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Zhu L, Bai M, Xiao S, Liu Y, Zhu Q, Wang Z, Zhao J, Zhang W, Chen D. In-situ monitoring of cellular H 2O 2 within 3D cell clusters using conductive scaffolds. Talanta 2024; 279:126559. [PMID: 39018950 DOI: 10.1016/j.talanta.2024.126559] [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: 02/14/2024] [Revised: 06/23/2024] [Accepted: 07/11/2024] [Indexed: 07/19/2024]
Abstract
Accurately monitoring H2O2 concentrations in 3D cell clusters is challenging due to limited diffusion and rapid degradation of H2O2 in the culture medium. Despite the incorporation of three-dimensional cell culture approaches, the detection technology has largely remained as a 2D planar system. In this study, we present a versatile approach of 3D electrochemical sensing utilizing carbon nanotubes as conductive scaffolds for in-situ monitoring of H2O2 in cell clusters. These scaffolds enabled direct contact between H2O2 released from cells and the electrodes, thereby improving sensitivity and ensuring biocompatibility for cell aggregates. The scaffolds exhibited electrocatalytic behavior with a limit of detection of 6.7 nM H2O2. Additionally, the electrochemical responses of cell clusters with the scaffolds exhibited significantly higher current compared to clusters without scaffolds when stimulated with model drugs. This study underscores the potential of conductive scaffolds for real-time monitoring of H2O2 released from cell clusters in 3D microenvironments.
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Affiliation(s)
- Ling Zhu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Mingxia Bai
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Shenghao Xiao
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Yanhui Liu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Qin Zhu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Zixuan Wang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China
| | - Jiaqian Zhao
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China; Key Laboratory of Elemene Class Anti-Cancer Medicines, Hangzhou Normal University, China
| | - Wei Zhang
- Medtronic Technology Center, Shanghai, China.
| | - Dajing Chen
- School of Pharmacy, Hangzhou Normal University, Hangzhou, China; Key Laboratory of Elemene Class Anti-Cancer Medicines, Hangzhou Normal University, China.
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2
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Silva SLR, Dias IRSB, Rodrigues ACBDC, Costa RGA, Oliveira MDS, Barbosa GADC, Soares MBP, Dias RB, Valverde LF, Rocha CAG, Roy N, Park CY, Bezerra DP. Emetine induces oxidative stress, cell differentiation and NF-κB inhibition, suppressing AML stem/progenitor cells. Cell Death Discov 2024; 10:201. [PMID: 38684672 PMCID: PMC11059384 DOI: 10.1038/s41420-024-01967-8] [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: 02/21/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 05/02/2024] Open
Abstract
Acute myeloid leukemia (AML) is a fatal malignancy of the blood and bone marrow. Leukemic stem cells (LSCs) are a rare subset of leukemic cells that promote the development and progression of AML, and eradication of LSCs is critical for effective control of this disease. Emetine is an FDA-approved antiparasitic drug with antitumor properties; however, little is known about its potential against LSCs. Herein, we explored the antileukemic potential of emetine, focusing on its effects on AML stem/progenitor cells. Emetine exhibited potent cytotoxic activity both in hematologic and solid cancer cells and induced AML cell differentiation. Emetine also inhibited AML stem/progenitor cells, as evidenced by decreased expression of CD34, CD97, CD99, and CD123 in KG-1a cells, indicating anti-AML stem/progenitor cell activities. The administration of emetine at a dosage of 10 mg/kg for two weeks showed no significant toxicity and significantly reduced xenograft leukemic growth in vivo. NF-κB activation was reduced in emetine-treated KG-1a cells, as shown by reduced phospho-NF-κB p65 (S529) and nuclear NF-κB p65. DNA fragmentation, YO-PRO-1 staining, mitochondrial depolarization and increased levels of active caspase-3 and cleaved PARP (Asp214) were detected in emetine-treated KG-1a cells. Moreover, treatment with the pancaspase inhibitor Z-VAD(OMe)-FMK partially prevented the apoptotic cell death induced by emetine. Emetine treatment also increased cellular and mitochondrial reactive oxygen species, and emetine-induced apoptosis in KG-1a cells was partially prevented by the antioxidant N-acetylcysteine, indicating that emetine induces apoptosis, at least in part, by inducing oxidative stress. Overall, these studies indicate that emetine is a novel potential anti-AML agent with promising activity against stem/progenitor cells, encouraging the development of further studies aimed at its clinical application.
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Affiliation(s)
- Suellen L R Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
| | - Ingrid R S B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
| | | | - Rafaela G A Costa
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
| | - Maiara de S Oliveira
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
| | - Gabriela A da C Barbosa
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
| | - Milena B P Soares
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
- SENAI Institute for Innovation in Advanced Health Systems, SENAI CIMATEC, Salvador, BA, 41650-010, Brazil
| | - Rosane B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
- Department of Propaedeutics, Federal University of Bahia (UFBA), Salvador, BA, 40301-155, Brazil
| | - Ludmila F Valverde
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
| | - Clarissa A G Rocha
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil
- Department of Propaedeutics, Federal University of Bahia (UFBA), Salvador, BA, 40301-155, Brazil
- Center for Biotechnology and Cell Therapy, D'Or Institute for Research and Education (IDOR), Salvador, BA, 41253-190, Brazil
| | - Nainita Roy
- Department of Pathology, School of Medicine, New York University, New York, NY, 10016, United States of America
| | - Christopher Y Park
- Department of Pathology, School of Medicine, New York University, New York, NY, 10016, United States of America
| | - Daniel P Bezerra
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, BA, 40296-710, Brazil.
