficiency promotes additional aging epigenome that cannot be effectively restored to younger state by resveratrol.
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Affiliation(s)
| | | | | | - Huiyu Li
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Xiaoying Ye
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Huasong Wang
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Linlin Liu
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Baofa Sun
- Department of Zoology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Song Zhang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | | | - Jiang Liu
- To whom correspondence should be addressed.
| | - Lin Liu
- To whom correspondence should be addressed.
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A Novel RANKL-Targeted Furoquinoline Alkaloid Ameliorates Bone Loss in Ovariectomized Osteoporosis through Inhibiting the NF-κB Signal Pathway and Reducing Reactive Oxygen Species. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5982014. [PMID: 36388169 PMCID: PMC9652067 DOI: 10.1155/2022/5982014] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 08/01/2022] [Accepted: 09/14/2022] [Indexed: 11/06/2022]
Abstract
Dysregulation of osteoclast-osteoblast balance, resulting in abnormal bone remodeling, is responsible for postmenopausal osteoporosis (PMOP) or other secondary forms of osteoporosis. We demonstrated that dictamnine (DIC), a novel RANKL-targeted furoquinoline alkaloid, inhibits osteoclastogenesis by facilitating the activities of reactive oxygen species (ROS), NF-κB, and NFATc1 in vitro and prevents the development of OVX-induced osteoporosis mouse models in vivo. Methods. The docking mechanism of DIC and RANKL was initially identified by protein–ligand molecular docking. RNA sequencing was performed and analyzed to reveal the potential mechanism and signaling pathway of the antiosteoporosis effects of DIC. To verify the sequencing results, we examined the impact of DIC on RANKL-induced osteoclast differentiation, bone resorption, F-actin ring production, ROS generation, and NF-κB activation in osteoclasts in vitro. Moreover, a luciferase assay was performed to determine the binding and transcriptional activity of Nrf2 and NF-κB. The in vivo efficacy of DIC was assessed with an ovariectomy- (OVX-) induced osteoporosis model, which was analyzed using micro-CT and bone histomorphometry. Results. The molecular docking results indicated that DIC could bind particularly to RANKL. RNA-seq confirmed that DIC could regulate the osteoclast-related pathway. DIC suppressed osteoclastogenesis, bone resorption, F-actin belt formation, osteoclast-specific gene expression, and ROS activity by preventing NFATc1 expression and affecting NF-κB signaling pathways in vitro. The luciferase assay showed that DIC not only suppressed the activity of Nrf2 but also contributed to the combination of Nrf2 and NF-κB. Our in vivo study indicated that DIC protects against OVX-induced osteoporosis and preserves bone volume by inhibiting osteoclast activity and function. Conclusions. DIC can ameliorate osteoclast formation and OVX-induced osteoporosis and therefore is a potential therapeutic treatment for osteoporosis.
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Eidizade F, Soukhtanloo M, Zhiani R, Mehrzad J, Mirzavi F. Inhibition of glioblastoma proliferation, invasion, and migration by Urolithin B through inducing G0/G1 arrest and targeting MMP-2/-9 expression and activity. Biofactors 2022; 49:379-389. [PMID: 36310375 DOI: 10.1002/biof.1915] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022]
Abstract
One kind of brain cancer with a dismal prognosis is called glioblastoma multiforme (GBM) due to its high growth rate and widespread tumor cell invasion into various areas of the brain. To improve therapeutic approaches, the objective of this research investigates the cytotoxic, anti-metastatic, and apoptotic effect of urolithin-B (UB) as a bioactive metabolite of ellagitannins (ETs) on GBM U87 cells. The malignant GBM cell line (U87) was examined for apoptosis rate, cell cycle analysis, cell viability, mRNA expressions of several apoptotic and metastasis-associated genes, production of reactive oxygen species (ROS), MMP-2, and MMP-9 activity and protein expression, and migration ability. The findings revealed that UB decreased U87 GBM viability in a dose-dependent manner and NIH/3T3 normal cells with the IC50 value of 30 and 55 μM after 24 h, respectively. UB also induces necrosis and G0/G1 cell cycle arrest in U87 cells. UB also increases ROS production and caused down-regulation of Bcl2 and up-regulation of Bax apoptotic genes. Additionally, treatment of UB reduced the migration of U87 cells. The protein levels, mRNA expression, and the MMP-2 and MMP-9 enzyme activities also decreased concentration-dependently. So, due to the non-toxic nature of UB and its ability to induce apoptosis and reduce the U87 GBM cell invasion and migration, after more research, it can be regarded as a promising new anti-GBM compound.
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Affiliation(s)
- Fateme Eidizade
- Department of Biochemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Mohammad Soukhtanloo
- Department of Biochemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Rahele Zhiani
- Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
- New Materials Technology and Processing Research Center, Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Jamshid Mehrzad
- Department of Biochemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
| | - Farshad Mirzavi
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
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Ye X, Zhang P, Zhang Y, Luan J, Xu C, Wu Z, Ju D, Hu W. GSDMD contributes to myocardial reperfusion injury by regulating pyroptosis. Front Immunol 2022; 13:893914. [PMID: 36217543 PMCID: PMC9546776 DOI: 10.3389/fimmu.2022.893914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundGasdermin D (GSDMD) plays an essential role in the pathway of pyroptosis. However, whether GSDMD participates in myocardial ischaemia/reperfusion injury (MI/RI) remains poorly understood.MethodsSerum levels of GSDMD and IL-18 in ST-segment elevation myocardial infarction (STEMI) patients were measured by ELISA. The expression of GSDMD and GSDMD N-terminal (GSDMD-NT) in vivo and in vitro was assessed by western blot and immunofluorescence staining. GSDMD-/- mice and wild type (WT) mice were induced MI/RI, followed by cardiac ultrasound and histological analysis.ResultsClinically, patients suffering from STEMI after percutaneous coronary intervention (PCI) exhibited higher levels of GSDMD and IL-18 than that in the controls. In vitro, the cleavage of GSDMD was significantly upregulated in macrophages exposed to hypoxia/reoxygenation or H2O2. In vivo, the levels of GSDMD and GSDMD-NT increased notably after MI/RI, especially in macrophages infiltrating in the infarct area. Moreover, compared with WT mice, GSDMD-/- mice showed reduced infarct size (25.45 ± 3.07% versus 36.47 ± 3.72%), improved left ventricular ejection fraction (37.71 ± 1.81% versus 29.44 ± 2.28%) and left ventricular fractional shortening (18.01 ± 0.97% versus 13.62 ± 1.15%) as well as attenuated pathological damage after I/R injury, along with reduced levels of proinflammatory cytokines and decreased infiltration of neutrophils.ConclusionsOur study revealed that GSDMD deficiency significantly alleviated the inflammatory response by regulating pyroptosis, reduced the infarct size and preserved cardiac function after MI/RI, thus providing a potential strategy for the treatment of myocardial reperfusion injury.
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Affiliation(s)
- Xiaomiao Ye
- Department of Cardiology, Minhang Hospital, Fudan University, Shanghai, China
| | - Peng Zhang
- Department of Cardiology, Minhang Hospital, Fudan University, Shanghai, China
| | - Yuting Zhang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, China
| | - Jingyun Luan
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, China
| | - Caili Xu
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, China
| | - Zhengyu Wu
- TAU Cambridge Ltd, Cambridge, United Kingdom
| | - Dianwen Ju
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, China
- Minhang Hospital, Fudan University, Shanghai, China
- *Correspondence: Dianwen Ju, ; Wei Hu,
| | - Wei Hu
- Department of Cardiology, Minhang Hospital, Fudan University, Shanghai, China
- *Correspondence: Dianwen Ju, ; Wei Hu,
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22
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Hahner F, Moll F, Warwick T, Hebchen DM, Buchmann GK, Epah J, Abplanalp W, Schader T, Günther S, Gilsbach R, Brandes RP, Schröder K. Nox4 promotes endothelial differentiation through chromatin remodeling. Redox Biol 2022; 55:102381. [PMID: 35810713 PMCID: PMC9287364 DOI: 10.1016/j.redox.2022.102381] [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: 05/27/2022] [Accepted: 06/20/2022] [Indexed: 01/09/2023] Open
Abstract
RATIONALE Nox4 is a constitutively active NADPH oxidase that constantly produces low levels of H2O2. Thereby, Nox4 contributes to cell homeostasis and long-term processes, such as differentiation. The high expression of Nox4 seen in endothelial cells contrasts with the low abundance of Nox4 in stem cells, which are accordingly characterized by low levels of H2O2. We hypothesize that Nox4 is a major contributor to endothelial differentiation, is induced during the process of differentiation, and facilitates homeostasis of the resulting endothelial cells. OBJECTIVE To determine the role of No×4 in differentiation of murine inducible pluripotent stem cells (miPSC) into endothelial cells (ECs). METHODS AND RESULTS miPSC, generated from mouse embryonic wildtype (WT) and Nox4-/- fibroblasts, were differentiated into endothelial cells (miPSC-EC) by stimulation with BMP4 and VEGF. During this process, Nox4 expression increased and knockout of Nox4 prolonged the abundance of pluripotency markers, while expression of endothelial markers was delayed in differentiating Nox4-depleted iPSCs. Eventually, angiogenic capacity of iPSC-ECs is reduced in Nox4 deficient cells, indicating that an absence of Nox4 diminishes stability of the reached phenotype. As an underlying mechanism, we identified JmjD3 as a redox target of Nox4. iPSC-ECs lacking Nox4 display a lower nuclear abundance of the histone demethylase JmjD3, resulting in an increased triple methylation of histone 3 (H3K27me3), which serves as a repressive mark for several genes involved in differentiation. CONCLUSIONS Nox4 promotes differentiation of miPSCs into ECs by oxidation of JmjD3 and subsequent demethylation of H3K27me3, which forced endothelial differentiation and stability.
