1
|
pPe Op inhibits HGC-27 cell proliferation, migration and invasion by upregulating miR-30b-5p and down-regulating the Rac1/Cdc42 pathway. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1897-1908. [PMID: 36789688 PMCID: PMC10157518 DOI: 10.3724/abbs.2022193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Gastric cancer is the fifth most frequently occurring and the fourth most lethal malignant cancer worldwide. A bioactive protein (pPe Op) from Omphalia lapidescens exhibits significant inhibitory effects on gastric cancer cells. miRNA deep sequencing analysis shows that miR-30b-5p is significantly upregulated in HGC-27 cells treated with pPe Op. Verification results show that the expression level of miR-30b-5p is significantly increased in HGC-27 cells after pPe Op treatment. Additionally, miR-30b-5p is significantly downregulated in clinical gastric cancer tissues compared to that in adjacent normal tissues. Following pPe Op treatment and/or transfection with miR-30b-5p mimic, the proliferation, migration, and invasion of HGC-27 cells are significantly impaired. Immunofluorescence microscopy shows that pPe Op and/or miR-30b-5p destroy(s) microfilaments and microstructures and inhibit(s) the formation of pseudopodia. Bioinformatics analysis, dual-luciferase reporter assay, and western blot analysis confirm that miR-30b-5p downregulates Rac1/Cdc42 expression and activation by targeting RAB22A. Available data indicate that miR-30b-5p plays an anti-gastric cancer role in mediating pPe Op. pPe Op upregulates miR-30b-5p expression, which in turn inhibits RAB22A expression, resulting in a reduction in the expression and activation of Rac1 and Cdc42 and their downstream targets, thus destroying the cytoskeletal structure and inhibiting the proliferation, migration, and invasion of cancer cells.
Collapse
|
2
|
Ho VTTX, Song MS, Kim G, Nguyen NB, Dao TP, Lee SY, Joo SW. Photothermal plasmonic microballs for non-contact single-cell calcium ionophore delivery in heterogeneous cells. Chem Commun (Camb) 2022; 59:195-198. [PMID: 36477026 DOI: 10.1039/d2cc05272e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hierarchical plasmonic nanostructures comprising gold nanorod (AuNR)-covered microballs via syringe-injection reduction show good potential for selective single-cell calcium ionophore (A23187) delivery and apoptosis induction in heterogenous cancer cells.
Collapse
Affiliation(s)
- Vuong Thi Thanh Xuan Ho
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul, 06978, Republic of Korea.
| | - Min Seok Song
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul, 06978, Republic of Korea.
| | - Gun Kim
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute of Veterinary Science, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea.
| | - Nguyen Binh Nguyen
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul, 06978, Republic of Korea.
| | - Thi Phuong Dao
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul, 06978, Republic of Korea.
| | - So Yeong Lee
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute of Veterinary Science, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea.
| | - Sang-Woo Joo
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul, 06978, Republic of Korea.
| |
Collapse
|
3
|
SUMO-Modified FADD Recruits Cytosolic Drp1 and Caspase-10 to Mitochondria for Regulated Necrosis. Mol Cell Biol 2017; 37:MCB.00254-16. [PMID: 27799292 DOI: 10.1128/mcb.00254-16] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 10/20/2016] [Indexed: 01/02/2023] Open
Abstract
Fas-associated protein with death domain (FADD) plays a key role in extrinsic apoptosis. Here, we show that FADD is SUMOylated as an essential step during intrinsic necrosis. FADD was modified at multiple lysine residues (K120/125/149) by small ubiquitin-related modifier 2 (SUMO2) during necrosis caused by calcium ionophore A23187 and by ischemic damage. SUMOylated FADD bound to dynamin-related protein 1 (Drp1) in cells both in vitro and in ischemic tissue damage cores, thus promoting Drp1 recruitment by mitochondrial fission factor (Mff) to accomplish mitochondrial fragmentation. Mitochondrial-fragmentation-associated necrosis was blocked by FADD or Drp1 deficiency and SUMO-defective FADD expression. Interestingly, caspase-10, but not caspase-8, formed a ternary protein complex with SUMO-FADD/Drp1 on the mitochondria upon exposure to A23187 and potentiated Drp1 oligomerization for necrosis. Moreover, the caspase-10 L285F and A414V mutants, found in autoimmune lymphoproliferative syndrome and non-Hodgkin lymphoma, respectively, regulated this necrosis. Our study reveals an essential role of SUMOylated FADD in Drp1- and caspase-10-dependent necrosis, providing insights into the mechanism of regulated necrosis by calcium overload and ischemic injury.
