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Wang J, Zhe Y, Zhao Z, Zhang S, Wu W, Mao J, Lin Y. Stretchable Oxygen-Tolerant Sensor Based on a Single-Atom Fe-N 4 Electrocatalyst for Observing the Role of Oxidative Stress in Hypertension. Anal Chem 2023; 95:5159-5167. [PMID: 36896726 DOI: 10.1021/acs.analchem.3c00331] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Oxidative stress and related oxidative damage have a causal relation with the pathogenesis of hypertension. Therefore, it is crucial to determine the mechanism of oxidative stress in hypertension by applying mechanical forces on cells to simulate hypertension while monitoring the release of reactive oxygen species (ROS) from cells under an oxidative stress environment. However, cellular level research has rarely been explored because monitoring the ROS released by cells is still challenging owing to the interference of O2. In this study, an Fe single-atom-site catalyst anchored on N-doped carbon-based materials (Fe SASC/N-C) was synthesized, which exhibits excellent electrocatalytic activity for the reduction of hydrogen peroxide (H2O2) at a peak potential of +0.1 V and can effectively avoid the interference of O2. Furthermore, we constructed a flexible and stretchable electrochemical sensor based on the Fe SASC/N-C catalyst to study the release of cellular H2O2 under simulated hypoxic and hypertension conditions. Density functional theory calculations show that the highest transition state energy barrier from the oxygen reduction reaction (ORR), i.e., O2 to H2O, is 0.38 eV. In comparison, the H2O2 reduction reaction (HPRR) can be completed only by overcoming a lower energy barrier of 0.24 eV, endowing the HPRR to be more favorable on Fe SASC/N-C compared with the ORR. This study provided a reliable electrochemical platform for real-time investigation of H2O2-related underlying mechanisms of the hypertension process.
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Affiliation(s)
- Jialu Wang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Yadong Zhe
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhiqiang Zhao
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Sichen Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Wenjie Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | - Junjie Mao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | - Yuqing Lin
- Department of Chemistry, Capital Normal University, Beijing 100048, China
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Katahira Y, Murakami F, Inoue S, Miyakawa S, Sakamoto E, Furusaka Y, Watanabe A, Sekine A, Kuroda M, Hasegawa H, Mizoguchi I, Yoshimoto T. Protective effects of conditioned media of immortalized stem cells from human exfoliated deciduous teeth on pressure ulcer formation. Front Immunol 2023; 13:1010700. [PMID: 36713359 PMCID: PMC9881429 DOI: 10.3389/fimmu.2022.1010700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 12/23/2022] [Indexed: 01/14/2023] Open
Abstract
Pressure ulcers (PUs) are increasing with aging worldwide, but there is no effective causal therapy. Although mesenchymal stem cells (MSCs) promote cutaneous wound healing, the effects of the conditioned medium (CM) of MSCs on cutaneous PU formation induced by ischemia-reperfusion injury have been poorly investigated. To address this issue, herein, we first established an immortalized stem cell line from human exfoliated deciduous teeth (SHED). This cell line was revealed to have superior characteristics in that it grows infinitely and vigorously, and stably and consistently secretes a variety of cytokines. Using the CM obtained from the immortalized SHED cell line, we investigated the therapeutic potential on a cutaneous ischemia-reperfusion mouse model for PU formation using two magnetic plates. This is the first study to show that CM from immortalized SHEDs exerts therapeutic effects on PU formation by promoting angiogenesis and oxidative stress resistance through vascular endothelial growth factor and hepatocyte growth factor. Thus, the CM of MSCs has potent therapeutic effects, whereas these therapies have not been implemented in human medicine. To try to meet the regulatory requirements for manufacturing and quality control as much as possible, it is necessary to produce CM that is consistently safe and effective. The immortalization of stem cells could be one of the breakthroughs to meet the regulatory requirements and consequently open up a novel avenue to create a novel type of cell-free regenerative medicine, although further investigation into the quality control is warranted.