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3
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Shao N, Ren C, Hu T, Wang D, Zhu X, Li M, Cheng T, Zhang Y, Zhang XE. Detection of continuous hierarchical heterogeneity by single-cell surface antigen analysis in the prognosis evaluation of acute myeloid leukaemia. BMC Bioinformatics 2023; 24:450. [PMID: 38017410 PMCID: PMC10683216 DOI: 10.1186/s12859-023-05561-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 11/06/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Acute myeloid leukaemia (AML) is characterised by the malignant accumulation of myeloid progenitors with a high recurrence rate after chemotherapy. Blasts (leukaemia cells) exhibit a complete myeloid differentiation hierarchy hiding a wide range of temporal information from initial to mature clones, including genesis, phenotypic transformation, and cell fate decisions, which might contribute to relapse in AML patients. METHODS Based on the landscape of AML surface antigens generated by mass cytometry (CyTOF), we combined manifold analysis and principal curve-based trajectory inference algorithm to align myelocytes on a single-linear evolution axis by considering their phenotype continuum that correlated with differentiation order. Backtracking the trajectory from mature clusters located automatically at the terminal, we recurred the molecular dynamics during AML progression and confirmed the evolution stage of single cells. We also designed a 'dispersive antigens in neighbouring clusters exhibition (DANCE)' feature selection method to simplify and unify trajectories, which enabled the exploration and comparison of relapse-related traits among 43 paediatric AML bone marrow specimens. RESULTS The feasibility of the proposed trajectory analysis method was verified with public datasets. After aligning single cells on the pseudotime axis, primitive clones were recognized precisely from AML blasts, and the expression of the inner molecules before and after drug stimulation was accurately plotted on the trajectory. Applying DANCE to 43 clinical samples with different responses for chemotherapy, we selected 12 antigens as a general panel for myeloblast differentiation performance, and obtain trajectories to those patients. For the trajectories with unified molecular dynamics, CD11c overexpression in the primitive stage indicated a good chemotherapy outcome. Moreover, a later initial peak of stemness heterogeneity tended to be associated with a higher risk of relapse compared with complete remission. CONCLUSIONS In this study, pseudotime was generated as a new single-cell feature. Minute differences in temporal traits among samples could be exhibited on a trajectory, thus providing a new strategy for predicting AML relapse and monitoring drug responses over time scale.
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Affiliation(s)
- Nan Shao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chenshuo Ren
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tianyuan Hu
- State Key Laboratory of Experimental Haematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Haematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300020, China
| | - Dianbing Wang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiaofan Zhu
- State Key Laboratory of Experimental Haematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Haematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300020, China
| | - Min Li
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Tao Cheng
- State Key Laboratory of Experimental Haematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Haematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300020, China
| | - Yingchi Zhang
- State Key Laboratory of Experimental Haematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Haematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300020, China.
| | - Xian-En Zhang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- Faculty of Synthetic Biology, University of Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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4
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Luanpitpong S, Rodboon N, Samart P, Janan M, Klaihmon P, Lorthongpanich C, U-Pratya Y, Issaragrisil S. Inhibition of O-GlcNAcase Inhibits Hematopoietic and Leukemic Stem Cell Self-Renewal and Drives Dendritic Cell Differentiation via STAT3/5 Signaling. Stem Cells 2022; 40:1078-1093. [PMID: 36124999 DOI: 10.1093/stmcls/sxac068] [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: 05/17/2022] [Accepted: 09/06/2022] [Indexed: 01/12/2023]
Abstract
Myeloid differentiation blockage at immature and self-renewing stages is a common hallmark across all subtypes of acute myeloid leukemia (AML), despite their genetic heterogeneity. Metabolic state is an important regulator of hematopoietic stem cell (HSC) self-renewal and lineage-specific differentiation as well as several aggressive cancers. However, how O-GlcNAcylation, a nutrient-sensitive posttranslational modification of proteins, contributes to both normal myelopoiesis and AML pathogenesis remains largely unknown. Using small molecule inhibitors and the CRISPR/Cas9 system, we reveal for the first time that inhibition of either OGA or OGT, which subsequently caused an increase or decrease in cellular O-GlcNAcylation, inhibits the self-renewal and maintenance of CD34+ hematopoietic stem/progenitor cells (HSPCs) and leukemic stem/progenitor cells and drives normal and malignant myeloid differentiation. We further unveiled the distinct roles of OGA and OGT inhibition in lineage-specific differentiation. While OGT inhibition induces macrophage differentiation, OGA inhibition promotes the differentiation of both CD34+ HSPCs and AML cells into dendritic cells (DCs), in agreement with an upregulation of a multitude of genes involved in DC development and function and their ability to induce T-cell proliferation, via STAT3/5 signaling. Our novel findings provide significant basic knowledge that could be important in understanding AML pathogenesis and overcoming differentiation blockage-agnostic to the genetic background of AML. Additionally, the parallel findings in normal HSPCs may lay the groundwork for future cellular therapy as a means to improve the ex vivo differentiation of normal DCs and macrophages.