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Affiliation(s)
- F Hahner
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - F Moll
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - T Warwick
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - D M Hebchen
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - G K Buchmann
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - J Epah
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - W Abplanalp
- Institute for Cardiovascular Regeneration, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - T Schader
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - S Günther
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - R Gilsbach
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - R P Brandes
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany
| | - K Schröder
- Institute for Cardiovascular Physiology, Goethe University, Frankfurt, Germany; German Center of Cardiovascular Research (DZHK), Partner Site RheinMain, Frankfurt, Germany.
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Detection and Quantification of Nanoparticle-Induced Intracellular ROS in Live Cells by Laser Scanning Confocal Microscopy. Methods 2022; 207:11-19. [PMID: 36028162 DOI: 10.1016/j.ymeth.2022.08.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/29/2022] [Accepted: 08/12/2022] [Indexed: 12/07/2022] Open
Abstract
All living organisms utilise reactive oxygen species (ROS) for essential cellular functions, the majority of which involve signal transduction pathways, such as enzyme regulation, cell growth and differentiation signalling, and inflammation mediation. Increased ROS in cancer cells can be caused by abnormalities in the tumor environment. However, using fluorescence microscopy to detect and quantify ROS changes in biological systems is difficult for several reasons: (1) lack of specificity of ROS-sensitive probes, (2) high turnover of ROS species, (3) rapid decrease in ROS fluorescence with time, and (4) detection and quantification techniques with insufficient sensitivity. Existing approaches to ROS measurement using confocal microscopy imaging focus solely on ROS detection rather than quantification. A novel fluorescence-based ROS detection and quantification technique has been developed for the purpose of resolving the limitations of existing methods. In general, ROS is detected by fluorescence using instrumentation such as flow cytometry and laser scanning confocal microscopy. However, these approaches confirm only the presence or absence of ROS; they are not quantitative, which is essential for therapeutic applications. In the newly developed technique, cerium-based ROS-generating nanoparticles have been used to elevate the ROS in HT-1080 fibrosarcoma cells. The elevated ROS levels are detected using an H2DCFDA fluorescence probe, which is used widely for this application, and captured as digital images using a 488 nm fluorescence channel. Quantification of the ROS is achieved using script in MATLAB software to convert the fluorescence intensities to numerical values. Thus, this technique nearly simultaneously integrates both detection and quantification of the ROS, which provides the statistical justification necessary to support therapeutic translation.
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Qin S, Li B, Ming H, Nice EC, Zou B, Huang C. Harnessing redox signaling to overcome therapeutic-resistant cancer dormancy. Biochim Biophys Acta Rev Cancer 2022; 1877:188749. [PMID: 35716972 DOI: 10.1016/j.bbcan.2022.188749] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/09/2022] [Accepted: 06/09/2022] [Indexed: 02/07/2023]
Abstract
Dormancy occurs when cells preserve viability but stop proliferating, which is considered an important cause of tumor relapse, which may occur many years after clinical remission. Since the life cycle of dormant cancer cells is affected by both intracellular and extracellular factors, gene mutation or epigenetic regulation of tumor cells may not fully explain the mechanisms involved. Recent studies have indicated that redox signaling regulates the formation, maintenance, and reactivation of dormant cancer cells by modulating intracellular signaling pathways and the extracellular environment, which provides a molecular explanation for the life cycle of dormant tumor cells. Indeed, redox signaling regulates the onset of dormancy by balancing the intrinsic pathways, the extrinsic environment, and the response to therapy. In addition, redox signaling sustains dormancy by managing stress homeostasis, maintaining stemness and immunogenic equilibrium. However, studies on dormancy reactivation are still limited, partly explained by redox-mediated activation of lipid metabolism and the transition from the tumor microenvironment to inflammation. Encouragingly, several drug combination strategies based on redox biology are currently under clinical evaluation. Continuing to gain an in-depth understanding of redox regulation and develop specific methods targeting redox modification holds the promise to accelerate the development of strategies to treat dormant tumors and benefit cancer patients.
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Affiliation(s)
- Siyuan Qin
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, PR China
| | - Bowen Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, PR China
| | - Hui Ming
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, PR China
| | - Edouard C Nice
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Bingwen Zou
- Department of Thoracic Oncology and Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, PR China.
| | - Canhua Huang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital and West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, PR China.
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yingBai Y, meiCheng Y, Wang W, Yang L, Yang Y. In vivo and in vitro studies of Alloimperatorin induced autophagy in cervical cancer cells via reactive oxygen species pathway. Bioengineered 2022; 13:14299-14314. [PMID: 36708242 PMCID: PMC9995126 DOI: 10.1080/21655979.2022.2084243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/19/2022] [Accepted: 05/25/2022] [Indexed: 01/29/2023] Open
Abstract
Alloimperatorin (Alloi) has been shown to have anti-proliferative effects in our previous studies. we aimed to investigate whether Alloimperatorin induces autophagy through the reactive oxygen species (ROS) pathway and anticancer activity in vivo. The anti-proliferative effect of Alloimperatorin was evaluated using a cell counting kit (CCK-8 kit). Apoptosis was detected using flow cytometry. Confocal microscopy, immunofluorescence, and mRFP-GFP-LC3 lentivirus transfection were used to verify autophagy. Electron microscopy detection of autophagosomes was induced by Alloimperatorin. Western blotting was used to detect autophagy proteins in HeLa and SiHa cells. A xenograft model was used to monitor the inhibitory effect of Alloimperatorin on tumor growth in nude mice. The results showed that Alloimperatorin induced ROS production and inhibited the proliferation of HeLa and SiHa cells. Furthermore, Alloimperatorin increased the apoptosis rate in HeLa and SiHa cells. Confocal microscopy fluorescence indicated that Alloimperatorin increased autophagy fluorescence of HeLa and SiHa cells. mRFP-GFP-LC3 lentivirus transfection and electron microscopy demonstrated that Alloimperatorin increased autophagy in HeLa and SiHa cells. Western blotting showed that Alloimperatorin induced the expression of autophagy proteins in HeLa and SiHa cells. However, N-acetylcysteine reversed the autophagy. These results demonstrate that Alloimperatorin can induce autophagy in HeLa and SiHa cells through the ROS pathway. In vivo xenograft experiments showed that Alloimperatorin could inhibit tumor growth in nude mice. Alloimperatorin is expected to be an effective new drug for cervical cancer treatment.Abbreviations: ROS, reactive oxygen species; Alloi, Alloimperatorin; CCK-8, Cell Counting Kit-8; NAC, N-acetyl-L-cysteine; DCFH-DA, 2,7-dichlorodihydrofluorescein diacetate; OD, optical density; PBS, phosphate buffer solution; BCA, bicinchoninic acid; DAPI, 4,6-diamidino-2-phenylindole; DMSO, dimethyl sulfoxide.