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Affiliation(s)
- Yasuhiro Katahira
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Fumihiro Murakami
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Shinya Inoue
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Satomi Miyakawa
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Eri Sakamoto
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Yuma Furusaka
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Aruma Watanabe
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Ami Sekine
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Masahiko Kuroda
- Department of Molecular Pathology, Tokyo Medical University, Tokyo, Japan
| | - Hideaki Hasegawa
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Izuru Mizoguchi
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Takayuki Yoshimoto
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan,*Correspondence: Takayuki Yoshimoto,
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Tavassoly I, Hu Y, Zhao S, Mariottini C, Boran A, Chen Y, Li L, Tolentino RE, Jayaraman G, Goldfarb J, Gallo J, Iyengar R. Genomic signatures defining responsiveness to allopurinol and combination therapy for lung cancer identified by systems therapeutics analyses. Mol Oncol 2019; 13:1725-1743. [PMID: 31116490 PMCID: PMC6670022 DOI: 10.1002/1878-0261.12521] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The ability to predict responsiveness to drugs in individual patients is limited. We hypothesized that integrating molecular information from databases would yield predictions that could be experimentally tested to develop transcriptomic signatures for specific drugs. We analyzed lung adenocarcinoma patient data from The Cancer Genome Atlas and identified a subset of patients in which xanthine dehydrogenase (XDH) expression correlated with decreased survival. We tested allopurinol, an FDA‐approved drug that inhibits XDH, on human non‐small‐cell lung cancer (NSCLC) cell lines obtained from the Broad Institute Cancer Cell Line Encyclopedia and identified sensitive and resistant cell lines. We utilized the transcriptomic profiles of these cell lines to identify six‐gene signatures for allopurinol‐sensitive and allopurinol‐resistant cell lines. Transcriptomic networks identified JAK2 as an additional target in allopurinol‐resistant lines. Treatment of resistant cell lines with allopurinol and CEP‐33779 (a JAK2 inhibitor) resulted in cell death. The effectiveness of allopurinol alone or allopurinol and CEP‐33779 was verified in vivo using tumor formation in NCR‐nude mice. We utilized the six‐gene signatures to predict five additional allopurinol‐sensitive NSCLC cell lines and four allopurinol‐resistant cell lines susceptible to combination therapy. We searched the transcriptomic data from a library of patient‐derived NSCLC tumors from the Jackson Laboratory to identify tumors that would be predicted to be sensitive to allopurinol or allopurinol + CEP‐33779 treatment. Patient‐derived tumors showed the predicted drug sensitivity in vivo. These data indicate that we can use integrated molecular information from cancer databases to predict drug responsiveness in individual patients and thus enable precision medicine.
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Affiliation(s)
- Iman Tavassoly
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yuan Hu
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Clinical Pharmacology and Pharmacy, Chinese PLA General Hospital, Beijing, China
| | - Shan Zhao
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Chiara Mariottini
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Aislyn Boran
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yibang Chen
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Lisa Li
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rosa E Tolentino
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Gomathi Jayaraman
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Joseph Goldfarb
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - James Gallo
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ravi Iyengar
- Department of Pharmacological Sciences, Systems Biology Center New York, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Fan L, Zhou W, Zhang L, Jiang D, Zhao Q, Liu L. Sitagliptin protects against hypoxia/reoxygenation (H/R)-induced cardiac microvascular endothelial cell injury. Am J Transl Res 2019; 11:2099-2107. [PMID: 31105821 PMCID: PMC6511792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
Inhibition of hypoxia/reoxygenation (H/R)-induced insult in cardiac microvascular endothelial cells (CMECs) has been considered as a promising therapeutic strategy for the treatment of ischemic cardiovascular disease. In the present study, we found that H/R significantly increased the expression of dipeptidyl peptidase (DPP)-4 in CMECs. Treatment with the DPP-4 inhibitor sitagliptin, a licensed drug used for the treatment of type 2 diabetes mellitus (T2DM), ameliorated H/R-induced oxidative stress by decreasing the expression of NOX-4 and restoring the intracellular level of GSH in CMECs. Sitagliptin could also improve H/R-induced mitochondrial dysfunction by increasing intracellular MMP and ATP. Additionally, we found that the presence of sitagliptin prevented H/R-induced reduced cell viability and LDH release. Notably, our findings indicate that sitagliptin possesses an anti-inflammatory effect against H/R-induced expression of IL-6, IL-8, and TNF-α as well as secretion of HMGB1. Mechanistically, we found that sitagliptin suppresses activation of p38/NF-κB signaling. These findings suggest that sitagliptin may have potential as a therapeutic agent for the treatment of cardiovascular diseases.