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Affiliation(s)
- Sudjit Luanpitpong
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Napachai Rodboon
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Parinya Samart
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Montira Janan
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Phatchanat Klaihmon
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chanchao Lorthongpanich
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Yaowalak U-Pratya
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Surapol Issaragrisil
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.,Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.,Bangkok Hematology Center, Wattanosoth Hospital, BDMS Center of Excellence for Cancer, Bangkok, Thailand
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Zhao J, Hai S, Chen J, Ma L, Rahman SU, Zhao C, Feng S, Li Y, Wu J, Wang X. Zearalenone Induces Apoptosis in Porcine Endometrial Stromal Cells through JNK Signaling Pathway Based on Endoplasmic Reticulum Stress. Toxins (Basel) 2022; 14:toxins14110758. [PMID: 36356008 PMCID: PMC9694026 DOI: 10.3390/toxins14110758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
Zearalenone (ZEA) is an estrogen-like mycotoxin characterized mainly by reproductive toxicity, to which pigs are particularly sensitive. The aim of this study was to investigate the molecular mechanism of ZEA-induced apoptosis in porcine endometrial stromal cells (ESCs) by activating the JNK signaling pathway through endoplasmic reticulum stress (ERS). In this study, ESCs were exposed to ZEA, with the ERS inhibitor sodium 4-Phenylbutyrate (4-PBA) as a reference. The results showed that ZEA could damage cell structures, induce endoplasmic reticulum swelling and fragmentation, and decreased the ratio of live cells to dead cells significantly. In addition, ZEA could increase reactive oxygen species and Ca2+ levels; upregulate the expression of GRP78, CHOP, PERK, ASK1 and JNK; activate JNK phosphorylation and its high expression in the nucleus; upregulate the expression Caspase 3 and Caspase 9; and increase the Bax/Bcl-2 ratio, resulting in increased apoptosis. After 3 h of 4-PBA-pretreatment, ZEA was added for mixed culture, which showed that the inhibition of ERS could reduce the cytotoxicity of ZEA toward ESCs. Compared with the ZEA group, ERS inhibition increased cell viability; downregulated the expression of GRP78, CHOP, PERK, ASK1 and JNK; and decreased the nuclear level of p-JNK. The Bax/Bcl-2 ratio and the expression of Caspase 3 and Caspase 9 were downregulated, significantly alleviating apoptosis. These results demonstrate that ZEA can alter the morphology of ESCs, destroy their ultrastructure, and activate the JNK signaling via the ERS pathway, leading to apoptosis.
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Affiliation(s)
- Jie Zhao
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Sirao Hai
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Jiawen Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Li Ma
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Sajid Ur Rahman
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chang Zhao
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Shibin Feng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yu Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
- Anhui Province Engineering Laboratory for Animal Food Quality and Bio-Safety, Hefei 230036, China
| | - Jinjie Wu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
- Anhui Province Engineering Laboratory for Animal Food Quality and Bio-Safety, Hefei 230036, China
| | - Xichun Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
- Anhui Province Engineering Laboratory for Animal Food Quality and Bio-Safety, Hefei 230036, China
- Correspondence:
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Perera MR, Sinclair JH. The Human Cytomegalovirus β2.7 Long Non-Coding RNA Prevents Induction of Reactive Oxygen Species to Maintain Viral Gene Silencing during Latency. Int J Mol Sci 2022; 23:ijms231911017. [PMID: 36232315 PMCID: PMC9569889 DOI: 10.3390/ijms231911017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/06/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
Human cytomegalovirus (HCMV) is a significant source of disease for the immunosuppressed and immunonaive. The treatment of HCMV is made more problematic by viral latency, a lifecycle stage in which the virus reduces its own gene expression and produces no infectious virus. The most highly expressed viral gene during HCMV latency is the viral β2.7 long non-coding RNA. Although we have recently shown that the β2.7 lncRNA lowers levels of reactive oxygen species (ROS) during infection in monocytes, how this impacts latency is unclear. We now show that β2.7 is important for establishing and maintaining HCMV latency by aiding the suppression of viral lytic gene expression and that this is directly related to its ability to quench reactive oxygen species (ROS). Consistent with this, we also find that exogenous inducers of ROS cause reactivation of latent HCMV. These effects can be compensated by treatment with an antioxidant to lower ROS levels. Finally, we show that ROS-mediated reactivation is independent of myeloid differentiation, but instead relies on NF-κB activation. Altogether, these results reveal a novel factor that is central to the complex process that underpins HCMV latency. These findings may be of particular relevance in the transplant setting, in which transplanted tissue/organs are subject to very high ROS levels, and HCMV reactivation poses a significant threat.