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Affiliation(s)
- Ying yingBai
- The First Clinical Medical College of Lanzhou University, Lanzhou, PR China
| | - Yue meiCheng
- The First Clinical Medical College of Lanzhou University, Lanzhou, PR China
| | - Wenhua Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou, PR China
| | - Lijuan Yang
- The First Clinical Medical College of Lanzhou University, Lanzhou, PR China
| | - Yongxiu Yang
- The First Clinical Medical College of Lanzhou University, Lanzhou, PR China
- Department of Obstetrics and Gynecology, First Hospital of Lanzhou University, Lanzhou, PR China
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26
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Trayford C, Crosbie D, Rademakers T, van Blitterswijk C, Nuijts R, Ferrari S, Habibovic P, LaPointe V, Dickman M, van Rijt S. Mesoporous Silica-Coated Gold Nanoparticles for Multimodal Imaging and Reactive Oxygen Species Sensing of Stem Cells. ACS APPLIED NANO MATERIALS 2022; 5:3237-3251. [PMID: 35372794 PMCID: PMC8961743 DOI: 10.1021/acsanm.1c03640] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Stem cell (SC)-based therapies hold the potential to revolutionize therapeutics by enhancing the body's natural repair processes. Currently, there are only three SC therapies with marketing authorization within the European Union. To optimize outcomes, it is important to understand the biodistribution and behavior of transplanted SCs in vivo. A variety of imaging agents have been developed to trace SCs; however, they mostly lack the ability to simultaneously monitor the SC function and biodistribution at high resolutions. Here, we report the synthesis and application of a nanoparticle (NP) construct consisting of a gold NP core coated with rhodamine B isothiocyanate (RITC)-doped mesoporous silica (AuMS). The MS layer further contained a thiol-modified internal surface and an amine-modified external surface for dye conjugation. Highly fluorescent AuMS of three different sizes were successfully synthesized. The NPs were non-toxic and efficiently taken up by limbal epithelial SCs (LESCs). We further showed that we can functionalize AuMS with a reactive oxygen species (ROS)-sensitive fluorescent dye using two methods, loading the probe into the mesopores, with or without additional capping by a lipid bilayer, and by covalent attachment to surface and/or mesoporous-functionalized thiol groups. All four formulations displayed a ROS concentration-dependent increase in fluorescence. Further, in an ex vivo SC transplantation model, a combination of optical coherence tomography and fluorescence microscopy was used to synergistically identify AuMS-labeled LESC distribution at micrometer resolution. Our AuMS constructs allow for multimodal imaging and simultaneous ROS sensing of SCs and represent a promising tool for in vivo SC tracing.
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Affiliation(s)
- Chloe Trayford
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Darragh Crosbie
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Timo Rademakers
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Clemens van Blitterswijk
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Rudy Nuijts
- Department
of Ophthalmology, University Eye Clinic
Maastricht, University Medical Center+, P. Debyelaan 25, 6202 AZ Maastricht, The Netherlands
| | - Stefano Ferrari
- Fondazione
Banca degli Occhi del Veneto, Via Paccagnella 11, 30174 Venice, Italy
| | - Pamela Habibovic
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Vanessa LaPointe
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Mor Dickman
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
- Department
of Ophthalmology, University Eye Clinic
Maastricht, University Medical Center+, P. Debyelaan 25, 6202 AZ Maastricht, The Netherlands
| | - Sabine van Rijt
- MERLN
Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
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6-Gingerol exerts a protective effect against hypoxic injury through the p38/Nrf2/HO-1 and p38/NF-κB pathway in H9c2 cells. J Nutr Biochem 2022; 104:108975. [PMID: 35245652 DOI: 10.1016/j.jnutbio.2022.108975] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 10/02/2021] [Accepted: 02/09/2022] [Indexed: 12/18/2022]
Abstract
Ginger, one of the most widely consumed condiment for various foods and beverages, has many pharmacological effects. 6-gingerol, a naturally occurring phenol, is one of the major pungent constituents of ginger. The purpose of this study was to characterize the effect of 6-gingerol on the p38/Nrf2/HO-1 and p38/NF-κB signaling pathway, as a possible means of combating hypoxia-related oxidative stress. H9c2 cells were chemically induced with CoCl2 to mimic hypoxia-associated cellular damage. Cardiomyocyte injury was assessed by lactate dehydrogenase and creatine kinase. Reactive oxygen species production was assessed by 2',7'-dichlorodihydrofluorescein diacetate. The antioxidative property of 6-gingerol was measured by estimating the activities of superoxide dismutase, catalase, glutathione and glutathione disulfide. Apoptosis was detected by flow cytometry after Annexin V-FITC-propidium iodide double staining. Western blotting was used to evaluate levels of p-p38, p38, cytoplasm p65, nuclear p65, total p65, nuclear Nrf2, total Nrf2, Keap1, HIF-1α, and HO-1. 6-gingerol was able to counter hypoxia-induced cardiomyocyte injury as evidenced by inhibiting the levels of oxidative stress indexes and increasing the percentage of apoptosis. Furthermore, 6-gingerol was able to down-regulate p-p38/p38, nuclear p65, total p65 and Keap1 expression induced by CoCl2 stimulation and increased cytoplasm p65, nuclear Nrf2, total Nrf2, HO-1, and HIF-1α expression. However, treatment with specific Nrf2 inhibitor blunted the activation of Nrf2 signaling and removed the protective effects of 6-gingerol. These experiments provide evidence that 6-gingerol exerts cytoprotective effects, which may be associated with the regulation of oxidative stress and apoptosis, potentially through activating the Nrf2 pathway and inhibiting the p38/NF-κB pathways.
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28
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Ji R, Wu D, Liu Q. Icariin inhibits RANKL-induced osteoclastogenesis in RAW264.7 cells via inhibition of reactive oxygen species production by reducing the expression of NOX1 and NOX4. Biochem Biophys Res Commun 2022; 600:6-13. [PMID: 35182975 DOI: 10.1016/j.bbrc.2022.02.023] [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: 12/21/2021] [Accepted: 02/08/2022] [Indexed: 11/16/2022]
Abstract
Icariin (ICA), isolated from Herba Epimedii, is a natural flavonoid glycoside that possesses antioxidant properties and inhibits osteoclastogenesis. However, the mechanism underlying osteoclastogenesis inhibition by ICA remains unclear. Here, we investigated the effects of ICA on receptor activator of nuclear factor kappa-Β ligand (RANKL)-induced osteoclastogenesis in RAW264.7 cells. ICA inhibited the expression of osteoclastogenesis-related genes in RAW264.7 cells induced by RANKL. ICA could inhibit osteoclastogenesis without inhibiting the viability of RAW264.7 cells. In addition, ICA inhibited reactive oxygen species production in RANKL-induced RAW264.7 cells. ICA reduced the expression of nuclear factor in activated T cells, cytoplasmic 1, and tartrate-resistant acid phosphatase, which are osteoclast-related molecules. Moreover, ICA decreased the expression of nicotinamide adenine dinucleotide phosphate oxidase (NOX), specifically NOX1 and NOX4, in RANKL-induced RAW264.7 cells. Our findings suggest that ICA can be used as a potential therapeutic agent for osteolytic diseases such as osteoporosis.
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Affiliation(s)
- Ruifeng Ji
- Department of Orthopedics, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Dou Wu
- Department of Orthopedics, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Qiang Liu
- Department of Orthopedics, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences Tongji Shanxi Hospital, Taiyuan, 030032, China.
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29
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Genome-Wide Characterization of PX Domain-Containing Proteins Involved in Membrane Trafficking-Dependent Growth and Pathogenicity of Fusarium graminearum. mBio 2021; 12:e0232421. [PMID: 34933449 PMCID: PMC8689521 DOI: 10.1128/mbio.02324-21] [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] [Indexed: 11/29/2022] Open
Abstract
The Phox homology (PX) domain is a membrane recruitment module that binds to phosphoinositides (PI) mediating the selective sorting and transport of transmembrane proteins, lipids, and other critical cargo molecules via membrane trafficking processes. However, the mechanism of vesicular trafficking mediated by PX domain-containing proteins in phytopathogenic fungi and how this relates to the fungal development and pathogenicity remain unclear. Here, we systematically identified and characterized the functions of PX domain-containing proteins in the plant fungal pathogen Fusarium graminearum. Our data identified 14 PX domain-containing proteins in F. graminearum, all of which were required for plant infection and deoxynivalenol (DON) production, with the exception of FgMvp1 and FgYkr078. Furthermore, all the PX domain-containing proteins showed distinct localization patterns that were limited to the endosomes, vacuolar membrane, endoplasmic reticulum, cytoplasm, and hyphal septa/tips. Remarkably, among these proteins, FgBem1 targeted to surface crescent and septal pores and was retained at the septum pores even after actin constriction during septum development. Further analyses demonstrated that the surface crescent targeting of FgBem1 solely depended on its SH3 domains, while its septum and apex anchoring localization relied on its PX domain, which was also indispensable for reactive oxygen species (ROS) production, sexual development, and pathogenicity in F. graminearum. In summary, our study is the first detailed and comprehensive functional analysis of PX domain-containing proteins in filamentous fungi, and it provides new insight into the mechanism of FgBem1 involved in septum and apex anchorage mediated by its PX domain, which is necessary for sexual development and pathogenicity of F. graminearum.