Collapse
|
4
|
Wang K, An T, Zhou LY, Liu CY, Zhang XJ, Feng C, Li PF. E2F1-regulated miR-30b suppresses Cyclophilin D and protects heart from ischemia/reperfusion injury and necrotic cell death. Cell Death Differ 2015; 22:743-54. [PMID: 25301066 PMCID: PMC4392072 DOI: 10.1038/cdd.2014.165] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/10/2014] [Accepted: 09/01/2014] [Indexed: 12/16/2022] Open
Abstract
Cardiovascular disease remains the leading cause of morbidity and mortality worldwide. Cell death is a hallmark characteristic of various cardiac diseases, including myocardial infarction and heart failure. Emerging evidences suggest that necrosis is programmed and is one of the main forms of cell death in the pathological process in cardiac diseases. However, the molecular components regulating programmed necrosis in heart remain largely unidentified. Here we report that miR-30b, Cyclophilin D (CypD) and E2F1 constitute an axis that regulates necrosis. The results show that knockdown of CypD attenuated necrosis in the cellular model and also myocardial infarction in the animal model. miR-30b suppresses the translation of CypD and thus inhibits CypD-mediated necrotic cell death in cardiomyocytes. Cardiac-specific miR-30b transgenic mice exhibit reduced necrosis and myocardial infarct size upon ischemia/reperfusion (I/R) injury. Further, we identify that E2F1 transcriptionally represses miR-30b expression. Knockdown of E2F1 in cardiomyocytes inhibits necrotic cell death, and E2F1 knockout mice show reduced necrosis and myocardial infarct size upon I/R. Our present study identifies a novel signaling pathway composed of E2F1, miR-30b and CypD that regulates myocardial necrosis. This discovery will not only provide de novo regulators in the necrotic process but will also shed new light on the effective therapy of myocardial infarction and heart failure.
Collapse
Affiliation(s)
- K Wang
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao 266021, China
| | - T An
- State Key Laboratory of Cardiovascular Disease, Heart Failure center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - L-Y Zhou
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao 266021, China
| | - C-Y Liu
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - X-J Zhang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - C Feng
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - P-F Li
- Center for Developmental Cardiology, Institute for Translational Medicine, College of Medicine, Qingdao University, Qingdao 266021, China
| |
Collapse
|
5
|
Bastian A, Thorpe JE, Disch BC, Bailey-Downs LC, Gangjee A, Devambatla RKV, Henthorn J, Humphries KM, Vadvalkar SS, Ihnat MA. A small molecule with anticancer and antimetastatic activities induces rapid mitochondrial-associated necrosis in breast cancer. J Pharmacol Exp Ther 2015; 353:392-404. [PMID: 25720766 DOI: 10.1124/jpet.114.220335] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Therapy for treatment-resistant breast cancer provides limited options and the response rates are low. Therefore, the development of therapies with alternative chemotherapeutic strategies is necessary. AG311 (5-[(4-methylphenyl)thio]-9H-pyrimido[4,5-b]indole-2,4-diamine), a small molecule, is being investigated in preclinical and mechanistic studies for treatment of resistant breast cancer through necrosis, an alternative cell death mechanism. In vitro, AG311 induces rapid necrosis in numerous cancer cell lines as evidenced by loss of membrane integrity, ATP depletion, HMGB1 (high-mobility group protein B1) translocation, nuclear swelling, and stable membrane blebbing in breast cancer cells. Within minutes, exposure to AG311 also results in mitochondrial depolarization, superoxide production, and increased intracellular calcium levels. Additionally, upregulation of mitochondrial oxidative phosphorylation results in sensitization to AG311. This AG311-induced cell death can be partially prevented by treatment with the mitochondrial calcium uniporter inhibitor, Ru360 [(μ)[(HCO2)(NH3)4Ru]2OCl3], or an antioxidant, lipoic acid. Additionally, AG311 does not increase apoptotic markers such as cleavage of poly (ADP-ribose) polymerase (PARP) or caspase-3 and -7 activity. Importantly, in vivo studies in two orthotopic breast cancer mouse models (xenograft and allograft) demonstrate that AG311 retards tumor growth and reduces lung metastases better than clinically used agents and has no gross or histopathological toxicity. Together, these data suggest that AG311 is a first-in-class antitumor and antimetastatic agent inducing necrosis in breast cancer tumors, likely through the mitochondria.