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Affiliation(s)
- Lianlian Fan
- Department of Pharmacy, China-Japan Union Hospital of Jilin UniversityChangchun 130033, China
| | - Wei Zhou
- Department of Pharmacy, The First Hospital of Jilin UniversityChangchun 130031, China
| | - Lirong Zhang
- Department of Pathology, China-Japan Union Hospital of Jilin UniversityChangchun 130033, China
| | - Dongli Jiang
- Department of Pharmacy, China-Japan Union Hospital of Jilin UniversityChangchun 130033, China
| | - Qini Zhao
- Department of Cardiovascular Medicine, China-Japan Union Hospital of Jilin UniversityChangchun 130033, China
- Jilin Provincial Precision Medicine Key Laboratory for Cardiovascular Genetic DiagnosisChangchun 130033, China
| | - Long Liu
- Department of Cardiovascular Medicine, China-Japan Union Hospital of Jilin UniversityChangchun 130033, China
- Jilin Provincial Precision Medicine Key Laboratory for Cardiovascular Genetic DiagnosisChangchun 130033, China
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Zhao S, Wang Y, Zhang X, Zheng L, Zhu B, Yao S, Yang L, Du J. Melatonin Protects Against Hypoxia/Reoxygenation-Induced Dysfunction of Human Umbilical Vein Endothelial Cells Through Inhibiting Reactive Oxygen Species Generation. ACTA CARDIOLOGICA SINICA 2018; 34:424-431. [PMID: 30271093 PMCID: PMC6160513 DOI: 10.6515/acs.201809_34(5).20180708a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 07/08/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Hypoxia/reoxygenation (H/R) in human umbilical vein endothelial cells (HUVECs) induces oxidative stress and eventually leads to vascular injury. OBJECTIVE The aim of this study was to examine the effect of melatonin on HUVECs injured by H/R and explore the underlying mechanisms. MATERIALS AND METHODS A model of HUVECs under hypoxia/reoxygenation was established. Cell migration and adhesive ability was measured by wound healing and adhesion assays. Cell proliferation was measured by EdU assay. Production of reactive oxygen species (ROS) was evaluated by CM-H2DCFDA staining. Actin cytoskeleton rearrangement was examined by immunofluorescence. Western blotting analysis were used to analyze P38 and HSP27 phosphorylation levels. RESULTS H/R inhibited HUVEC proliferation, cell migratory and adhesive capacities, whereas melatonin (1~100 μM) inhibited these effects in a dose-dependent manner. Melatonin alone did not affect HUVEC viability, however, it inhibited the increase in ROS production and cytoskeleton disruption elicited by H/R, and it dose-dependently prevented H/R-induced upregulation of P38 and HSP27 phosphorylation. In addition, the ROS scavenger N-acetyl-L-cysteine markedly inhibited increased phosphorylation levels of P38 and HSP27 under H/R. CONCLUSIONS Melatonin may have a potential clinical effect in trials of H/R-induced vascular injury through its antioxidant property.
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Affiliation(s)
- Shuo Zhao
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, 211166
| | - Yueyuan Wang
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, 211166
| | | | | | | | | | - Ling Yang
- Department of Cardiology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, 213003, China
| | - Jun Du
- Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, 211166
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Brucella Melitensis 16M Regulates the Effect of AIR Domain on Inflammatory Factors, Autophagy, and Apoptosis in Mouse Macrophage through the ROS Signaling Pathway. PLoS One 2016; 11:e0167486. [PMID: 27907115 PMCID: PMC5132199 DOI: 10.1371/journal.pone.0167486] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 11/15/2016] [Indexed: 01/18/2023] Open
Abstract
Brucellosis is a highly contagious zoonosis caused by Brucella. Brucella can invade and persist inside host cells, which results in chronic infection. We constructed AIR interference and overexpression lentiviruses to acquire AIR interference, overexpression, and rescue stable expression cell lines. We also established a Brucella melitensis 16M-infected macrophage model, which was treated with either the vehicle control or NAC (ROS scavenger N-acetylcysteine (NAC) for 0, 3, 6, 12, and 24 h. Confocal laser microscopy, transmission electron microscopy, fluorescence quantitative PCR, flow cytometry, ELISA, and Western blot were used to detect inflammation, cell autophagy and apoptosis-related protein expression levels, ROS levels, and the distribution of mitochondria. It was found that after interference and overexpression of AIR, ROS release was significantly changed, and mitochondria became abnormally aggregated. B. melitensis 16M activated the NLRP3/AIM2 inflammatory complex, and induced RAW264.7 cells to secrete IL-1β and IL-18 through the ROS pathway. B. melitensis 16M also altered autophagy-related gene expression, increased autophagy activity, and induced cell apoptosis through the ROS pathway. The results showed that after B. melitensis 16M infection, ROS induced apoptosis, inflammation, and autophagy while AIR inhibited autophagosome maturation and autophagy initiation. Autophagy negatively regulated the activation of inflammasomes and prevented inflammation from occurring. In addition, mitophagy could promote cell apoptosis.
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