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30
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Redox Homeostasis and Regulation in Pluripotent Stem Cells: Uniqueness or Versatility? Int J Mol Sci 2021; 22:ijms222010946. [PMID: 34681606 PMCID: PMC8535588 DOI: 10.3390/ijms222010946] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 09/29/2021] [Accepted: 10/04/2021] [Indexed: 12/16/2022] Open
Abstract
Pluripotent stem cells (PSCs) hold great potential both in studies on developmental biology and clinical practice. Mitochondrial metabolism that encompasses pathways that generate ATP and produce ROS significantly differs between PSCs and somatic cells. Correspondingly, for quite a long time it was believed that the redox homeostasis in PSCs is also highly specific due to the hypoxic niche of their origin-within the pre-implantation blastocyst. However, recent research showed that redox parameters of cultivated PSCs have much in common with that of their differentiated progeny cells. Moreover, it has been proven that, similar to somatic cells, maintaining the physiological ROS level is critical for the regulation of PSC identity, proliferation, differentiation, and de-differentiation. In this review, we aimed to summarize the studies of redox metabolism and signaling in PSCs to compare the redox profiles of pluripotent and differentiated somatic cells. We collected evidence that PSCs possess metabolic plasticity and are able to adapt to both hypoxia and normoxia, that pluripotency is not strictly associated with anaerobic conditions, and that cellular redox homeostasis is similar in PSCs and many other somatic cells under in vitro conditions that may be explained by the high conservatism of the redox regulation system.
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31
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Ramos R, Zimbron JM, Thorimbert S, Chamoreau LM, Munier A, Botuha C, Karaiskou A, Salmain M, Sobczak-Thépot J. Insights into the antiproliferative mechanism of (C^N)-chelated half-sandwich iridium complexes. Dalton Trans 2021; 49:17635-17641. [PMID: 33226042 DOI: 10.1039/d0dt03414b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Transition metal-based anticancer compounds, as an alternative to platinum derivatives, are raising scientific interest as they may present distinct although poorly understood mechanisms of action. We used a structure-activity relationship-based methodology to investigate the chemical and biological features of a series of ten (C^N)-chelated half-sandwich iridiumIII complexes of the general formula [IrCp*(phox)Cl], where (phox) is a 2-phenyloxazoline ligand forming a 5-membered metallacycle. This series of compounds undergoes a fast exchange of their chlorido ligand once solubilised in DMSO. They were cytotoxic to HeLa cells with IC50 values in the micromolar range and induced a rapid activation of caspase-3, an apoptosis marker. In vitro, the oxidative power of all the complexes towards NADH was highlighted but only the complexes bearing substituents on the oxazoline ring were able to produce H2O2 at the micromolar range. However, we demonstrated using a powerful HyPer protein redox sensor-based flow cytometry assay that most complexes rapidly raised intracellular levels of H2O2. Hence, this study shows that oxidative stress can partly explain the cytotoxicity of these complexes on the HeLa cell line and gives a first entry to their mechanism of action.
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Affiliation(s)
- Robin Ramos
- Institut Parisien de Chimie Moléculaire (IPCM), Sorbonne Université, CNRS, 4 place Jussieu, F-75005 Paris, France.
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32
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Ivanova JS, Pugovkina NA, Neganova IE, Kozhukharova IV, Nikolsky NN, Lyublinskaya OG. Cell cycle-coupled changes in the level of reactive oxygen species support the proliferation of human pluripotent stem cells. Stem Cells 2021; 39:1671-1687. [PMID: 34460135 DOI: 10.1002/stem.3450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 08/10/2021] [Indexed: 12/12/2022]
Abstract
The study of proliferation regulation in human pluripotent stem cells is crucial to gain insights into understanding the physiology of these cells. However, redox regulation of the pluripotent cell cycle remains largely unexplored. Here, using human embryonic stem cells (hESCs) as well as human induced pluripotent stem cells (hiPSCs), we demonstrate that the level of reactive oxygen species (ROS) in pluripotent cells oscillates in accordance with the cell cycle progression with the peak occurring at transition from S to G2 /M phase of the cycle. A decrease of this level by antioxidants leads to hindered S-phase initiation and progression but does not affect the early-G1 -phase or mitosis. Cells exposed to antioxidants in the early-G1 -phase accumulate the phosphorylated retinoblastoma protein and overcome the restriction point but are unable to accumulate the main regulators of the S phase-CYCLIN A and GEMININ. Based on the previous findings that CYCLIN A stability is affected by redox homeostasis disturbances in somatic cells, we compared the responses to antioxidant treatments in hESCs and in their differentiated fibroblast-like progeny cells (difESCs). In difESCs, similar to hESCs, a decrease in ROS level results in the disruption of S-phase initiation accompanied by a deficiency of the CYCLIN A level. Moreover, in antioxidant-treated cells, we revealed the accumulation of DNA breaks, which was accompanied by activation of the apoptosis program in pluripotent cells. Thus, we conclude that maintaining the physiological ROS level is essential for promotion of proliferation and accurate DNA synthesis in pluripotent cells and their differentiated descendants.
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Affiliation(s)
- Julia S Ivanova
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Natalia A Pugovkina
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Irina E Neganova
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Irina V Kozhukharova
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Nikolay N Nikolsky
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Olga G Lyublinskaya
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia
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33
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Sinenko SA, Starkova TY, Kuzmin AA, Tomilin AN. Physiological Signaling Functions of Reactive Oxygen Species in Stem Cells: From Flies to Man. Front Cell Dev Biol 2021; 9:714370. [PMID: 34422833 PMCID: PMC8377544 DOI: 10.3389/fcell.2021.714370] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/01/2021] [Indexed: 12/14/2022] Open
Abstract
Reactive oxygen species (ROS), superoxide anion and hydrogen peroxide, are generated as byproducts of oxidative phosphorylation in the mitochondria or via cell signaling-induced NADPH oxidases in the cytosol. In the recent two decades, a plethora of studies established that elevated ROS levels generated by oxidative eustress are crucial physiological mediators of many cellular and developmental processes. In this review, we discuss the mechanisms of ROS generation and regulation, current understanding of ROS functions in the maintenance of adult and embryonic stem cells, as well as in the process of cell reprogramming to a pluripotent state. Recently discovered cell-non-autonomous ROS functions mediated by growth factors are crucial for controlling cell differentiation and cellular immune response in Drosophila. Importantly, many physiological functions of ROS discovered in Drosophila may allow for deciphering and understanding analogous processes in human, which could potentially lead to the development of novel therapeutic approaches in ROS-associated diseases treatment.
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Affiliation(s)
- Sergey A Sinenko
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | | | - Andrey A Kuzmin
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Alexey N Tomilin
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
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34
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Zhang X, Zhang M, Yan Y, Wang M, Li J, Yu Y, Xiao Y, Luo X, Qian X, Yang Y. Dihydro-Si-rhodamine for live-cell localization microscopy. Chem Commun (Camb) 2021; 57:7553-7556. [PMID: 34240730 DOI: 10.1039/d1cc02596a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorophores with photo-modulatory fluorescence properties are valuable for cutting-edge localization microscopy. The existing probes are either photo-activatable, or photo-switchable, but not both. We report a probe (DH-SiR), a leuco-dye obtained by reduction of Si-rhodamine, with both photo-activatable and photo-switchable fluorescence. The potential for super-resolution microscopy was showcased.
