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Kim SH, Oh SH. Sodium arsenite-induced cytotoxicity is regulated by BNIP3L/Nix-mediated endoplasmic reticulum stress responses and CCPG1-mediated endoplasmic reticulum-phagy. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104111. [PMID: 36925093 DOI: 10.1016/j.etap.2023.104111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 03/05/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
We elucidated the BNIP3L/Nix and SQSTM1/p62 molecular mechanisms in sodium arsenite (NaAR)-induced cytotoxicity. Considerable changes in the morphology and adhesion of H460 cells were observed in response to varying NaAR concentrations. NaAR exposure induced DNA damage-mediated apoptosis and Nix accumulation via proteasome inhibition. Nix targets the endoplasmic reticulum (ER), inducing ER stress responses. p62 and Nix were colocalized and their expressions were inversely correlated. Autophagy inhibition upregulated Nix, p62, cell cycle progression gene 1 (CCPG1), heme oxygenase (HO)- 1, and calnexin expression. Nix knockdown decreased the NaAR-induced ER stress and microtubule-associated protein 1 A/1B light-chain 3 (LC3) B-II levels and increased the CCPG1 and calnexin levels. p62 knockdown upregulated Nix, LC3-II, and CCPG1 expressions and the ER stress responses, indicating that p62 regulates Nix levels. Nix downstream pathways were mitigated by Ca2+ chelators. We demonstrate the critical roles of Nix and p62 in ER stress and ER-phagy in response to NaAR.
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Affiliation(s)
- Sang-Hun Kim
- Department of Anesthesiology and Pain Medicine, School of Medicine, Chosun University, 309 Pilmundaero, Dong-gu, Gwangju 501-759, South Korea
| | - Seon-Hee Oh
- School of Medicine, Chosun University, 309 Pilmundaero, Dong-gu, Gwangju 501-759, South Korea.
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2
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Zhang S, Gong H, Xie H, Huangfu Z, Tang Y, Xiao M, Li M, Li Q, Wang Y. An integrated analysis of Dynamin 1 Like: A new potential prognostic indicator in hepatocellular carcinoma. Mol Carcinog 2023; 62:786-802. [PMID: 36929853 DOI: 10.1002/mc.23524] [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: 07/15/2022] [Revised: 01/29/2023] [Accepted: 02/25/2023] [Indexed: 03/18/2023]
Abstract
Dynamin 1 Like (DNM1L), a member of dynamin superfamily capable of mediating mitochondrial outer membrane division, plays a key role in the progression of different types of tumors. However, the prognostic value, clinical significance of DNM1L and its specific mechanism involved in tumorigenesis of hepatocellular carcinoma (HCC) have not been investigated clearly. In this study, we found that the expression of DNM1L were significantly higher in HCC tissues than adjacent/normal liver tissues based on multiple data sets obtained from TCGA, GEO and ONCOMINE database, also its protein expression form Drp1 is significantly higher in HCC tissues than adjacent tissues, and is related to the degree of differentiation. Kaplan-Meier curves suggested that high DNM1L expression prominently correlated with poorer overall survival, progression-free survival, relapse-free survival and disease-specific survival. Multivariate analysis showed that higher DNM1L expression was independent prognostic factors of shorter overall survival and disease-free survival. Kyoto Encyclopedia of Genes and Genomes and Gene set enrichment analysis analysis combined with validation experiments revealed the regulatory role of DNM1L on key molecules in the metabolism of xenobiotics by cytochrome p450 pathway, and DNM1L may also affects invasion and metastasis capability of HCC by mediating extracellular matrix -receptor interaction pathway. Moreover, analysis showed that higher DNM1L, CYP2C9, CYP3A4, CYP1A2 expression were associated with the resistance to sorafenib therapy. TIMER and CIBERSORT analysis indicated that the increase of DNM1L expression may affect the infiltration of immune cells in the tumor microenvironment. Taken together, the above results indicated that DNM1L could be able to serve as a promising independent predictor and therapeutic target for HCC patients.
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Affiliation(s)
- Shuxian Zhang
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China.,Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Hanjuan Gong
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China
| | - Hailun Xie
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China
| | - Zhimin Huangfu
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yi Tang
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China.,Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Ming Xiao
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China.,Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Ming Li
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China.,Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Qingshu Li
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China.,Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yalan Wang
- Molecular Medicine and Cancer Research Center, Basic Medicine College, Chongqing Medical University, Chongqing, People's Republic of China.,Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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3
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Briones-Suarez L, Cifuentes M, Bravo-Sagua R. Secretory Factors from Calcium-Sensing Receptor-Activated SW872 Pre-Adipocytes Induce Cellular Senescence and A Mitochondrial Fragmentation-Mediated Inflammatory Response in HepG2 Cells. Int J Mol Sci 2023; 24:ijms24065217. [PMID: 36982291 PMCID: PMC10049719 DOI: 10.3390/ijms24065217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/27/2022] [Accepted: 12/29/2022] [Indexed: 03/11/2023] Open
Abstract
Adipose tissue inflammation in obesity has a deleterious impact on organs such as the liver, ultimately leading to their dysfunction. We have previously shown that activation of the calcium-sensing receptor (CaSR) in pre-adipocytes induces TNF-α and IL-1β expression and secretion; however, it is unknown whether these factors promote hepatocyte alterations, particularly promoting cell senescence and/or mitochondrial dysfunction. We generated conditioned medium (CM) from the pre-adipocyte cell line SW872 treated with either vehicle (CMveh) or the CaSR activator cinacalcet 2 µM (CMcin), in the absence or presence of the CaSR inhibitor calhex 231 10 µM (CMcin+cal). HepG2 cells were cultured with these CM for 120 h and then assessed for cell senescence and mitochondrial dysfunction. CMcin-treated cells showed increased SA-β-GAL staining, which was absent in TNF-α- and IL-1β-depleted CM. Compared to CMveh, CMcin arrested cell cycle, increased IL-1β and CCL2 mRNA, and induced p16 and p53 senescence markers, which was prevented by CMcin+cal. Crucial proteins for mitochondrial function, PGC-1α and OPA1, were decreased with CMcin treatment, concomitant with fragmentation of the mitochondrial network and decreased mitochondrial transmembrane potential. We conclude that pro-inflammatory cytokines TNF-α and IL-1β secreted by SW872 cells after CaSR activation promote cell senescence and mitochondrial dysfunction, which is mediated by mitochondrial fragmentation in HepG2 cells and whose effects were reversed with Mdivi-1. This investigation provides new evidence about the deleterious CaSR-induced communication between pre-adipocytes and liver cells, incorporating the mechanisms involved in cellular senescence.