Collapse
Affiliation(s)
- Anja Bastian
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Jessica E Thorpe
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Bryan C Disch
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Lora C Bailey-Downs
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Aleem Gangjee
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Ravi K V Devambatla
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Jim Henthorn
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Kenneth M Humphries
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Shraddha S Vadvalkar
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| | - Michael A Ihnat
- Department of Pharmaceutical Sciences (A.B., J.E.T., B.C.D., M.A.I.), Department of Physiology (A.B.), Flow Cytometry and Imaging Laboratory (J.H.), University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; DormaTarg, Inc., Oklahoma City, Oklahoma (B.C.D., L.C.B.D., M.A.I.); Division of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania (A.G., R.K.V.D.); and Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma (K.M.H., S.S.V.)
| |
Collapse
|
6
|
Li GD, Kawashima H, Ogose A, Ariizumi T, Hotta T, Kuwano R, Urata Y, Fujiwara T, Endo N. Telomelysin shows potent antitumor activity through apoptotic and non-apoptotic cell death in soft tissue sarcoma cells. Cancer Sci 2013; 104:1178-88. [PMID: 23718223 DOI: 10.1111/cas.12208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 05/08/2013] [Accepted: 05/08/2013] [Indexed: 01/09/2023] Open
Abstract
This study investigated the pathway underlying the antitumor activity of telomelysin, a telomerase-dependent, replication-selective oncolytic adenovirus, in soft tissue sarcoma cells. Treatment with telomelysin alone resulted in simultaneous induction of apoptosis and autophagy, whereas cotreatment with telomelysin and 3-methyladenine significantly reduced cell viability and increased apoptosis and the cellular ATP level compared to treatment with telomelysin alone, indicating that telomelysin-mediated autophagy is a death-protective but not death-promoting process. Cotreatment with Z-Val-Ala-Asp-CH2F significantly increased cellular ATP depletion compared to telomelysin-alone treatment while inhibiting telomelysin-induced apoptosis and having no significant effect on cell viability, indicating that it promotes transition from apoptotic to necrotic cell death.
Collapse
Affiliation(s)
- Gui-Dong Li
- Division of Orthopedic Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Jiang Y, Rao K, Yang G, Chen X, Wang Q, Liu A, Zheng H, Yuan J. Benzo(a)pyrene induces p73 mRNA expression and necrosis in human lung adenocarcinoma H1299 cells. ENVIRONMENTAL TOXICOLOGY 2012; 27:202-210. [PMID: 20862736 DOI: 10.1002/tox.20631] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 06/01/2010] [Accepted: 06/06/2010] [Indexed: 05/29/2023]
Abstract
p53 can mediate DNA damage-induced apoptosis in various cell lines treated with Benzo(a)pyrene (BaP). However, the potential role of p73, one of the p53 family members, in BaP-induced apoptotic cell death remains to be determined. In this study, normal fetal lung fibroblasts (MRC-5) and human lung adenocarcinoma cells (H1299, p53-null) were treated with BaP at concentrations of 8, 16, 32, 64, and 128 μM for 4 and 12 h. The oxidative stress status, extent of DNA damage, expression of p53, p73, mdm2, bcl-2, and bax at the mRNA and protein levels, and the percentages of apoptosis and/or necrosis were assessed. In the two BaP-treated cell lines, we observed increased malondialdehyde (MDA) formation and decreased superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity at 4 h after the treatment; furthermore, at the time points of 4 and 12 h, we observed extremely high levels of DNA damage. In addition, at 4 h after the treatment, BaP had induced necrosis in MRC-5 and H1299 cells, but it had inhibited apoptosis in MRC-5 cells (P < 0.01 for all). Furthermore, in BaP-treated H1299 cells, only the p73 mRNA level was up-regulated. The results suggested that BaP-induced DNA damage could trigger a shift from apoptotic cell death toward necrotic cell death and that necrotic cell death is independent of p53 and p73 in these cell lines. Future studies are needed to investigate the time course of changes in the type of BaP-induced cell death in more cell lines.