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The BCAT1 CXXC Motif Provides Protection against ROS in Acute Myeloid Leukaemia Cells. Antioxidants (Basel) 2022; 11:antiox11040683. [PMID: 35453368 PMCID: PMC9030579 DOI: 10.3390/antiox11040683] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/23/2022] [Accepted: 03/28/2022] [Indexed: 01/15/2023] Open
Abstract
The cytosolic branched-chain aminotransferase (BCAT1) has received attention for its role in myeloid leukaemia development, where studies indicate metabolic adaptations due to BCAT1 up-regulation. BCAT1, like the mitochondria isoform (BCAT2), shares a conserved CXXC motif ~10 Å from the active site. This CXXC motif has been shown to act as a ‘redox-switch’ in the enzymatic regulation of the BCAT proteins, however the response to reactive oxygen species (ROS) differs between BCAT isoforms. Studies indicate that the BCAT1 CXXC motif is several orders of magnitude less sensitive to the effects of ROS compared with BCAT2. Moreover, estimation of the reduction mid-point potential of BCAT1, indicates that BCAT1 is more reductive in nature and may possess antioxidant properties. Therefore, the aim of this study was to further characterise the BCAT1 CXXC motif and evaluate its role in acute myeloid leukaemia. Our biochemical analyses show that purified wild-type (WT) BCAT1 protein could metabolise H2O2 in vitro, whereas CXXC motif mutant or WT BCAT2 could not, demonstrating for the first time a novel antioxidant role for the BCAT1 CXXC motif. Transformed U937 AML cells over-expressing WT BCAT1, showed lower levels of intracellular ROS compared with cells over-expressing the CXXC motif mutant (CXXS) or Vector Controls, indicating that the BCAT1 CXXC motif may buffer intracellular ROS, impacting on cell proliferation. U937 AML cells over-expressing WT BCAT1 displayed less cellular differentiation, as observed by a reduction of the myeloid markers; CD11b, CD14, CD68, and CD36. This finding suggests a role for the BCAT1 CXXC motif in cell development, which is an important pathological feature of myeloid leukaemia, a disease characterised by a block in myeloid differentiation. Furthermore, WT BCAT1 cells were more resistant to apoptosis compared with CXXS BCAT1 cells, an important observation given the role of ROS in apoptotic signalling and myeloid leukaemia development. Since CD36 has been shown to be Nrf2 regulated, we investigated the expression of the Nrf2 regulated gene, TrxRD1. Our data show that the expression of TrxRD1 was downregulated in transformed U937 AML cells overexpressing WT BCAT1, which taken with the reduction in CD36 implicates less Nrf2 activation. Therefore, this finding may implicate the BCAT1 CXXC motif in wider cellular redox-mediated processes. Altogether, this study provides the first evidence to suggest that the BCAT1 CXXC motif may contribute to the buffering of ROS levels inside AML cells, which may impact ROS-mediated processes in the development of myeloid leukaemia.
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MAP kinase-dependent autophagy controls phorbol myristate acetate-induced macrophage differentiation of HL-60 leukemia cells. Life Sci 2022; 297:120481. [PMID: 35304128 DOI: 10.1016/j.lfs.2022.120481] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 11/22/2022]
Abstract
We investigated the mechanisms and the role of autophagy in the differentiation of HL-60 human acute myeloid leukemia cells induced by protein kinase C (PKC) activator phorbol myristate acetate (PMA). PMA-triggered differentiation of HL-60 cells into macrophage-like cells was confirmed by cell-cycle arrest accompanied by elevated expression of macrophage markers CD11b, CD13, CD14, CD45, EGR1, CSF1R, and IL-8. The induction of autophagy was demonstrated by the increase in intracellular acidification, accumulation/punctuation of autophagosome marker LC3-II, and the increase in autophagic flux. PMA also increased nuclear translocation of autophagy transcription factors TFEB, FOXO1, and FOXO3, as well as the expression of several autophagy-related (ATG) genes in HL-60 cells. PMA failed to activate autophagy inducer AMP-activated protein kinase (AMPK) and inhibit autophagy suppressor mechanistic target of rapamycin complex 1 (mTORC1). On the other hand, it readily stimulated the phosphorylation of mitogen-activated protein (MAP) kinases extracellular signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) via a protein kinase C-dependent mechanism. Pharmacological or genetic inhibition of ERK or JNK suppressed PMA-triggered nuclear translocation of TFEB and FOXO1/3, ATG expression, dissociation of pro-autophagic beclin-1 from its inhibitor BCL2, autophagy induction, and differentiation of HL-60 cells into macrophage-like cells. Pharmacological or genetic inhibition of autophagy also blocked PMA-induced macrophage differentiation of HL-60 cells. Therefore, MAP kinases ERK and JNK control PMA-induced macrophage differentiation of HL-60 leukemia cells through AMPK/mTORC1-independent, TFEB/FOXO-mediated transcriptional and beclin-1-dependent post-translational activation of autophagy.
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9
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Queiroz Junior NF, Steffani JA, Machado L, Longhi PJH, Montano MAE, Martins M, Machado SA, Machado AK, Cadoná FC. Antioxidant and cytoprotective effects of avocado oil and extract ( Persea americana Mill) against rotenone using monkey kidney epithelial cells (Vero). JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:875-890. [PMID: 34256683 DOI: 10.1080/15287394.2021.1945515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Oxidative stress is known to be involved in development of numerous diseases including cardiovascular, respiratory, renal, kidney and cancer. Thus, investigations that mimic oxidative stress in vitro may play an important role to find new strategies to control oxidative stress and subsequent consequences are important. Rotenone, widely used as a pesticide has been used as a model to simulate oxidative stress. However, this chemical was found to produce several diseases. Therefore, the aim of this study was to investigate the antioxidant and cytoprotective effect of avocado (Persea americana Mill) extract and oil in monkey kidney epithelial cells (VERO) exposed to rotenone. VERO cells were exposed to IC50 of rotenone in conjunction with different concentrations of avocado extract and oil (ranging from 1 to 1000 µg/ml), for 24 hr. Subsequently, cell viability and oxidative metabolism were assessed. Data demonstrated that avocado extract and oil in the presence of rotenone increased cellular viability at all tested concentrations compared to cells exposed only to rotenone. In addition, extract and avocado oil exhibited antioxidant action as evidenced by decreased levels of reactive oxygen species (ROS), superoxide ion, and lipid peroxidation, generated by rotenone. Further, avocado extract and oil appeared to be safe, since these compounds did not affect cell viability and or generate oxidative stress. Therefore, avocado appears to display a promising antioxidant potential by decreasing oxidative stress.