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Affiliation(s)
- Lautaro Briones-Suarez
- Laboratory of Obesity and Metabolism (OMEGA), Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago 7830490, Chile
- Department of Nutrition and Public Health, Faculty of Health and Food Sciences, University of Bío-Bío, Chillán 3800708, Chile
| | - Mariana Cifuentes
- Laboratory of Obesity and Metabolism (OMEGA), Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago 7830490, Chile
- Center for Exercise, Metabolism and Cancer (CEMC), Faculty of Medicine, University of Chile, Santiago 8380453, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380492, Chile
- Correspondence: (M.C.); (R.B.-S.); Tel.: +56-229781428 (M.C.); +56-229781563 (R.B.-S.)
| | - Roberto Bravo-Sagua
- Laboratory of Obesity and Metabolism (OMEGA), Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago 7830490, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380492, Chile
- Interuniversity Center for Healthy Aging (CIES), Consortium of Universities of the State of Chile (CUECH), Santiago 8320216, Chile
- Correspondence: (M.C.); (R.B.-S.); Tel.: +56-229781428 (M.C.); +56-229781563 (R.B.-S.)
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Sun SJ, Deng P, Peng CE, Ji HY, Mao LF, Peng LZ. Selenium-Modified Chitosan Induces HepG2 Cell Apoptosis and Differential Protein Analysis. Cancer Manag Res 2022; 14:3335-3345. [PMID: 36465707 PMCID: PMC9716935 DOI: 10.2147/cmar.s382546] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 11/10/2022] [Indexed: 10/29/2023] Open
Abstract
INTRODUCTION Chitosan is the product of the natural polysaccharide chitin removing part of the acetyl group, and exhibits various physiological and bioactive functions. Selenium modification has been proved to further enhance the chitosan bioactivities, and has been a hot topic recently. METHODS The present study aimed to investigate the potential inhibitory mechanism of selenium-modified chitosan (SMC) on HepG2 cells through MTT assays, morphological observation, annexin V-FITC/PI double staining, mitochondrial membrane potential determination, cell-cycle detection, Western blotting, and two-dimensional gel electrophoresis (2-DE). RESULTS The results indicated that SMC can induce HepG2 cell apoptosis with the cell cycle arrested in the S and G2/M phases and gradual disruption of mitochondrial membrane potential, reduce the expression of Bcl2, and improve the expression of Bax, cytochrome C, cleaved caspase 9, and cleaved caspase 3. Also, 2-DE results showed that tubulin α1 B chain, myosin regulatory light chain 12A, calmodulin, UPF0568 protein chromosome 14 open reading frame 166, and the cytochrome C oxidase subunit 5B of HepG2 cells were downregulated in HepG2 cells after SMC treatment. DISCUSSION These data suggested that HepG2 cells induced apoptosis after SMC treatment via blocking the cell cycle in the S and G2/M phases, which might be mediated through the mitochondrial apoptotic pathway. These results could be of benefit to future practical applications of SMC in the food and drug fields.
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Affiliation(s)
- Su-Jun Sun
- Key Laboratory of Agro-Products Processing Technology of Shandong Province, Key Laboratory of Novel Food Resources Processing Ministry of Agriculture, Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, People’s Republic of China
| | - Peng Deng
- Key Laboratory of Agro-Products Processing Technology of Shandong Province, Key Laboratory of Novel Food Resources Processing Ministry of Agriculture, Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, People’s Republic of China
| | - Chun-E Peng
- Key Laboratory of Agro-Products Processing Technology of Shandong Province, Key Laboratory of Novel Food Resources Processing Ministry of Agriculture, Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, People’s Republic of China
| | - Hai-Yu Ji
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, People’s Republic of China
| | - Long-Fei Mao
- Key Laboratory of Agro-Products Processing Technology of Shandong Province, Key Laboratory of Novel Food Resources Processing Ministry of Agriculture, Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, People’s Republic of China
| | - Li-Zeng Peng
- Key Laboratory of Agro-Products Processing Technology of Shandong Province, Key Laboratory of Novel Food Resources Processing Ministry of Agriculture, Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, People’s Republic of China
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Tian Y, Qi Y, Cai H, Xu M, Zhang Y. Senegenin alleviates Aβ 1-42 induced cell damage through triggering mitophagy. JOURNAL OF ETHNOPHARMACOLOGY 2022; 295:115409. [PMID: 35640739 DOI: 10.1016/j.jep.2022.115409] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Senegenin (SEN), an active compound extracted from the traditional Chinese herb Polygala tenuifolia Willd. (a species in the genus Polygala, family Polygalaceae), could nourish neurons and resist neuronal damage in mouse models of Alzheimer's disease (AD). Amyloid-β (Aβ) depositions in neuronal cells may cause pathological changes such as oxidative stress which one return could cause severe damage to mitochondria in AD patients or animal models. Mitophagy is an important mechanism to selectively remove damaged mitochondria. In neurons, this process is mainly mediated by PTEN-induced putative kinase 1 (PINK1)/Parkin pathway. Previous studies have shown that SEN could reduce mitochondrial damage and inhibit apoptosis in neurons. Therefore, this study speculated that SEN might activate mitophagy to clear damaged mitochondria, thereby mitigating Aβ-induced cell damage in neuronal cells. AIM OF THE STUDY This study aimed to determine the effects of SEN on Aβ-induced cell damage, and further to explore whether SEN could induce mitophagy. Moreover, the regulatory role of mitophagy in the neuroptrotective effect of SEN would be elucidated. MATERIALS AND METHODS This study established an in vitro cell damage model using Aβ1-42 to treat mouse hippocampal neuron HT22 cells. The effects of SEN on cell damage were determined by MTT assay and lactate dehydrogenase (LDH) release assay. Reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) were detected by Cytation™5 cell imaging microplate detection system. The apoptotic rate was analyzed by flow cytometry. The effects of SEN on mitophagy were detected by transmission electron microscope, immunofluorescence and immunoblotting. RESULTS Firstly, HT22 cells were treated with 30 μM Aβ1-42 for 24 h to establish the damage model. It was found that 30 μM Aβ1-42 caused neuronal damages as evidenced by reduced cell viability, increased LDH release and ROS, collapsed MMP and elevated apoptosis. Secondly, Aβ1-42-incubated cells were treated with 10, 20, 40 and 60 μM SEN for 24 h. SEN significantly reduced the damage of Aβ1-42-incubated cells as shown by recovered cell viability and MMP, reduced apoptosis and ROS. Notably, SEN induced the formation of mitophagosomes and mitolysosomes, and elevated the conversion of LC3 I to LC3 II. Moreover, SEN down-regulated the expression of p62, promoted the accumulation of full-length PINK1 and the translocation of Parkin to mitochondria, decreased the expression of mitochondrial matrix protein HSP60, thus activating the PINK1/Parkin-mediated mitophagy. However, when cells were pretreated with 5 μM CsA (Cyclosporine A, a mitophagy inhibitor) for 2 h and then co-treated with 20 and 40 μM SEN for 24 h, the protective effects of SEN were compromised. CONCLUSIONS The present study demonstrated that SEN could alleviate Aβ1-42-induced cell damage through PINK1/Parkin-mediated mitophagy. Our findings justify the traditional use of P. tenuifolia in China with anti-aging or anti-neurodegenerative effects.