Collapse
Affiliation(s)
- Ying Jiang
- Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Pranlukast attenuates hydrogen peroxide-induced necrosis in endothelial cells by inhibiting oxygen reactive species-mediated collapse of mitochondrial membrane potential. J Cardiovasc Pharmacol 2011; 57:479-88. [PMID: 21283018 DOI: 10.1097/fjc.0b013e31821076d3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Recently, we reported that pranlukast, an antagonist of cysteinyl leukotriene receptor 1, attenuates ischemic injury in endothelial cells by decreasing reactive oxygen species (ROS) production and inhibiting nuclear factor-κB activation in a leukotriene-independent manner. In this study, we investigated the effect of pranlukast on oxidative stress injury induced by hydrogen peroxide (H2O2) in EA.hy926 cells, a human endothelial cell line, and the possible mechanisms. METHODS AND RESULTS We found that H2O2 reduced cell viability and increased lactate dehydrogenase release in a concentration- and time-dependent manner. Necrosis was the main death mode, and the necrotic rate increased 32% after exposure to 220 μM H2O2 for 4 hours. Pretreatment with pranlukast significantly ameliorated the reduced viability and the increased lactate dehydrogenase release and necrosis after exposure to H2O2. We next examined the mechanisms underlying the antinecrotic effects of pranlukast. The results showed that pranlukast attenuated excessive ROS production and ameliorated the reduced superoxide dismuase and glutathione peroxidase activity in EA.hy926 cells exposed to H2O2. Pranlukast also inhibited the collapse of mitochondrial membrane potential (MMP) induced by H2O2. Inhibition of ROS production by N-acetyl-l-cysteine, a powerful antioxidant, reduced MMP collapse and necrosis. Inhibition of MMP collapse by cyclosporine A, a mitochondrial permeability transition inhibitor, attenuated necrosis but failed to reduce ROS production. In addition, we found no expression of 5-lipoxygenase in EA.hy926 cells and zileuton, a 5-lipoxygenase inhibitor, did not affect the cellular injury induced by H2O2. CONCLUSION Pranlukast protects endothelial cells from H2O2-induced necrosis by inhibiting ROS-mediated collapse of mitochondrial membrane potential, and this is leukotriene-independent.
Collapse
|
9
|
Iwasaki R, Ito K, Ishida T, Hamanoue M, Adachi S, Watanabe T, Sato Y. Catechin, green tea component, causes caspase-independent necrosis-like cell death in chronic myelogenous leukemia. Cancer Sci 2011; 100:349-56. [PMID: 19200260 DOI: 10.1111/j.1349-7006.2008.01046.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Management strategies of chronic phase chronic myelogenous leukemia (CML) have been revolutionized due to the discovery of a selective tyrosine kinase inhibitor, imatinib (Gleevec, STI571), which is substantially improving median survival. However, emergence of imatinib-resistance has put up a serious problem that requires novel treatment methods. Catechins, polyphenolic compounds in green tea, are gathering much attention due to their potential antitumor effects. So far (-)-epigallocatechin-3-gallate (EGCG), the most abundant component of catechin, has been shown to cause typical apoptosis in several tumor cell lines in most cases through activation of caspases. In this study, we showed that EGCG predominantly caused necrosis-like cell death via a caspase-independent mechanism in CML cells, K562 and C2F8, whereas imatinib induced the typical apoptotic cell death. Moreover, this caspase-independent cell death partially mediated the release of apoptosis-inducing factor, AIF, and serine protease, HtrA2/Omi, from the mitochondria to cytosol. In addition, EGCG enhanced the imatinib-induced cell death (P < 0.01) resulting in additive cell death in K562 cells and EGCG alone, effectively reduced the viability of imatinib-resistant K562 cells (P < 0.01). Catechin is a possible candidate for an antitumor agent that causes cell death in CML cells via a caspase-independent mechanism.