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Affiliation(s)
| | - Jovani Antônio Steffani
- Postgraduate Program of Biosciences and Health, West University of Santa Catarina, Joaçaba, SC, Brazil
| | - Larissa Machado
- Biological Sciences Course, West University of Santa Catarina, Joaçaba, SC, Brazil
| | | | | | - Mathias Martins
- Postgraduate Program in Health and Animal Production, West University of Santa Catarina, Joaçaba, SC, Brazil
| | - Sérgio Abreu Machado
- Postgraduate Program in Health and Animal Production, West University of Santa Catarina, Joaçaba, SC, Brazil
| | | | - Francine Carla Cadoná
- Postgraduate Program in Sciences of Health and Life, Franciscan University, Santa Maria, RS, Brazil
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10
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Oxidative Stress and ROS-Mediated Signaling in Leukemia: Novel Promising Perspectives to Eradicate Chemoresistant Cells in Myeloid Leukemia. Int J Mol Sci 2021; 22:ijms22052470. [PMID: 33671113 PMCID: PMC7957553 DOI: 10.3390/ijms22052470] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/04/2021] [Accepted: 02/25/2021] [Indexed: 12/11/2022] Open
Abstract
Myeloid leukemic cells are intrinsically under oxidative stress due to impaired reactive oxygen species (ROS) homeostasis, a common signature of several hematological malignancies. The present review focuses on the molecular mechanisms of aberrant ROS production in myeloid leukemia cells as well as on the redox-dependent signaling pathways involved in the leukemogenic process. Finally, the relevance of new chemotherapy options that specifically exert their pharmacological activity by altering the cellular redox imbalance will be discussed as an effective strategy to eradicate chemoresistant cells.
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11
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Liu Z, Ding Z, Chen K, Xu M, Yu T, Tong G, Zhang H, Li P. Balancing skeleton and functional groups in total syntheses of complex natural products: a case study of tigliane, daphnane and ingenane diterpenoids. Nat Prod Rep 2021; 38:1589-1617. [PMID: 33508045 DOI: 10.1039/d0np00086h] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Total synthesis of natural products has greatly contributed to natural product research, organic synthesis and drug discovery and development. However, in most cases, the efficiency of total synthesis is far from sufficient for direct practical industrial application. Thus, designing a concise and efficient synthetic route with balanced efforts between building the complex skeleton and introducing functional groups is highly desirable. In this critical review, we first present an introduction of this issue and a philosophical framework that cover possible synthetic approaches. Next, we have chosen the biogenetically closely related, biologically important and synthetically extremely challenging natural products, tiglianes, daphnanes and ingenanes as the particular case for the discussion, since in the past 40 years many synthetic approaches have been reported. The successes and pitfalls included therefore serve as the basis to draw some conclusions that may inspire future development in this area.
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Affiliation(s)
- Zhi Liu
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Zhengwei Ding
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, 710061, China.
| | - Kai Chen
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, 710061, China.
| | - Ming Xu
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Tao Yu
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
| | - Guanghu Tong
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, LaJolla, California 92037, USA
| | - Hailong Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Xi'an Jiaotong University, Xi'an, 710061, China.
| | - Pengfei Li
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China. and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
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12
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Brennan A, Leech JT, Kad NM, Mason JM. Selective antagonism of cJun for cancer therapy. J Exp Clin Cancer Res 2020; 39:184. [PMID: 32917236 PMCID: PMC7488417 DOI: 10.1186/s13046-020-01686-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/20/2020] [Indexed: 01/10/2023] Open
Abstract
The activator protein-1 (AP-1) family of transcription factors modulate a diverse range of cellular signalling pathways into outputs which can be oncogenic or anti-oncogenic. The transcription of relevant genes is controlled by the cellular context, and in particular by the dimeric composition of AP-1. Here, we describe the evidence linking cJun in particular to a range of cancers. This includes correlative studies of protein levels in patient tumour samples and mechanistic understanding of the role of cJun in cancer cell models. This develops an understanding of cJun as a focal point of cancer-altered signalling which has the potential for therapeutic antagonism. Significant work has produced a range of small molecules and peptides which have been summarised here and categorised according to the binding surface they target within the cJun-DNA complex. We highlight the importance of selectively targeting a single AP-1 family member to antagonise known oncogenic function and avoid antagonism of anti-oncogenic function.