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Affiliation(s)
- Yihong Tian
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yongmei Qi
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
| | - Hui Cai
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province, Gansu Provincial Hospital, Lanzhou, 730000, China.
| | - Mengchen Xu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
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Zhang Z, Yi J, Xie B, Chen J, Zhang X, Wang L, Wang J, Hou J, Wei H. Parkin, as a Regulator, Participates in Arsenic Trioxide-Triggered Mitophagy in HeLa Cells. Curr Issues Mol Biol 2022; 44:2759-2771. [PMID: 35735630 PMCID: PMC9222214 DOI: 10.3390/cimb44060189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 06/05/2022] [Accepted: 06/16/2022] [Indexed: 11/16/2022] Open
Abstract
Parkin is a well-established synergistic mediator of mitophagy in dysfunctional mitochondria. Mitochondria are the main target of arsenic trioxide (ATO) cytotoxicity, and the effect of mitophagy on ATO action remains unclear. In this study, we used stable Parkin-expressing (YFP-Parkin) and Parkin loss-of-function mutant (Parkin C431S) HeLa cell models to ascertain whether Parkin-mediated mitophagy participates in ATO-induced apoptosis/cell death. Our data showed that the overexpression of Parkin significantly sensitized HeLa cells to ATO-initiated proliferation inhibition and apoptosis; however, the mutation of Parkin C431S significantly weakened this Parkin-mediated responsiveness. Our further investigation found that ATO significantly downregulated two fusion proteins (Mfn1/2) and upregulated fission-related protein (Drp1). Autophagy was also activated as evidenced by the formation of autophagic vacuoles and mitophagosomes, increased expression of PINK1, and recruitment of Parkin to impaired mitochondria followed by their degradation, accompanied by the increased transformation of LC3-I to LC3-II, increased expression of Beclin1 and decreased expression of P62 in YFP-Parkin HeLa cells. Enhanced mitochondrial fragmentation and autophagy indicated that mitophagy was activated. Furthermore, during the process of mitophagy, the overproduction of ROS implied that ROS might represent a key factor that initiates mitophagy following Parkin recruitment to mitochondria. In conclusion, our findings indicate that Parkin is critically involved in ATO-triggered mitophagy and functions as a potential antiproliferative target in cancer cells.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Hulai Wei
- School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China; (Z.Z.); (J.Y.); (B.X.); (J.C.); (X.Z.); (L.W.); (J.W.); (J.H.)
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Che L, Wu JS, Du ZB, He YQ, Yang L, Lin JX, Lei Z, Chen XX, Guo DB, Li WG, Lin YC, Lin ZN. Targeting Mitochondrial COX-2 Enhances Chemosensitivity via Drp1-Dependent Remodeling of Mitochondrial Dynamics in Hepatocellular Carcinoma. Cancers (Basel) 2022; 14:cancers14030821. [PMID: 35159089 PMCID: PMC8834292 DOI: 10.3390/cancers14030821] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary New therapeutic strategies are urgently needed to improve the anti-cancer effect for hepatocellular carcinoma (HCC). Overexpression of cyclooxygenase-2 (COX-2) is found in several types of cancers and correlates with a poor prognosis. However, it remains unclear how the mitochondrial translocation of COX-2 is involved in mitochondrial dynamics and sensitizes HCC cells to multipattern anti-tumor therapy. We explored the impact of targeting mitochondrial COX-2 (mito-COX-2) intervention toward mitochondrial dynamics on platinum-based chemotherapeutics in HCC cells and xenograft nude mouse models. Our study indicates that the mito-COX-2 represents a candidate predictive biomarker and potential target to regulate anti-cancer sensitization of HCC, and possibly for other types of COX-2-high-expression cancers. Abstract Mitochondria are highly dynamic organelles and undergo constant fission and fusion, which are both essential for the maintenance of cell physiological functions. Dysregulation of dynamin-related protein 1 (Drp1)-dependent mitochondrial dynamics is associated with tumorigenesis and the chemotherapeutic response in hepatocellular carcinoma (HCC). The enzyme cyclooxygenase-2 (COX-2) is overexpressed in most cancer types and correlates with a poor prognosis. However, the roles played by the translocation of mitochondrial COX-2 (mito-COX-2) and the interaction between mito-COX-2 and Drp1 in chemotherapeutic responses remain to be elucidated in the context of HCC. Bioinformatics analysis, paired HCC patient specimens, xenograft nude mice, immunofluorescence, transmission electron microscopy, molecular docking, CRISPR/Cas9 gene editing, proximity ligation assay, cytoplasmic and mitochondrial fractions, mitochondrial immunoprecipitation assay, and flow cytometry analysis were performed to evaluate the underlying mechanism of how mito-COX-2 and p-Drp1Ser616 interaction regulates the chemotherapeutic response via mitochondrial dynamics in vitro and in vivo. We found that COX-2 and Drp1 were frequently upregulated and confer a poor prognosis in HCC. We also found that the proportion of mito-COX-2 and p-Drp1Ser616 was increased in HCC cell lines. In vitro, we demonstrated that the enhanced mitochondrial translocation of COX-2 promotes its interaction with p-Drp1Ser616 via PTEN-induced putative kinase 1 (PINK1)-mediated Drp1 phosphorylation activation. This increase was associated with higher colony formation, cell proliferation, and mitochondrial fission. These findings were confirmed by knocking down COX-2 in HCC cells using CRISPR/Cas9 technology. Furthermore, inhibition of Drp1 using pharmacologic inhibitors (Mdivi-1) or RNA interference (siDNM1L) decreased mito-COX-2/p-Drp1Ser616 interaction-mediated mitochondrial fission, and increased apoptosis in HCC cells treated with platinum drugs. Moreover, inhibiting mito-COX-2 acetylation with the natural phytochemical resveratrol resulted in reducing cell proliferation and mitochondrial fission, occurring through upregulation of mitochondrial deacetylase sirtuin 3 (SIRT3), which, in turn, increased the chemosensitivity of HCC to platinum drugs in vitro and in vivo. Our results suggest that targeting interventions to PINK1-mediated mito-COX-2/p-Drp1Ser616-dependent mitochondrial dynamics increases the chemosensitivity of HCC and might help us to understand how to use the SIRT3-modulated mito-COX-2/p-Drp1Ser616 signaling axis to develop an effective clinical intervention in hepatocarcinogenesis.