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Affiliation(s)
- Xiaodong Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Mengmeng Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yu Yan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Mingkang Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Jin Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yang Yu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yi Xiao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Xiao Luo
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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35
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Ou W, Liang Y, Qin Y, Wu W, Xie M, Zhang Y, Zhang Y, Ji L, Yu H, Li T. Hypoxic acclimation improves cardiac redox homeostasis and protects heart against ischemia-reperfusion injury through upregulation of O-GlcNAcylation. Redox Biol 2021; 43:101994. [PMID: 33964586 PMCID: PMC8121980 DOI: 10.1016/j.redox.2021.101994] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/11/2021] [Accepted: 04/22/2021] [Indexed: 02/05/2023] Open
Abstract
Ischemia-reperfusion (I/R) injury is detrimental to cardiovascular system. Alteration in glucose metabolism has been recognized as an important adaptive response under hypoxic conditions. However, the biological benefits underlying this metabolic phenotype remain to be elucidated. This study was designed to investigate the impact of hypoxic acclimation (HA) on cardiac I/R injury and the antioxidative mechanism(s). Male adult mice were acclimated in a hypoxic chamber (10% oxygen [O2]) for 8 h/day for 14 days, and then subjected to cardiac I/R injury by ligation of left anterior descending coronary artery for 30 min and reperfusion for 24 h or 7 days. Our results showed that HA attenuated oxidative stress and reduced infarct size in the I/R hearts. This cardioprotective effect is coupled with an elevation of protein O-linked N-acetylglucosamine (O-GlcNAc) modification partially due to inflammatory stimulation. Hyperglycosylation activated glucose-6-phosphate dehydrogenase (G6PDH), the rate-limiting enzyme in the pentose phosphate pathway, resulting in an upregulation of NADPH/NADP+ and GSH/GSSG couples and enhancement of redox homeostasis in the heart. Pharmacological suppression of O-GlcNAcylation totally abolished the influence of HA on the G6PDH activity, redox balance and post-I/R damage in the hearts and cultured cardiomyocytes, whereby augmentation of O-GlcNAcylation further enhanced the benefits, suggesting a central role of O-GlcNAcylation in HA-initiated antioxidative and cardioprotective effects. These findings, therefore, identified HA as a promising anti-I/R strategy for the heart and proposed O-GlcNAc modification of G6PDH as a therapeutic target in ischemic heart disease.
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Affiliation(s)
- Wei Ou
- Laboratory of Mitochondria and Metabolism, Department of Anesthesiology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Anesthesia and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China; Department of Anesthesiology, Nanchong Central Hospital, Nanchong, 637000, China
| | - Yu Liang
- Laboratory of Mitochondria and Metabolism, Department of Anesthesiology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Anesthesia and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Yu Qin
- Department of Anesthesiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Wei Wu
- Department of Anesthesiology, The General Hospital of Western Theater Command, Chengdu, 610083, China
| | - Maodi Xie
- Laboratory of Mitochondria and Metabolism, Department of Anesthesiology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Anesthesia and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Yabing Zhang
- Laboratory of Mitochondria and Metabolism, Department of Anesthesiology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Anesthesia and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Yarong Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Liwei Ji
- Laboratory of Mitochondria and Metabolism, Department of Anesthesiology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Anesthesia and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Haiyang Yu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Tao Li
- Laboratory of Mitochondria and Metabolism, Department of Anesthesiology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Anesthesia and Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China.
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36
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Brusatol Inhibits Tumor Growth and Increases the Efficacy of Cabergoline against Pituitary Adenomas. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6696015. [PMID: 34221237 PMCID: PMC8221873 DOI: 10.1155/2021/6696015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 05/15/2021] [Indexed: 12/03/2022]
Abstract
Cabergoline (CAB) is the first choice for treatment of prolactinoma and the most common subtype of pituitary adenoma. However, drug resistance and lack of effectiveness in other pituitary tumor types remain clinical challenges to this treatment. Brusatol (BT) is known to inhibit cell growth and promote apoptosis in a variety of cancer cells. In our present studies, we investigate the effects of BT on pituitary tumor cell proliferation in vitro and in vivo. BT treatment resulted in an increase in Annexin V-expressing cells and promoted the expression of apoptosis-related proteins in rat and human pituitary tumor cells. Investigation of the mechanism underlying this effect revealed that BT increased the production of reactive oxygen species (ROS) and inhibited the phosphorylation of 4EBP1 and S6K1. Furthermore, treatment with a combination of BT and CAB resulted in greater antitumor effects than either treatment alone in nude mice and pituitary tumor cells. Collectively, our results suggest that the BT-induced ROS accumulation and inhibition of mTORC1 signaling pathway leads to inhibition of tumor growth. Combined use of CAB and BT may increase the clinical effectiveness of treatment for human pituitary adenomas.
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Park J, Lee S, Choi J, Choi I. Extra- and Intracellular Monitoring of TGF-β Using Single Immunoplasmonic Nanoprobes. ACS Sens 2021; 6:1823-1830. [PMID: 33755418 DOI: 10.1021/acssensors.0c02723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Transforming growth factor-β (TGF-β) is a well-known disease-related biomarker associated with fibrotic diseases, and initiation and progression of cancer in many organs. Therefore, quantitative and sensitive detection of TGF-β and similar biomarkers is crucial for patient treatment in the early stages of diagnosis. In many studies, the detection of TGF-β, an important profibrotic and cancer promoting cytokine, has been generally conducted by fluorescence or absorbance-based immunoassays. However, conventional methods for detecting TGF-β have problems including use of time-consuming sample pretreatment steps and multiple reagents for signal amplification and difficulty in real-time detection from living cells. Herein, we present a plasmon-based immunoassay for TGF-β using antibody-conjugated single gold nanoparticles that act as optically excellent intracellular and extracellular detection probes that do not require additional signal amplification. To detect TGF-β sensitively and selectively, we exploited the localized surface plasmon resonance (LSPR) property of antibody-conjugated plasmonic gold nanoparticles at a single particle level. By measuring the LSPR spectral shifts of the single plasmonic nanoprobes, TGF-β can be detected down to the picomolar level, which is comparable with the conventional methods but without significant interference from other proteins. The optimized plasmonic nanoprobes were applied to quantify and monitor the extracellular TGF-β level secreted from the cells under stress conditions, such as cancer, and exposure to toxic environments. Owing to the ease of cellular internalization of the nanoprobes, we directly image and detect increases in intracellular TGF-β levels in living cells under the given stress conditions without cell lysis. We envision that this strategy of using individual nanoparticles as sensors to monitor protein biomarkers in living cells could be applied for various biological assays and diagnosis.
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Affiliation(s)
- Junhee Park
- Department of Life Science, University of Seoul, Seoul 02054, South Korea
| | - Seungki Lee
- Department of Life Science, University of Seoul, Seoul 02054, South Korea
| | - Jinhee Choi
- School of Environmental Engineering, University of Seoul, Seoul 02054, South Korea
| | - Inhee Choi
- Department of Life Science, University of Seoul, Seoul 02054, South Korea
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Zhou L, Lu R, Huang C, Lin D. Taurine Protects C2C12 Myoblasts From Impaired Cell Proliferation and Myotube Differentiation Under Cisplatin-Induced ROS Exposure. Front Mol Biosci 2021; 8:685362. [PMID: 34124164 PMCID: PMC8189557 DOI: 10.3389/fmolb.2021.685362] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 04/29/2021] [Indexed: 12/21/2022] Open
Abstract
In cancer patients, chemotherapeutic medication induces aberrant ROS (reactive oxygen species) accumulation in skeletal muscles, resulting in myofiber degradation, muscle weakness, and even cachexia, which further leads to poor therapeutic outcomes. Acting as an antioxidant, taurine is extensively used to accelerate postexercise muscle recovery in athletes. The antioxidant effects of taurine have been shown in mature myotubes and myofibers but not yet in myoblasts, the myotube precursor. The proliferation and differentiation ability of myoblasts play a very important role in myofiber repair and regeneration, which is usually impaired during chemotherapeutics in cancer patients as well. Here, we explored the effects of taurine supplementation on C2C12 myoblasts exposed to cisplatin-induced ROS. We found that cisplatin treatment led to dramatically decreased cell viability; accumulated ROS level; down-regulated expressions of MyoD1 (myoblast determination protein 1), myogenin, and MHC (myosin heavy chain); and impaired myotube differentiation in myoblasts. Significantly, taurine supplementation protected myoblasts against cisplatin-induced cell viability decrease, promoted cellular ROS clearance, and, most importantly, preserved the expressions of MyoD1, myogenin, and MHC as well as myotube differentiation ability. We further conducted NMR-based metabolomic analysis to clarify the underlying molecular mechanisms. We identified 14 characteristic metabolites primarily responsible for the discrimination of metabolic profiles between cisplatin-treated cells and normal counterparts, including increased levels of BCAAs (branched-chain amino acids: leucine and isoleucine), alanine, glycine, threonine, glucose, ADP (adenosine diphosphate), phenylalanine, and PC (O-phosphocholine), and decreased levels of lysine, β-alanine, choline, GPC (sn-glycero-3-phosphocholine), and myo-inositol. Evidently, taurine supplementation partially reversed the changing trends of several metabolites (isoleucine, threonine, glycine, PC, β-alanine, lysine, and myo-inositol). Furthermore, taurine supplementation promoted the proliferation and myotube differentiation of myoblasts by alleviating cellular catabolism, facilitating GSH (reduced glutathione) biosynthesis, improving glucose utilization and TCA (tricarboxylic acid) cycle anaplerosis, and stabilizing cellular membranes. Our results demonstrated the protective effects of taurine on cisplatin-impaired myoblasts and elucidated the mechanistic rationale for the use of taurine to ameliorate muscle toxicity in clinical chemotherapy cancer patients.