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Affiliation(s)
- Andrew Brennan
- Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - James T Leech
- School of Biosciences, University of Kent, Canterbury, CT2 7NH, UK
| | - Neil M Kad
- School of Biosciences, University of Kent, Canterbury, CT2 7NH, UK
| | - Jody M Mason
- Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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13
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Zhang Y, Hu B, Wang M, Tong J, Pan J, Wang N, Gong P, Long M. Selenium Protects against Zearalenone-Induced Oxidative Stress and Apoptosis in the Mouse Kidney by Inhibiting Endoplasmic Reticulum Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6059058. [PMID: 32850001 PMCID: PMC7439790 DOI: 10.1155/2020/6059058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/21/2020] [Accepted: 06/26/2020] [Indexed: 12/12/2022]
Abstract
This study assessed the molecular mechanism of selenium (Se) protecting against kidney injury induced by zearalenone (ZEA) in mice. The experimental mice were divided into 4 groups including the control group, the Se group, the ZEA group, and the Se+ZEA group; ZEA and Se were administered orally for 28 days. The changes in renal biochemical index (BUN, UA, and CRE), biochemical change of kidney damage such as BUN, UA, and CRE, and oxidative damage such as MDA, T-SOD, and GSH-Px were investigated. Pathological sections and TUNEL staining were used to analyze renal pathological changes and cell apoptosis. qRT-PCR and Western blot were employed to detect the expression of genes and proteins which were related with endoplasmic reticulum stress. The results showed that ZEA increased the concentration of BUN, UA, and CRE and the content of MDA and decreased the activities of T-SOD and GSH-Px in the mouse kidneys. However, Se reversed above changes of the biochemical and antioxidant indexes of renal injury. Moreover, the results also showed that ZEA can increase the expression of Bax, caspase-12, caspase-3, Bip, CHOP, JNK protein, and mRNA and decrease the expression of Bcl-2 protein and mRNA. But Se reversed these proteins and genes related to endoplasmic reticulum stress and apoptosis. It can be concluded that Se protected against the kidney damage induced by ZEA. Se may protect the kidney from ZEA-induced apoptosis and oxidative stress by inhibiting ERS.
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Affiliation(s)
- Yi Zhang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Bo Hu
- Institute of Animal Husbandry Quality Standards, Xinjiang Academy of Animal Science, Urumqi 830000, China
| | - Mingyang Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Jingjing Tong
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Jianwen Pan
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Nan Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Ping Gong
- Institute of Animal Husbandry Quality Standards, Xinjiang Academy of Animal Science, Urumqi 830000, China
| | - Miao Long
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
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14
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Alhuthali HM, Bradshaw TD, Lim KH, Kam TS, Seedhouse CH. The natural alkaloid Jerantinine B has activity in acute myeloid leukemia cells through a mechanism involving c-Jun. BMC Cancer 2020; 20:629. [PMID: 32635894 PMCID: PMC7341637 DOI: 10.1186/s12885-020-07119-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/26/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML) is a heterogenous hematological malignancy with poor long-term survival. New drugs which improve the outcome of AML patients are urgently required. In this work, the activity and mechanism of action of the cytotoxic indole alkaloid Jerantinine B (JB), was examined in AML cells. METHODS We used a combination of proliferation and apoptosis assays to assess the effect of JB on AML cell lines and patient samples, with BH3 profiling being performed to identify early effects of the drug (4 h). Phosphokinase arrays were adopted to identify potential driver proteins in the cellular response to JB, the results of which were confirmed and extended using western blotting and inhibitor assays and measuring levels of reactive oxygen species. RESULTS AML cell growth was significantly impaired following JB exposure in a dose-dependent manner; potent colony inhibition of primary patient cells was also observed. An apoptotic mode of death was demonstrated using Annexin V and upregulation of apoptotic biomarkers (active caspase 3 and cleaved PARP). Using BH3 profiling, JB was shown to prime cells to apoptosis at an early time point (4 h) and phospho-kinase arrays demonstrated this to be associated with a strong upregulation and activation of both total and phosphorylated c-Jun (S63). The mechanism of c-Jun activation was probed and significant induction of reactive oxygen species (ROS) was demonstrated which resulted in an increase in the DNA damage response marker γH2AX. This was further verified by the loss of JB-induced C-Jun activation and maintenance of cell viability when using the ROS scavenger N-acetyl-L-cysteine (NAC). CONCLUSIONS This work provides the first evidence of cytotoxicity of JB against AML cells and identifies ROS-induced c-Jun activation as the major mechanism of action.
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Affiliation(s)
- Hayaa Moeed Alhuthali
- Blood Cancer and Stem Cells, Division of Cancer and Stem Cells, School of Medicine, Nottingham Biodiscovery Institute, University of Nottingham, Room B209, University Park, Nottingham, NG7 2RD, UK.,College of Applied Medical Science, Taif University, Ta'if, Saudi Arabia
| | | | - Kuan-Hon Lim
- School of Pharmacy, University of Nottingham, Semenyih, Malaysia
| | - Toh-Seok Kam
- Department of Chemistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Claire H Seedhouse
- Blood Cancer and Stem Cells, Division of Cancer and Stem Cells, School of Medicine, Nottingham Biodiscovery Institute, University of Nottingham, Room B209, University Park, Nottingham, NG7 2RD, UK.