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Affiliation(s)
- Lin Che
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Jia-Shen Wu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Ze-Bang Du
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Yu-Qiao He
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Lei Yang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Jin-Xian Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Zhao Lei
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Xiao-Xuan Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Dong-Bei Guo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
| | - Wen-Gang Li
- Department of Hepatobiliary Surgery and Pancreatic & Organ Transplantation Surgery, Xiang’an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361102, China;
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Yu-Chun Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
- Correspondence: (Y.-C.L.); (Z.-N.L.); Tel.: +86-592-2880615 (Y.-C.L.); Fax: +86-592-2881578 (Y.-C.L.)
| | - Zhong-Ning Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China; (L.C.); (J.-S.W.); (Z.-B.D.); (Y.-Q.H.); (L.Y.); (J.-X.L.); (Z.L.); (X.-X.C.); (D.-B.G.)
- Correspondence: (Y.-C.L.); (Z.-N.L.); Tel.: +86-592-2880615 (Y.-C.L.); Fax: +86-592-2881578 (Y.-C.L.)
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Liang C, Sun M, Zhong J, Miao C, Han X. The Role of Pink1-Mediated Mitochondrial Pathway in Propofol-Induced Developmental Neurotoxicity. Neurochem Res 2021; 46:2226-2237. [PMID: 34014489 DOI: 10.1007/s11064-021-03359-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 11/25/2022]
Abstract
The mechanisms underlying propofol-induced toxicity in developing neurons are still unclear. The aim of present study was to explore the role of Pink1 mediated mitochondria pathway in propofol-induced developmental neurotoxicity. The primary Neural Stem Cells (NSCs) were isolated from the hippocampus of E15.5 mice embryos and then treated with propofol. The effects of propofol on proliferation, differentiation, apoptosis, mitochondria ultrastructure and MMP of NSCs were investigated. In addition, the abundance of Pink1 and a group of mitochondria related proteins in the cytoplasm and/or mitochondria were investigated, which mainly included CDK1, Drp1, Parkin1, DJ-1, Mfn1, Mfn2 and OPA1. Moreover, the relationship between Pink1 and these molecules was explored using gene silencing, or pretreatment with protein inhibitors. Finally, the NSCs were pretreated with mitochondrial specific antioxidant (MitoQ) or Drp1 inhibitor (Mdivi-1), and then the toxic effects of propofol on NSCs were investigated. Our results indicated that propofol treatment inhibited NSCs proliferation and division, and promoted NSCs apoptosis. Propofol induced significant NSCs mitochondria deformation, vacuolization and swelling, and decreased MMP. Additional studies showed that propofol affected a group of mitochondria related proteins via Pink1 inhibition, and CDK1, Drp1, Parkin1 and DJ-1 are the important downstream proteins of Pink1. Finally, the effects of propofol on proliferation, differentiation, apoptosis, mitochondrial ultrastructure and MMP of NSCs were significantly attenuated by MitoQ or Mdivi-1 pretreatment. The present study demonstrated that propofol regulates the proliferation, differentiation and apoptosis of NSCs via Pink1mediated mitochondria pathway.
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Affiliation(s)
- Chao Liang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Minli Sun
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jing Zhong
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Changhong Miao
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Xiaodan Han
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
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9
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Zhong G, Wan F, Wu S, Jiang X, Tang Z, Zhang X, Huang R, Hu L. Arsenic or/and antimony induced mitophagy and apoptosis associated with metabolic abnormalities and oxidative stress in the liver of mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 777:146082. [PMID: 33676223 DOI: 10.1016/j.scitotenv.2021.146082] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/02/2021] [Accepted: 02/20/2021] [Indexed: 06/12/2023]
Abstract
Arsenic and antimony are coexisting cumulative environmental pollutants that cause severe and extensive biological toxicity. However, their interactions and toxic mechanisms in the liver remain to be fully elucidated. In this study, a total of sixty 4-week-old mice were divided into four groups and treated with 4 mg/kg arsenic trioxide (ATO) or/and 15 mg/kg antimony (Sb) for 60 days. The results demonstrated that biochemical indicators of hepatotoxicity (ALT, AST, ALP) were upregulated in all treated groups. Additionally, the oxidative burden of the liver was increased in the cotreated groups compared with the individual toxicant-treated groups. Meanwhile, mitochondrial injury, autophagosomes, hepatic-congestion and karyopyknosis were obviously observed in cotreated groups. Additionally, coupled with serum biochemical index (TG, TC), histopathology examination and metabolomics results, we found that cotreatment with ATO and Sb resulted in lipid metabolism disorder and steatosis of liver tissues. Our further investigation found that the levels of pro-apoptotic (Caspase-3, Caspase-9, Bax, P53, Cytc) and mitophagy (LC3-B, P62, PINK1, Parkin) indexes in the cotreated groups were markedly increased, whereas the levels of anti-apoptosis index (Bcl-2) were decreased. Collectively, these results show that co-exposure to ATO and Sb can cause abnormal liver energy metabolism and oxidative stress. Moreover, mitophagy and apoptosis play important roles in the mechanisms of arsenic/antimony cytotoxicity to mouse livers.