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Affiliation(s)
- Lin Zhou
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Ruohan Lu
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Caihua Huang
- Research and Communication Center of Exercise and Health, Xiamen University of Technology, Xiamen, China
| | - Donghai Lin
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
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Li X, Lü Z, Wang C, Li K, Xu F, Xu P, Niu Y. Induction of Apoptosis in Cancer Cells by Glutathione Transferase Inhibitor Mediated Hydrophobic Tagging Molecules. ACS Med Chem Lett 2021; 12:720-725. [PMID: 34055217 DOI: 10.1021/acsmedchemlett.0c00627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 04/29/2021] [Indexed: 11/30/2022] Open
Abstract
The abnormally high expression of glutathione transferases is closely associated with cancer incidence and drug resistance. By introducing a hydrophobic moiety to the inhibitor structure, we organized a series of degraders of glutathione transferases and demonstrated them potently inducing apoptosis in cancer cells, presenting their pharmacological potential in cancer therapy.
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Affiliation(s)
- Xiaona Li
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Zirui Lü
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Cong Wang
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Kebin Li
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Fengrong Xu
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Ping Xu
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Yan Niu
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, P.R. China
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Liu K, Yang W, Hu M, Xie W, Huang J, Cui M, He X, Nie X. Exosomal miR-27 negatively regulates ROS production and promotes granulosa cells apoptosis by targeting SPRY2 in OHSS. J Cell Mol Med 2021; 25:3976-3990. [PMID: 33638619 PMCID: PMC8051746 DOI: 10.1111/jcmm.16355] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 01/06/2021] [Accepted: 01/30/2021] [Indexed: 01/02/2023] Open
Abstract
Ovarian hyperstimulation syndrome (OHSS) is one of the most dangerous iatrogenic complications in controlled ovarian hyperstimulation (COH). The exact molecular mechanism that induces OHSS remains unclear. In recent years, accumulating evidence found that exosomal miRNAs participate in many diseases of reproductive system. However, the specific role of miRNAs, particularly the follicular fluid-derived exosomal miRNAs in OHSS remains controversial. To identify differentially expressed follicular fluid exosomal miRNAs from OHSS and non-OHSS patients, the analysis based on miRNA-sequence was conducted. The levels of 291 miRNAs were significantly differed in exosomes from OHSS patients compared with normal control, and exosomal miR-27 was one of the most significantly down-regulated miRNAs in the OHSS group. By using MiR-27 mimic, we found it could increase ROS stress and apoptosis by down-regulating the expression of p-ERK/Nrf2 pathway by negatively regulating SPRY2. These data demonstrate that exosomal miRNAs are differentially expressed in follicular fluid between patients with and without OHSS, and follicular fluid exosomal miR-27 may involve in the pathological process of OHSS development.
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Affiliation(s)
- Kailu Liu
- Department of Reproductive Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Weijie Yang
- Assisted Reproduction Unit, Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengting Hu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China.,State Key Laboratory of Reproductive Medicine, Clinical Center for Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - WenXiu Xie
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Jingyu Huang
- Department of Reproductive Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Meiting Cui
- Department of Reproductive Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Xi He
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaowei Nie
- Department of Reproductive Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
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Hosogi S, Marunaka Y, Ashihara E, Yamada T, Sumino A, Tanaka H, Puppulin L. Plasma membrane anchored nanosensor for quantifying endogenous production of H 2O 2 in living cells. Biosens Bioelectron 2021; 179:113077. [PMID: 33607416 DOI: 10.1016/j.bios.2021.113077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/12/2021] [Accepted: 02/04/2021] [Indexed: 12/31/2022]
Abstract
Hydrogen peroxide (H2O2) is one of the main second messengers involved in signaling pathways controlling cell metabolism. During tumorigenesis H2O2 is generated on the extracellular space by membrane-associated NADPH oxidases and superoxide dismutase to stimulate cell proliferation and preservation of the transformed state. Accordingly, a characteristic feature of malignant cells is overproduction of H2O2 in the extracellular milieu and the subsequent absorption in the cytosol. Since the most significant gradients of endogenous extracellular H2O2 can be observed only in a very shallow region of the fluid in contact with the plasma membrane, we show here the use of a newly designed nanosensor anchored to the outer cell surface and capable of quantifying H2O2 at nanometer distance from the membrane proteins responsible for its production. This biosensor is built upon gold nanoparticles functionalized with a H2O2-sensitive boronate compound that is probed using surface enhanced Raman spectroscopy (SERS). The highly localized information obtained on the cell surface by SERS analysis is combined with analytical methods of redox biology to estimate the associated levels of intracellular H2O2 responsible for cell signaling. The results obtained from A549 lung cancer cell line show localized spots on the cell surface at concentration up to 12 μM, associated to intracellular concentration up to 5.1 nM.
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Affiliation(s)
- Shigekuni Hosogi
- Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8414, Japan; Department of Molecular Cell Physiology, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kyoto, 602-8566, Japan
| | - Yoshinori Marunaka
- Department of Molecular Cell Physiology, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kyoto, 602-8566, Japan; Research Center for Drug Discovery and Pharmaceutical Development Science, Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, 525-8577, Japan; Research Institute for Clinical Physiology, Kyoto Industrial Health Association, 67 Kitatsuboi-cho, Nishino-kyo, Nakagyo-ku, Kyoto, 604-8472, Japan
| | - Eishi Ashihara
- Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8414, Japan
| | - Tadaaki Yamada
- Department of Pulmonary Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kyoto, 602-8566, Japan
| | - Ayumi Sumino
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakumamachi, Kanazawa, 920-1192, Japan; Institute for Frontier Science Initiative, Kanazawa University, Kakumamachi, Kanazawa, 920-1192, Japan
| | - Hideo Tanaka
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kyoto, 602-8566, Japan
| | - Leonardo Puppulin
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakumamachi, Kanazawa, 920-1192, Japan; Department of Pathology and Cell Regulation, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kyoto, 602-8566, Japan.
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Wu C, Guo WB, Liu YY, Yang L, Miao AJ. Perturbation of calcium homeostasis and multixenobiotic resistance by nanoplastics in the ciliate Tetrahymena thermophila. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123923. [PMID: 33264974 DOI: 10.1016/j.jhazmat.2020.123923] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/23/2020] [Accepted: 09/07/2020] [Indexed: 06/12/2023]
Abstract
Microplastics (MPs) are an environmental hazard of growing concern, including their potential toxic effects on the biota of different trophic levels. Nevertheless, the molecular mechanisms underlying MP-induced toxicity remain largely unknown. In the present study, Tetrahymena thermophila was exposed to polystyrene nanoplastics (PS-NPs) and the responses of this relatively sensitive ciliate were then followed using transcriptome analysis together with several other verification methods. The results showed that PS-NPs perturbed calcium (Ca) homeostasis, by inducing the inositol-1,4,5-trisphosphate-dependent liberation of Ca from the endoplasmic reticulum into the cytosol. The high cytosolic concentration of Ca induced Ca accumulation in mitochondria, which increased mitochondrial permeability and the generation of reactive oxygen species, finally leading to growth inhibition. Such toxicity is the so-called direct effects of PS-NPs. By contrast, PS-NPs also inhibited the activity of multixenobiotic resistance transporter, by down-regulating the ATP-binding cassette transporter genes Abcb15 and Abcc52. This additional effect may alter cellular responses to other pollutants and implicates PS-NPs in the risks to the organism posed by subsequent toxic exposures, which was named as the indirect effects of PS-NPs. Our study highlights the importance of considering both direct and indirect biological effects of MPs in evaluations of their environmental and health risks.