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15
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Chen S, Yang S, Wang M, Chen J, Huang S, Wei Z, Cheng Z, Wang H, Long M, Li P. Curcumin inhibits zearalenone-induced apoptosis and oxidative stress in Leydig cells via modulation of the PTEN/Nrf2/Bip signaling pathway. Food Chem Toxicol 2020; 141:111385. [DOI: 10.1016/j.fct.2020.111385] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/29/2020] [Accepted: 04/19/2020] [Indexed: 12/15/2022]
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16
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Fu W, Cheng G, Ding Y, Deng Y, Guo P. Identification of hub genes and its correlation with the prognosis of acute myeloid leukemia based on high‐throughput data analysis. PRECISION RADIATION ONCOLOGY 2020. [DOI: 10.1002/pro6.1089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Wei Fu
- Department of Hematology925th Hospital of PLA Guiyang China
| | - Guo‐bin Cheng
- Department of Hematology925th Hospital of PLA Guiyang China
| | - Yao Ding
- Department of Hematology925th Hospital of PLA Guiyang China
| | - Ya‐jie Deng
- Department of Hematology925th Hospital of PLA Guiyang China
| | - Peng‐xiang Guo
- Department of HematologyGuizhou Provincial People's Hospital Guiyang China
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17
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Hu W, Wu X, Yu D, Zhao L, Zhu X, Li X, Huang T, Chu Z, Xu Y. Regulation of JNK signaling pathway and RIPK3/AIF in necroptosis-mediated global cerebral ischemia/reperfusion injury in rats. Exp Neurol 2020; 331:113374. [PMID: 32502579 DOI: 10.1016/j.expneurol.2020.113374] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/05/2020] [Accepted: 06/01/2020] [Indexed: 02/07/2023]
Abstract
Receptor-interacting protein kinase 3 (RIPK3) regulates a newly discovered cell death form called necroptosis. RIPK3 nuclear translocation and inflammatory factor release are involved in necroptosis after rat global cerebral ischemia/reperfusion (I/R) injury. The purpose of this study was to investigate the effects of interactions between the RIPK3 and apoptosis-inducing factor (AIF) necroptosis pathway and the JNK-mediated inflammatory pathway. Rats were subjected to 4-vessel occlusion and reperfusion injury. RIPK3 inhibitor GSK872, RIPk3 recombinant adeno-associated virus (rAAV) and JNK-specific inhibitor SP600125 were intracerebroventricular injected before I/R. Hippocampus CA1 tissue were obtained and RIPK3, AIF, p-JNK, IL-6 were determined by western blot analysis. The RIPK3 and AIF interaction were also analyzed by immunofluorescence and immunoprecipitation. The expression of endogenous RIPK3, AIF, p-JNK and IL-6 was increased in hippocampus CA1 in I/R group. In addition, RIPK3 was increased in both the total protein and nuclear protein. GSK872 administration reduced the number of neuron deaths and the expression of RIPK3, p-JNK and IL-6. GSK872 also improve the rat neurobehavior. While use RIPk3 rAAV treatment to overexpress RIPK3, it appeared lower neuron survival. Immunofluorescence staining demonstrated that RIPK3 and AIF formed as a novel complex in the cytoplasm first, and then nuclear translocation. GSK872 pretreatment decreased the number of RIPK3-positive cells and related to the generation of RIPK3-AIF complex in nuclear. Moreover, the production of inflammatory factors levels was found to be significantly elevated after I/R. We further use SP600125 to attenuate inflammation cascade. It not only inhibits the expression of inflammatory factors p-JNK and IL-6, but also inhibits RIPK3 and AIF in the cytoplasm. Collectively, the results of our study indicate that RIPK3-mediated necroptosis interacts with the JNK-mediated inflammatory signaling pathway to participate in global cerebral I/R injury. JNK-regulated inflammatory mediators may promote the necroptosis initiation.
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Affiliation(s)
- Wenjie Hu
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China; Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China
| | - Xiaodong Wu
- Department of Neurology, The Second Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China
| | - Dijing Yu
- Department of Ophthalmology, Wuhu Eye Hospital, Wuhu 241000, Anhui, China
| | - Li Zhao
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China
| | - Xiaolong Zhu
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China; Non-coding RNA Research Center of Wannan Medical College, Wuhu 241000, Anhui, China
| | - Xueqin Li
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China; Non-coding RNA Research Center of Wannan Medical College, Wuhu 241000, Anhui, China
| | - Tingting Huang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China
| | - Zhaohu Chu
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China.
| | - Yang Xu
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China; Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, Anhui, China; Non-coding RNA Research Center of Wannan Medical College, Wuhu 241000, Anhui, China.