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Affiliation(s)
- Gaolong Zhong
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Fang Wan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Shaofeng Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Xuanxuan Jiang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Xiaoyong Zhang
- Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
| | - Riming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Lianmei Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
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10
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Jia X, Qiu T, Yao X, Jiang L, Wang N, Wei S, Tao Y, Pei P, Wang Z, Zhang J, Zhu Y, Yang G, Liu X, Liu S, Sun X. Arsenic induces hepatic insulin resistance via mtROS-NLRP3 inflammasome pathway. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123034. [PMID: 32544768 DOI: 10.1016/j.jhazmat.2020.123034] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/24/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Hepatic insulin resistance (IR) is the key event for arsenic-caused type 2 diabetes (T2D). However, the unequivocal mechanism of arsenic-induced hepatic IR remains unclear. The current study determined the role of NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome activation in arsenic-induced IR and revealed the underlying mechanism. Three-month NaAsO2 gavage led to glucose intolerance and insulin insensitivity, impaired hepatic insulin signaling. Additionally, NaAsO2 upregulated the level of oxidized mitochondrial DNA (ox-mtDNA) and mitophagy, thereby activating the NLRP3 inflammasome in SD rat liver. In vitro, we demonstrated that NaAsO2-induced IR depended upon the NLRP3 inflammasome activation. Moreover, inhibiting mitophagy mitigated the NLRP3 inflammasome activation and impaired insulin signaling induced by NaAsO2. Furthermore, mitochondrial reactive oxygen species (mtROS) scavenger alleviated the upregulated ox-mtDNA and mitophagy, thereby inhibiting the NLRP3 inflammasome activation, and improving insulin signaling. Taken together, these data demonstrated that mtROS-triggered ox-mtDNA, mitophagy, and the activation of NLRP3 inflammasome was involved in arsenic-induced hepatic IR.
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Affiliation(s)
- Xue Jia
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Tianming Qiu
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Xiaofeng Yao
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Liping Jiang
- Experimental Teaching Center of Public Health, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Ningning Wang
- Nutrition and Food Hygiene, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Sen Wei
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Ye Tao
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Pei Pei
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Zhidong Wang
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Jingyuan Zhang
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Yuhan Zhu
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Guang Yang
- Nutrition and Food Hygiene, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Xiaofang Liu
- Nutrition and Food Hygiene, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Shuang Liu
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
| | - Xiance Sun
- Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China; Global Health Research Center, Dalian Medical University, 9 Lvshun South Road, Dalian, 116044, PR China.
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11
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Mancilla TR, Davis LR, Aune GJ. Doxorubicin-induced p53 interferes with mitophagy in cardiac fibroblasts. PLoS One 2020; 15:e0238856. [PMID: 32960902 PMCID: PMC7508395 DOI: 10.1371/journal.pone.0238856] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 08/25/2020] [Indexed: 12/11/2022] Open
Abstract
Anthracyclines are the critical component in a majority of pediatric chemotherapy regimens due to their broad anticancer efficacy. Unfortunately, the vast majority of long-term childhood cancer survivors will develop a chronic health condition caused by their successful treatments and severe cardiac disease is a common life-threatening outcome that is unequivocally linked to previous anthracycline exposure. The intricacies of how anthracyclines such as doxorubicin, damage the heart and initiate a disease process that progresses over multiple decades is not fully understood. One area left largely unstudied is the role of the cardiac fibroblast, a key cell type in cardiac maturation and injury response. In this study, we demonstrate the effect of doxorubicin on cardiac fibroblast function in the presence and absence of the critical DNA damage response protein p53. In wildtype cardiac fibroblasts, doxorubicin-induced damage correlated with decreased proliferation and migration, cell cycle arrest, and a dilated cardiomyopathy gene expression profile. Interestingly, these doxorubicin-induced changes were completely or partially restored in p53-/- cardiac fibroblasts. Moreover, in wildtype cardiac fibroblasts, doxorubicin produced DNA damage and mitochondrial dysfunction, both of which are well-characterized cell stress responses induced by cytotoxic chemotherapy and varied forms of heart injury. A 3-fold increase in p53 (p = 0.004) prevented the completion of mitophagy (p = 0.032) through sequestration of Parkin. Interactions between p53 and Parkin increased in doxorubicin-treated cardiac fibroblasts (p = 0.0003). Finally, Parkin was unable to localize to the mitochondria in wildtype cardiac fibroblasts, but mitochondrial localization was restored in p53-/- cardiac fibroblasts. These findings strongly suggest that cardiac fibroblasts are an important myocardial cell type that merits further study in the context of doxorubicin treatment. A more robust knowledge of the role cardiac fibroblasts play in the development of doxorubicin-induced cardiotoxicity will lead to novel clinical strategies that will improve the quality of life of cancer survivors.
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Affiliation(s)
- T. R. Mancilla
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center San Antonio, San Antonio, TX, United States of America
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center San Antonio, San Antonio, TX, United States of America
| | - L. R. Davis
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center San Antonio, San Antonio, TX, United States of America
| | - G. J. Aune
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center San Antonio, San Antonio, TX, United States of America
- Department of Pediatrics, Division of Hematology-Oncology, University of Texas Health Science Center San Antonio, San Antonio, TX, United States of America
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12
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Synthesis and Characterization of Arsenic(III) Oxide Nanoparticles as Potent Inhibitors of MCF 7 Cell Proliferation through Proapoptotic Mechanism. BIONANOSCIENCE 2020. [DOI: 10.1007/s12668-020-00726-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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13
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Huo Y, Chen W, Zheng X, Zhao J, Zhang Q, Hou Y, Cai Y, Lu X, Jin X. The protective effect of EGF-activated ROS in human corneal epithelial cells by inducing mitochondrial autophagy via activation TRPM2. J Cell Physiol 2020; 235:7018-7029. [PMID: 32083315 DOI: 10.1002/jcp.29597] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 01/16/2020] [Indexed: 01/03/2023]
Abstract
Oxidative stress is a major pathogenesis of some ocular surface diseases. Our previous study demonstrated that epidermal growth factor (EGF)-activated reactive oxygen species (ROS) could protect against human corneal epithelial cell (HCE) injury. In the present study, we aimed to explore the role and mechanisms of oxidative stress and mitochondrial autophagy in HCE cells subjected to scratch injury. CCK-8 assays, EdU assays, Western blot analysis, wound-healing assays, and flow cytometry were conducted to determine cell viability, proliferation, protein expression, cell apoptosis, and intracellular ROS levels, respectively. The results showed that EGF could promote damage repair and inhibit cell apoptosis in scratch injured HCE cells by upregulating ROS (**p < .01, ***p < .001). EGF also induced mitochondrial autophagy and alleviated mitochondrial damage. Interestingly, the combination of the mitochondrial autophagy inhibitor and mitochondrial division inhibitor 1 (MDIVI-1) with EGF could reduce cell proliferation, viability, and the ROS level (*p < .05, **p < .01, ***p < .001). Treatment using the ROS inhibitor N-acetyl- l-cysteine abrogated the increase in mitochondrial membrane potential after EGF treatment. (*p < .05). Taken together, these findings indicated that EGF plays an important role in HCE damage repair and could activate ROS to protect against HCE injury by inducing mitochondrial autophagy via activation of TRPM2.