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Affiliation(s)
- Chao Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210046, PR China
| | - Wen-Bo Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210046, PR China
| | - Yue-Yue Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210046, PR China
| | - Liuyan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210046, PR China
| | - Ai-Jun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province, 210046, PR China.
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Lehman BJ, Lopez-Diaz FJ, Santisakultarm TP, Fang L, Shokhirev MN, Diffenderfer KE, Manor U, Emerson BM. Dynamic regulation of CTCF stability and sub-nuclear localization in response to stress. PLoS Genet 2021; 17:e1009277. [PMID: 33411704 PMCID: PMC7790283 DOI: 10.1371/journal.pgen.1009277] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 11/13/2020] [Indexed: 02/06/2023] Open
Abstract
The nuclear protein CCCTC-binding factor (CTCF) has diverse roles in chromatin architecture and gene regulation. Functionally, CTCF associates with thousands of genomic sites and interacts with proteins, such as cohesin, or non-coding RNAs to facilitate specific transcriptional programming. In this study, we examined CTCF during the cellular stress response in human primary cells using immune-blotting, quantitative real time-PCR, chromatin immunoprecipitation-sequence (ChIP-seq) analysis, mass spectrometry, RNA immunoprecipitation-sequence analysis (RIP-seq), and Airyscan confocal microscopy. Unexpectedly, we found that CTCF is exquisitely sensitive to diverse forms of stress in normal patient-derived human mammary epithelial cells (HMECs). In HMECs, a subset of CTCF protein forms complexes that localize to Serine/arginine-rich splicing factor (SC-35)-containing nuclear speckles. Upon stress, this species of CTCF protein is rapidly downregulated by changes in protein stability, resulting in loss of CTCF from SC-35 nuclear speckles and changes in CTCF-RNA interactions. Our ChIP-seq analysis indicated that CTCF binding to genomic DNA is largely unchanged. Restoration of the stress-sensitive pool of CTCF protein abundance and re-localization to nuclear speckles can be achieved by inhibition of proteasome-mediated degradation. Surprisingly, we observed the same characteristics of the stress response during neuronal differentiation of human pluripotent stem cells (hPSCs). CTCF forms stress-sensitive complexes that localize to SC-35 nuclear speckles during a specific stage of neuronal commitment/development but not in differentiated neurons. We speculate that these particular CTCF complexes serve a role in RNA processing that may be intimately linked with specific genes in the vicinity of nuclear speckles, potentially to maintain cells in a certain differentiation state, that is dynamically regulated by environmental signals. The stress-regulated activity of CTCF is uncoupled in persistently stressed, epigenetically re-programmed "variant" HMECs and certain cancer cell lines. These results reveal new insights into CTCF function in cell differentiation and the stress-response with implications for oxidative damage-induced cancer initiation and neuro-degenerative diseases.
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Affiliation(s)
- Bettina J. Lehman
- Regulatory Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Fernando J. Lopez-Diaz
- Regulatory Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Thom P. Santisakultarm
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Linjing Fang
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Maxim N. Shokhirev
- Razavi Newman Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Kenneth E. Diffenderfer
- Stem Cell Core, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Uri Manor
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, La Jolla, California, United States of America
| | - Beverly M. Emerson
- Regulatory Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America
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Pak VV, Ezeriņa D, Lyublinskaya OG, Pedre B, Tyurin-Kuzmin PA, Mishina NM, Thauvin M, Young D, Wahni K, Martínez Gache SA, Demidovich AD, Ermakova YG, Maslova YD, Shokhina AG, Eroglu E, Bilan DS, Bogeski I, Michel T, Vriz S, Messens J, Belousov VV. Ultrasensitive Genetically Encoded Indicator for Hydrogen Peroxide Identifies Roles for the Oxidant in Cell Migration and Mitochondrial Function. Cell Metab 2020; 31:642-653.e6. [PMID: 32130885 PMCID: PMC7088435 DOI: 10.1016/j.cmet.2020.02.003] [Citation(s) in RCA: 183] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/18/2019] [Accepted: 02/07/2020] [Indexed: 11/19/2022]
Abstract
Hydrogen peroxide (H2O2) is a key redox intermediate generated within cells. Existing probes for H2O2 have not solved the problem of detection of the ultra-low concentrations of the oxidant: these reporters are not sensitive enough, or pH-dependent, or insufficiently bright, or not functional in mammalian cells, or have poor dynamic range. Here we present HyPer7, the first bright, pH-stable, ultrafast, and ultrasensitive ratiometric H2O2 probe. HyPer7 is fully functional in mammalian cells and in other higher eukaryotes. The probe consists of a circularly permuted GFP integrated into the ultrasensitive OxyR domain from Neisseria meningitidis. Using HyPer7, we were able to uncover the details of H2O2 diffusion from the mitochondrial matrix, to find a functional output of H2O2 gradients in polarized cells, and to prove the existence of H2O2 gradients in wounded tissue in vivo. Overall, HyPer7 is a probe of choice for real-time H2O2 imaging in various biological contexts.
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Affiliation(s)
- Valeriy V Pak
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; Institute for Cardiovascular Physiology, Georg August University Göttingen, Göttingen 37073, Germany
| | - Daria Ezeriņa
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie - Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Olga G Lyublinskaya
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Brandán Pedre
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie - Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | | | - Natalie M Mishina
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Marion Thauvin
- Center for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS, INSERM, PSL Research University, Paris 75231, France; Sorbonne Université, Collège Doctoral, Paris 75005, France
| | - David Young
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie - Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Khadija Wahni
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie - Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Santiago Agustín Martínez Gache
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie - Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Alexandra D Demidovich
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Yulia G Ermakova
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; European Molecular Biology Laboratory, Heidelberg 69117, Germany
| | - Yulia D Maslova
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Arina G Shokhina
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia
| | - Emrah Eroglu
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Dmitry S Bilan
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Ivan Bogeski
- Institute for Cardiovascular Physiology, Georg August University Göttingen, Göttingen 37073, Germany
| | - Thomas Michel
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sophie Vriz
- Center for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS, INSERM, PSL Research University, Paris 75231, France; University Paris-Diderot, Paris 75006, France
| | - Joris Messens
- VIB-VUB Center for Structural Biology, Vlaams Instituut voor Biotechnologie - Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Brussels Center for Redox Biology, Vrije Universiteit Brussel, B-1050 Brussels, Belgium; Structural Biology Brussels, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
| | - Vsevolod V Belousov
- Department of Metabolism and Redox Biology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow 117997, Russia; Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow 117997, Russia; Institute for Cardiovascular Physiology, Georg August University Göttingen, Göttingen 37073, Germany; Federal Center for Cerebrovascular Pathology and Stroke, Moscow 117997, Russia.
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He X, Xu C, Xiong W, Qian Y, Fan J, Ding F, Deng H, Chen H, Shen J. The ICT-based fluorescence and colorimetric dual sensing of endogenous hypochlorite in living cells, bacteria, and zebrafish. Analyst 2020; 145:29-33. [DOI: 10.1039/c9an02226k] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This work demonstrates a novel chemosensor, SPTPA, that exhibits fluorescence and colorimetric dual sensing of hypochlorite with an ICT ON strategy.
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Affiliation(s)
- Xiaojun He
- School of Ophthalmology & Optometry
- School of Biomedical Engineering
- Wenzhou Medical University
- Wenzhou
- China
| | - Chuchu Xu
- School of Stomatology
- Wenzhou Medical University
- Wenzhou
- China
| | - Wei Xiong
- School of Ophthalmology & Optometry
- School of Biomedical Engineering
- Wenzhou Medical University
- Wenzhou
- China
| | - Yuna Qian
- Wenzhou Institute
- University of Chinese Academy of Sciences
- Wenzhou
- China
| | - Jinyi Fan
- School of Stomatology
- Wenzhou Medical University
- Wenzhou
- China
| | - Feng Ding
- Department of Microbiology & Immunology
- School of Basic Medical Sciences
- Wenzhou Medical University
- Wenzhou 325035
- China
| | - Hui Deng
- School of Stomatology
- Wenzhou Medical University
- Wenzhou
- China
| | - Hong Chen
- Luoyang Key Laboratory of Organic Functional Molecules
- College of Food and Drug
- Luoyang Normal University
- Luoyang
- China
| | - Jianliang Shen
- School of Ophthalmology & Optometry
- School of Biomedical Engineering
- Wenzhou Medical University
- Wenzhou
- China
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Souza C, Mônico DA, Tedesco AC. Implications of dichlorofluorescein photoinstability for detection of UVA-induced oxidative stress in fibroblasts and keratinocyte cells. Photochem Photobiol Sci 2020; 19:40-48. [DOI: 10.1039/c9pp00415g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Pre-incubation with 10 μM DCFDA for 30 min in PBS was sufficient to generate a sensitive and reproducible standard curve for detection of UVA-induced ROS in HaCaT and HPF cells, with no effects on cell viability or morphology.