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18
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Maduramicin induces apoptosis through ROS-PP5-JNK pathway in skeletal myoblast cells and muscle tissue. Toxicology 2019; 424:152239. [PMID: 31229567 DOI: 10.1016/j.tox.2019.152239] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/04/2019] [Accepted: 06/07/2019] [Indexed: 01/30/2023]
Abstract
Our previous work has shown that maduramicin, an effective coccidiostat used in the poultry production, executed its toxicity by inducing apoptosis of skeletal myoblasts. However, the underlying mechanism is not well understood. Here we show that maduramicin induced apoptosis of skeletal muscle cells by activating c-Jun N-terminal kinase (JNK) pathway in murine C2C12 and L6 myoblasts as well as skeletal muscle tissue. This is supported by the findings that inhibition of JNK with SP600125 or ectopic expression of dominant negative c-Jun attenuated maduramicin-induced apoptosis in C2C12 cells. Furthermore, we found that treatment with maduramicin reduced the cellular protein level of protein phosphatase 5 (PP5). Overexpression of PP5 substantially mitigated maduramicin-activated JNK and apoptosis. Moreover, we noticed that treatment with maduramicin elevated intracellular reactive oxygen species (ROS) level. Pretreatment with N-acetyl-L-cysteine (NAC), a ROS scavenger and antioxidant, suppressed maduramicin-induced inhibition of PP5 and activation of JNK as well as apoptosis. The results indicate that maduramicin induction of ROS inhibits PP5, which results in activation of JNK cascade, leading to apoptosis of skeletal muscle cells. Our finding suggests that manipulation of ROS-PP5-JNK pathway may be a potential approach to prevent maduramicin-induced apoptotic cell death in skeletal muscle.
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19
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Zhao Y, Sun H, Li X, Zha Y, Hou W. Hydroxysafflor yellow A attenuates high glucose-induced pancreatic β-cells oxidative damage via inhibiting JNK/c-jun signaling pathway. Biochem Biophys Res Commun 2018; 505:353-359. [PMID: 30249395 DOI: 10.1016/j.bbrc.2018.09.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 09/07/2018] [Indexed: 01/11/2023]
Abstract
Pancreatic β-cells apoptosis and dysfunction induced by glucose toxicity were attributed to the formation of excess oxidative damage. Some studies have found that hydroxysafflor yellow A has strong effects to scavenge oxidative stress and inhibit apoptosis. In order to explore the influence of HSYA on oxidative stress induced by high glucose and the potential mechanisms, we set up a high glucose damage model and induced oxidative stress in INS-1 rat insulinoma cells. N-acetylcysteine was added as a group of oxidative stress scavenger. After 72 h of cultivation, the related indexes of oxidative stress (reactive oxygen species, catalase, glutathione peroxidase, lipid peroxidation, and superoxide dismutase), apoptosis (caspase3, parp) and the function of glucose stimulated insulin secretion were determined. In addition, the signaling pathway proteins of C-Jun NH2 -terminal kinases (JNK), phosphorylated JNK, C-jun, phosphorylated C-jun were evaluated. Fluorescence microscopy, qRT-PCR, western blotting were the main methods used in the experiment. Our results showed that hydroxysafflor yellow A reduced pancreatic β-cells apoptosis by attenuating oxidative damage, and JNK/c-Jun signaling pathway was involved. It indicated a significant mechanism for the positive impacts of HSYA on oxidative stress induced by high glucose, and provide important basis for using HSYA in diabetic prevention and therapy.
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Affiliation(s)
- Ying Zhao
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, 250012, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan 250012, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine & health, China
| | - Hanchen Sun
- Shandong Provincial Medical Examination Office, Jinan, 250014, China
| | - Xiaosai Li
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, 250012, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan 250012, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine & health, China
| | - Yumei Zha
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, 250012, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan 250012, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine & health, China
| | - Weikai Hou
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, 250012, China; Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan 250012, China; Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province medicine & health, China.
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20
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Long M, Chen X, Wang N, Wang M, Pan J, Tong J, Li P, Yang S, He J. Proanthocyanidins Protect Epithelial Cells from Zearalenone-Induced Apoptosis via Inhibition of Endoplasmic Reticulum Stress-Induced Apoptosis Pathways in Mouse Small Intestines. Molecules 2018; 23:molecules23071508. [PMID: 29933637 PMCID: PMC6099583 DOI: 10.3390/molecules23071508] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/17/2018] [Accepted: 06/19/2018] [Indexed: 12/20/2022] Open
Abstract
This study evaluated the protective effect of proanthocyanidins (PCs) on reducing apoptosis in the mouse intestinal epithelial cell model MODE-K exposed to zearalenone (ZEA) through inhibition of the endoplasmic reticulum stress (ERS)-induced apoptosis pathway. Our results showed that PCs could reduce the rate of apoptosis in MODE-K cells exposed to ZEA (p < 0.01). PCs significantly increased the ZEA-induced antioxidant protective effects on the enzymes superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) and on the content of GSH. PCs also significantly decreased the ZEA-induced increase in the content of malondialdehyde (MDA). The analysis indicated that ZEA increased both mRNA and protein expression levels of C/EBP homologous protein (CHOP), GRP78, c-Jun N-terminal kinase (JNK), and cysteinyl aspartate specific proteinase 12 (caspase-12) (p < 0.05), which are related to the ERS-induced apoptosis pathway. ZEA decreased levels of the pro-apoptotic related protein Bcl-2 (p < 0.05) and increased the anti-apoptotic related protein Bax (p < 0.05). Co-treatment with PCs was also shown to significantly reverse the expression levels of these proteins in MODE-K cells. The results demonstrated that PCs could protect MODE-K cells from oxidative stress and apoptosis induced by ZEA. The underlying mechanism may be that PCs can alleviate apoptosis in mouse intestinal epithelial cells by inhibition of the ERS-induced apoptosis pathway.
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Affiliation(s)
- Miao Long
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Xinliang Chen
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Nan Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Mingyang Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jiawen Pan
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jingjing Tong
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Peng Li
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Shuhua Yang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jianbin He
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
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