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Affiliation(s)
- Yanan Huo
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Wei Chen
- Department of Medical Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xiaoxiao Zheng
- Department of Medical Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jinchuan Zhao
- Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou, Zhejiang, China
| | - Qi Zhang
- Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou, Zhejiang, China
| | - Yuerou Hou
- Department of Medical Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Ying Cai
- Department of Medical Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xuemei Lu
- Department of Medical Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xiuming Jin
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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14
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Seleno-β-lactoglobulin (Se-β-Lg) induces mitochondria-dependant apoptosis in HepG2 cells. Mol Biol Rep 2019; 46:5025-5031. [PMID: 31364020 DOI: 10.1007/s11033-019-04953-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 06/27/2019] [Indexed: 12/31/2022]
Abstract
Selenium compounds have been widely investigated as novel anticancer agents due to high efficacy and selectivity against cancer cells in recent years. This study aimed to research the potential inhibitory effects of seleno-β-lactoglobulin (Se-β-Lg) on HepG2 cells in vitro. MTT results demonstrated that the synthetized Se-β-Lg exhibited strong antitumor activity on HepG2 cells with few side effects on human normal cells (LO2) and relatively weaker cytotoxic effects compared to inorganic selenium (SeO2). Scanning electron microscope (SEM), hoechst 33342/PI double staining, annexin V-FITC/PI staining and cell cycle detection results showed that Se-β-Lg could induce the apoptosis of HepG2 cells via arresting them in S and G2/M phases and lead to the obvious morphological changes (loss of adhesion, cell shrinkage, and membrane blebbing, membrane permeabilities and DNA fragmentation). Besides, JC-1 staining, western blotting (WB) and polymerase chain reaction (PCR) results showed that Se-β-Lg could gradually destroy the mitochondrial membrane potential of HepG2 cells, and finally resulting in the mitochondria-dependant apoptosis via up-regulation of Bax, Cytochrome c, Caspase-3 and down-regulation of Bcl-2. Our data could provide a theoretical basis for practical application of Se-β-Lg in food and drug industries.
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15
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Romero I, de Francisco P, Gutiérrez JC, Martín-González A. Selenium cytotoxicity in Tetrahymena thermophila: New clues about its biological effects and cellular resistance mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 671:850-865. [PMID: 30947056 DOI: 10.1016/j.scitotenv.2019.03.115] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/07/2019] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
Selenium is an essential micronutrient but at high concentrations can produce severe cytotoxicity and genomic damage. We have evaluated the cytotoxicity, ultrastructural and mitochondrial alterations of the two main selenium inorganic species; selenite and selenate, in the eukaryotic microorganism Tetrahymena thermophila. In this ciliate, selenite is more toxic than selenate. Their LC50 values were calculated as 27.65 μM for Se(IV) and 56.88 mM for Se(VI). Significant levels of peroxides/hydroperoxides are induced under low-moderate selenite or selenate concentrations. Se(VI) exposures induce an immediate mitochondrial membrane depolarization. Selenium treated cells show an intense vacuolization and some of them present numerous discrete and small electrondense particles, probably selenium deposits. Mitochondrial fusion, an intense swelling in peripheral mitochondria and mitophagy are detected in selenium treated cells, especially in those exposed to Se (IV). qRT-PCR analysis of diverse genes, encoding relevant antioxidant enzymes or other proteins, like metallothioneins, involved in an environmental general stress response, have shown that they may be crucial against Se(IV) and/or Se (VI) cytotoxicity.
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Affiliation(s)
- Ivan Romero
- Dpto. Genética, Fisiología y Microbiología, Facultad de Biología, C/. José Antonio Novais, 12, Universidad Complutense (UCM), 28040 Madrid, Spain
| | - Patricia de Francisco
- Dpto. Genética, Fisiología y Microbiología, Facultad de Biología, C/. José Antonio Novais, 12, Universidad Complutense (UCM), 28040 Madrid, Spain
| | - Juan Carlos Gutiérrez
- Dpto. Genética, Fisiología y Microbiología, Facultad de Biología, C/. José Antonio Novais, 12, Universidad Complutense (UCM), 28040 Madrid, Spain
| | - Ana Martín-González
- Dpto. Genética, Fisiología y Microbiología, Facultad de Biología, C/. José Antonio Novais, 12, Universidad Complutense (UCM), 28040 Madrid, Spain..
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16
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Fergie N, Todd N, McClements L, McAuley D, O’Kane C, Krasnodembskaya A. Hypercapnic acidosis induces mitochondrial dysfunction and impairs the ability of mesenchymal stem cells to promote distal lung epithelial repair. FASEB J 2019; 33:5585-5598. [PMID: 30649987 PMCID: PMC6436662 DOI: 10.1096/fj.201802056r] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/02/2019] [Indexed: 01/27/2023]
Abstract
Acute respiratory distress syndrome (ARDS) is a devastating disorder characterized by diffuse inflammation and edema formation. The main management strategy, low tidal volume ventilation, can be associated with the development of hypercapnic acidosis (HCA). Mesenchymal stem cells (MSCs) are a promising therapeutic candidate currently in early-phase clinical trials. The effects of HCA on the alveolar epithelium and capillary endothelium are not well established. The therapeutic efficacy of MSCs has never been reported in HCA. In the present study, we evaluated the effects of HCA on inflammatory response and reparative potential of the primary human small airway epithelial and lung microvasculature endothelial cells as well as on the capacity of bone marrow-derived MSCs to promote wound healing in vitro. We demonstrate that HCA attenuates the inflammatory response and reparative potential of primary human small airway epithelium and capillary endothelium and induces mitochondrial dysfunction. It was found that MSCs promote lung epithelial wound repair via the transfer of functional mitochondria; however, this proreparative effect of MSCs was lost in the setting of HCA. Therefore, HCA may adversely impact recovery from ARDS at the cellular level, whereas MSCs may not be therapeutically beneficial in patients with ARDS who develop HCA.-Fergie, N., Todd, N., McClements, L., McAuley, D., O'Kane, C., Krasnodembskaya, A. Hypercapnic acidosis induces mitochondrial dysfunction and impairs the ability of mesenchymal stem cells to promote distal lung epithelial repair.