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Affiliation(s)
- Carla Souza
- University of São Paulo; School of Philosophy
- Sciences
- and Literature of Ribeirão Preto
- Chemistry Department
- Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group
| | - Danielli Azevedo Mônico
- University of São Paulo; School of Philosophy
- Sciences
- and Literature of Ribeirão Preto
- Chemistry Department
- Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group
| | - Antonio Claudio Tedesco
- University of São Paulo; School of Philosophy
- Sciences
- and Literature of Ribeirão Preto
- Chemistry Department
- Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group
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47
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Lyublinskaya O, Antunes F. Measuring intracellular concentration of hydrogen peroxide with the use of genetically encoded H 2O 2 biosensor HyPer. Redox Biol 2019; 24:101200. [PMID: 31030065 PMCID: PMC6482347 DOI: 10.1016/j.redox.2019.101200] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 12/18/2022] Open
Abstract
In this study, we propose a method for quantification of average hydrogen peroxide concentration within a living cell that is based on the use of genetically encoded H2O2 biosensor HyPer. The method utilizes flow cytometric measurements of HyPer fluorescence in H2O2-exposed cells to analyze the biosensor oxidation kinetics. Fitting the experimental curves with kinetic equations allows determining the rate constants of HyPer oxidation/reduction which are used further for the calculation of peroxide concentrations in the cells of interest both in the presence and absence of external H2O2. Applying this method to K562 cells, we have estimated the gradient as about 390-fold between the extracellular and intracellular level of exogenous H2O2 in cells exposed to the micromole doses of peroxide, as well as the average basal level of H2O2 in the cytosol of undisturbed cells ([H2O2]basal=2.2±0.4nM). The method can be extended to other H2O2-sensitive redox probes or to procedures in which, rather than adding external peroxide, intracellular production of peroxide is triggered, providing a tool to quantitate not only basal average H2O2 concentrations but also the concentration of peroxide build up in the vicinity of redox probes.
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Affiliation(s)
- Olga Lyublinskaya
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, St.Petersburg, Russia.
| | - Fernando Antunes
- Departamento de Química e Bioquímica, Centro de Química e Bioquímica, Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, P-1749-016 Lisbon, Portugal.
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Protective Effect of Glutathione against Oxidative Stress-induced Cytotoxicity in RAW 264.7 Macrophages through Activating the Nuclear Factor Erythroid 2-Related Factor-2/Heme Oxygenase-1 Pathway. Antioxidants (Basel) 2019; 8:antiox8040082. [PMID: 30939721 PMCID: PMC6523540 DOI: 10.3390/antiox8040082] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 01/23/2023] Open
Abstract
Reactive oxygen species (ROS), products of oxidative stress, contribute to the initiation and progression of the pathogenesis of various diseases. Glutathione is a major antioxidant that can help prevent the process through the removal of ROS. The aim of this study was to evaluate the protective effect of glutathione on ROS-mediated DNA damage and apoptosis caused by hydrogen peroxide, H2O2, in RAW 264.7 macrophages and to investigate the role of the nuclear factor erythroid 2-related factor-2 (Nrf2)/heme oxygenase-1 (HO-1) signaling pathway. The results showed that the decrease in the survival rate of RAW 264.7 cells treated with H2O2 was due to the induction of DNA damage and apoptosis accompanied by the increased production of ROS. However, H2O2-induced cytotoxicity and ROS generation were significantly reversed by glutathione. In addition, the H2O2-induced loss of mitochondrial membrane potential was related to a decrease in adenosine triphosphate (ATP) levels, and these changes were also significantly attenuated in the presence of glutathione. These protective actions were accompanied by a increase in the expression rate of B-cell lymphoma-2 (Bcl-2)/Bcl-2-associated X protein (Bax) and poly(ADP-ribose) polymerase cleavage by the inactivation of caspase-3. Moreover, glutathione-mediated cytoprotective properties were associated with an increased activation of Nrf2 and expression of HO-1; however, the inhibition of the HO-1 function using an HO-1 specific inhibitor, zinc protoporphyrin IX, significantly weakened the cytoprotective effects of glutathione. Collectively, the results demonstrate that the exogenous administration of glutathione is able to protect RAW 264.7 cells against oxidative stress-induced mitochondria-mediated apoptosis along with the activity of the Nrf2/HO-1 signaling pathway.
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Regulation of Redox Homeostasis by Nonthermal Biocompatible Plasma Discharge in Stem Cell Differentiation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2318680. [PMID: 31049127 PMCID: PMC6462321 DOI: 10.1155/2019/2318680] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/24/2019] [Indexed: 12/19/2022]
Abstract
Recently, a growing body of evidence has shown the role of reactive species as secondary messengers in cell proliferation and differentiation, as opposed to the harmful metabolism byproducts that they were previously solely recognized as. Thus, the balance of intracellular reduction-oxidation (redox) homeostasis plays a vital role in the regulation of stem cell self-renewal and differentiation. Nonthermal biocompatible plasma (NBP) has emerged as a novel tool in biomedical applications. Recently, NBP has also emerged as a powerful tool in the tissue engineering field for the surface modification of biomaterial and the promotion of stem cell differentiation by the regulation of intracellular redox biology. NBP can generate various kinds of reactive oxygen species (ROS) and reactive nitrogen species (RNS), which may play the role of the second passenger in the cell signaling network and active antioxidant system in cells. Herein, we review the current knowledge on mechanisms by which NBP regulates cell proliferation and differentiation through redox modification. Considering the importance of redox homeostasis in the regulation of stem cell differentiation, understanding the underlying molecular mechanisms involved will provide important new insights into NBP-induced stem cell differentiation for tissue engineering.
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50
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Kornienko JS, Smirnova IS, Pugovkina NA, Ivanova JS, Shilina MA, Grinchuk TM, Shatrova AN, Aksenov ND, Zenin VV, Nikolsky NN, Lyublinskaya OG. High doses of synthetic antioxidants induce premature senescence in cultivated mesenchymal stem cells. Sci Rep 2019; 9:1296. [PMID: 30718685 PMCID: PMC6361906 DOI: 10.1038/s41598-018-37972-y] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 12/13/2018] [Indexed: 12/19/2022] Open
Abstract
Stress-induced premature senescence program is known to be activated in cells by various genotoxic stressors, and oxidative stress is considered to be the main of those. To this end, many studies discover antioxidants as protective anti-aging agents. In the current study, we examined the effects of different antioxidants (Tempol, resveratrol, NAC, DPI) on the mesenchymal stem cells maintained in normal physiological conditions. We used high, but non-cytotoxic antioxidant doses which are widely used in laboratory practice to protect cells from oxidative damage. We show that these substances induce reversible block of cell proliferation and do not cause any genotoxic effects when applied to the quiescent cells. However, the same doses of the same substances, when applied to the proliferating cells, can induce irreversible cell cycle arrest, DNA strand breaks accumulation and DNA damage response activation. As a consequence, antioxidant-induced DNA damage results in the stress-induced premature senescence program activation. We conclude that high doses of antioxidants, when applied to the proliferating cells that maintain physiological levels of reactive oxygen species, can cause DNA damage and induce premature senescence which suggests to re-estimate believed unconditional anti-aging antioxidant properties.
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Affiliation(s)
- Ju S Kornienko
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - I S Smirnova
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - N A Pugovkina
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - Ju S Ivanova
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - M A Shilina
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - T M Grinchuk
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - A N Shatrova
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - N D Aksenov
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - V V Zenin
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - N N Nikolsky
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia
| | - O G Lyublinskaya
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St.Petersburg, 194064, Russia.
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