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Affiliation(s)
- Nicola Fergie
- Centre for Experimental Medicine, School of Medicine, Dentistry, and Biomedical Sciences, Queen’s University of Belfast, Belfast, United Kingdom
| | - Naomi Todd
- Centre for Experimental Medicine, School of Medicine, Dentistry, and Biomedical Sciences, Queen’s University of Belfast, Belfast, United Kingdom
| | - Lana McClements
- Centre for Experimental Medicine, School of Medicine, Dentistry, and Biomedical Sciences, Queen’s University of Belfast, Belfast, United Kingdom
| | - Danny McAuley
- Centre for Experimental Medicine, School of Medicine, Dentistry, and Biomedical Sciences, Queen’s University of Belfast, Belfast, United Kingdom
| | - Cecilia O’Kane
- Centre for Experimental Medicine, School of Medicine, Dentistry, and Biomedical Sciences, Queen’s University of Belfast, Belfast, United Kingdom
| | - Anna Krasnodembskaya
- Centre for Experimental Medicine, School of Medicine, Dentistry, and Biomedical Sciences, Queen’s University of Belfast, Belfast, United Kingdom
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17
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Zeinvand-Lorestani M, Kalantari H, Khodayar MJ, Teimoori A, Saki N, Ahangarpour A, Rahim F, Khorsandi L. Dysregulation of Sqstm1, mitophagy, and apoptotic genes in chronic exposure to arsenic and high-fat diet (HFD). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34351-34359. [PMID: 30302732 DOI: 10.1007/s11356-018-3349-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Arsenic (As) is a toxic and hazardous metalloid. Unfortunately, its presence in drinking water together with wrong nutritional patterns is associated with an increase in the occurrence of metabolic disorders in young people. Degradation of mitochondria is presented by a specific form of autophagy called mitophagy which is an important landmark leading to apoptosis during lipotoxicity. Lipotoxicity and cellular toxicity due to arsenic intake can lead to changes in mitophagy and apoptosis. The protein derived from SQSTM1 gene, also called p62, plays an important role in energy homeostasis in the liver, and it can contribute to the regulation of autophagic responses given its effect on signaling of mTOR, MAPK, and NF-KB. Consequently, changes in Sqstm1, mitophagy (BNIP3), and apoptotic (caspase 3) genes in the livers of NMRI mice were examined with the use of real-time RT-PCR Array followed by exposure to an environmentally relevant and negligible cytotoxic concentration of arsenite (50 ppm) in drinking water while being fed with a high-fat diet (HFD) or low-fat diet (LFD) for 20 weeks (LFD-As and HFD-As groups). While LFD-As and HFD groups showed a decrease in BNIP3 expression, a significant increase was observed in the HFD-As group. P62 gene showed downregulation in LFD-As and HFD groups, and upregeneration was observed in the HFD-As group. Caspase 3 showed increased expression as the key factor associated with apoptotic liver cell death in the three groups, with the highest value in HFD-As group. Overall, the changes observed in the expression of Sqstm1, BNIP3, and caspase 3 in this study can be related to the level of liver damage caused by exposure to arsenic and HFD and probably, BNIP3 pro-apoptotic protein is associated with an increased cell death due to HFD and As.
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Affiliation(s)
- Marzieh Zeinvand-Lorestani
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Heibatullah Kalantari
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Javad Khodayar
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Ali Teimoori
- Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Najmaldin Saki
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Akram Ahangarpour
- Health Research Institute, Diabetes Research Center, Department of Physiology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Fakher Rahim
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Layasadat Khorsandi
- Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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18
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He L, Zhou Q, Huang Z, Xu J, Zhou H, Lv D, Lu L, Huang S, Tang M, Zhong J, Chen JX, Luo X, Li L, Chen L. PINK1/Parkin-mediated mitophagy promotes apelin-13-induced vascular smooth muscle cell proliferation by AMPKα and exacerbates atherosclerotic lesions. J Cell Physiol 2018; 234:8668-8682. [PMID: 30456860 DOI: 10.1002/jcp.27527] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 09/10/2018] [Indexed: 01/08/2023]
Abstract
Aberrant proliferation of vascular smooth muscle cells (VSMC) is a critical contributor to the pathogenesis of atherosclerosis (AS). Our previous studies have demonstrated that apelin-13/APJ confers a proliferative response in VSMC, however, its underlying mechanism remains elusive. In this study, we aimed to investigate the role of mitophagy in apelin-13-induced VSMC proliferation and atherosclerotic lesions in apolipoprotein E knockout (ApoE-/-) mice. Apelin-13 enhances human aortic VSMC proliferation and proliferative regulator proliferating cell nuclear antigen expression in dose and time-dependent manner, while is abolished by APJ antagonist F13A. We observe the engulfment of damage mitochondria by autophagosomes (mitophagy) of human aortic VSMC in apelin-13 stimulation. Mechanistically, apelin-13 increases p-AMPKα and promotes mitophagic activity such as the LC3I to LC3II ratio, the increase of Beclin-1 level and the decrease of p62 level. Importantly, the expressions of PINK1, Parkin, VDAC1, and Tom20 are induced by apelin-13. Conversely, blockade of APJ by F13A abolishes these stimulatory effects. Human aortic VSMC transfected with AMPKα, PINK1, or Parkin and subjected to apelin-13 impairs mitophagy and prevents proliferation. Additional, apelin-13 not only increases the expression of Drp1 but also reduces the expressions of Mfn1, Mfn2, and OPA1. Remarkably, the mitochondrial division inhibitor-1(Mdivi-1), the pharmacological inhibition of Drp1, attenuates human aortic VSMC proliferation. Treatment of ApoE-/- mice with apelin-13 accelerates atherosclerotic lesions, increases p-AMPKα and mitophagy in aortic wall in vivo. Finally, PINK1-/- mutant mice with apelin-13 attenuates atherosclerotic lesions along with defective in mitophagy. PINK1/Parkin-mediated mitophagy promotes apelin-13-evoked human aortic VSMC proliferation by activating p-AMPKα and exacerbates the progression of atherosclerotic lesions.
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Affiliation(s)
- Lu He
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China.,Department of Neurosurgery, First Affiliated Hospital, University of South China, Hengyang, China
| | - Qionglin Zhou
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Zheng Huang
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Jin Xu
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Hong Zhou
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Deguan Lv
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Liqun Lu
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Shifang Huang
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Mingzhu Tang
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Jiuchang Zhong
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China
| | - Jian-Xiong Chen
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Xuling Luo
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Lanfang Li
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Linxi Chen
- Institute of Pharmacy and Pharmacology, Province Cooperative Innovation Center for Molecular Target New Drug Study, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
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Yin J, Guo J, Zhang Q, Cui L, Zhang L, Zhang T, Zhao J, Li J, Middleton A, Carmichael PL, Peng S. Doxorubicin-induced mitophagy and mitochondrial damage is associated with dysregulation of the PINK1/parkin pathway. Toxicol In Vitro 2018; 51:1-10. [PMID: 29729358 DOI: 10.1016/j.tiv.2018.05.001] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/28/2018] [Accepted: 05/01/2018] [Indexed: 10/17/2022]
Abstract
The usefulness of doxorubicin (DOX), a potent anticancer agent, is limited by its cardiotoxicity. Mitochondria play a central role in DOX-induced cardiotoxicity though the precise mechanisms are still obscure. Increasing evidence indicates that excessive activation of mitophagy and mitochondrial dysfunction are key causal events leading to DOX-induced cardiac injury. The PINK1/parkin pathway has emerged as a critical pathway in regulation of mitophagy as well as mitochondrial function. The present study was aimed to investigate the role of PINK1/parkin pathway in DOX-induced mitochondrial damage and cardiotoxicity. Our results showed that DOX concentration-dependently induced cytotoxicity and mitochondrial toxic effects including mitochondrial superoxide accumulation, decreased mitochondrial membrane potential and mitochondrial DNA copy number, as well as mitochondrial ultrastructural alterations. DOX induced mitophagy as evidenced by increases of the markers of autophagosomes, LC3, Beclin 1, reduction of p62, and co-localization of LC3 in mitochondria. DOX activated PINK1/parkin pathway and promoted translocation of PINK1/parkin to mitochondria. Meanwhile, DOX inhibited the expression of PGC-1α and its downstream targets nuclear respiratory factor 1 (NRF1) and mitochondrial transcription factor A (TFAM), and reduced the expression of mitochondrial proteins. Inhibition of mitophagy by mdivi-1 was found to attenuate activation of the PINK1/parkin pathway by DOX and preserve mitochondrial biogenesis, consequently mitigating DOX-induced mitochondrial superoxide overproduction and mitochondrial dysfunction. Moreover, scavenging mitochondrial superoxide by Mito-tempo was also found to effectively attenuate activation of the PINK1/parkin pathway and rescue the cells from DOX-induced adverse effects. Taken together, these findings suggest that DOX-induced mitophagy and mitochondrial damage in cardiomyocytes are mediated, at least in part, by dysregulation of the PINK1/parkin pathway.
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Affiliation(s)
- Jian Yin
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China; Academy of Military Medicines, Aceademy of Military Sciences, Beijing 100850, China
| | - Jiabin Guo
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China.
| | - Qiang Zhang
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Lan Cui
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Li Zhang
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Tingfen Zhang
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Jun Zhao
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Jin Li
- Unilever Safety and Environmental Assurance Center, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Alistair Middleton
- Unilever Safety and Environmental Assurance Center, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Paul L Carmichael
- Unilever Safety and Environmental Assurance Center, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Shuangqing Peng
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China.
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Zhang C, Huang J, An W. Hepatic stimulator substance resists hepatic ischemia/reperfusion injury by regulating Drp1 translocation and activation. Hepatology 2017. [PMID: 28646508 DOI: 10.1002/hep.29326] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
UNLABELLED Ischemia/reperfusion injury, induced by abnormal mitochondrial fission-related apoptosis, is a major concern in liver transplantation settings. Our previous studies have demonstrated that hepatic stimulator substance (HSS) is an antiapoptotic effector and could protect liver from ischemia/reperfusion injury. However, the underlying mechanism remains unclear. In the present study, we report that in vitro and in vivo HSS could regulate mitochondrial fission and hepatocyte apoptosis during liver ischemia/reperfusion injury by orchestrating the translocation and activation of dynamin-related protein 1 (Drp1). Using a mouse model of ischemia/reperfusion-induced liver injury, we found that HSS-haploinsufficient (HSS+/- ) mice displayed exacerbated liver damage based on their increased serum aminotransferase levels, cell structural destruction, and apoptosis levels compared to wild-type (HSS+/+ ) littermates. Disruption of HSS markedly increased cyclin-dependent kinase 1 (CDK1) and Bax expression, accompanied by elevated phosphorylated Drp1 and release of cytochrome c. In parallel in vitro studies, we found that HSS could inhibit the expression of CDK1 and that HSS inhibits hepatocyte apoptosis through its suppression of CDK1/cyclin B-mediated phosphorylation at Ser-616 of Drp1, thereby decreasing Drp1 accumulation in mitochondria and Drp1-mediated activation of the mitochondrial fission program. On the contrary, knockdown of HSS increased CDK1 as well as Drp1 phosphorylation and aggravated hepatocellular apoptosis. Mechanistic investigation showed that HSS was able to reduce the stability and translation of CDK1 mRNA by modulating the expression of several microRNAs (miRs), including miR-410-3p, miR-490-3p, and miR-582-5p. CONCLUSION Our data reveal a novel mechanism for HSS in regulating the mitochondrial fission machinery and further suggest that modulation of HSS may provide a therapeutic approach for combating liver damage. (Hepatology 2017;66:1989-2001).
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Affiliation(s)
- Chao Zhang
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Jing Huang
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
| | - Wei An
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China
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