Collapse
Affiliation(s)
- Reo Iwasaki
- Laboratory of Tumor Cell Biology, Department of Medical Genome Sciences, Graduate School of Frontier Sciences, University of Tokyo, 4-6-1 Shiroganedai, Minato-ku, Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
10
|
Polycyclic aromatic hydrocarbon components contribute to the mitochondria-antiapoptotic effect of fine particulate matter on human bronchial epithelial cells via the aryl hydrocarbon receptor. Part Fibre Toxicol 2010; 7:18. [PMID: 20663163 PMCID: PMC2914693 DOI: 10.1186/1743-8977-7-18] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 07/21/2010] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Nowadays, effects of fine particulate matter (PM2.5) are well-documented and related to oxidative stress and pro-inflammatory response. Nevertheless, epidemiological studies show that PM2.5 exposure is correlated with an increase of pulmonary cancers and the remodeling of the airway epithelium involving the regulation of cell death processes. Here, we investigated the components of Parisian PM2.5 involved in either the induction or the inhibition of cell death quantified by different parameters of apoptosis and delineated the mechanism underlying this effect. RESULTS In this study, we showed that low levels of Parisian PM2.5 are not cytotoxic for three different cell lines and primary cultures of human bronchial epithelial cells. Conversely, a 4 hour-pretreatment with PM2.5 prevent mitochondria-driven apoptosis triggered by broad spectrum inducers (A23187, staurosporine and oligomycin) by reducing the mitochondrial transmembrane potential loss, the subsequent ROS production, phosphatidylserine externalization, plasma membrane permeabilization and typical morphological outcomes (cell size decrease, massive chromatin and nuclear condensation, formation of apoptotic bodies). The use of recombinant EGF and specific inhibitor led us to rule out the involvement of the classical EGFR signaling pathway as well as the proinflammatory cytokines secretion. Experiments performed with different compounds of PM2.5 suggest that endotoxins as well as carbon black do not participate to the antiapoptotic effect of PM2.5. Instead, the water-soluble fraction, washed particles and organic compounds such as polycyclic aromatic hydrocarbons (PAH) could mimic this antiapoptotic activity. Finally, the activation or silencing of the aryl hydrocarbon receptor (AhR) showed that it is involved into the molecular mechanism of the antiapoptotic effect of PM2.5 at the mitochondrial checkpoint of apoptosis. CONCLUSIONS The PM2.5-antiapoptotic effect in addition to the well-documented inflammatory response might explain the maintenance of a prolonged inflammation state induced after pollution exposure and might delay repair processes of injured tissues.
Collapse
|
11
|
Deng JY, Chen SJ, Jow GM, Hsueh CW, Jeng CJ. Dehydroeburicoic Acid Induces Calcium- and Calpain-Dependent Necrosis in Human U87MG Glioblastomas. Chem Res Toxicol 2009; 22:1817-26. [DOI: 10.1021/tx9002275] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jhu-Yun Deng
- Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, No. 155, Section 2, Li-Non Street, Taipei 12212, Taiwan, School of Medicine, Fu-Jen Catholic University, Hsin-Chuang, Taipei County 24205, Taiwan, and Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, No. 2, Chung Cheng First Road, Lingya District, Kaohsiun, 80284, Taiwan
| | - Sian-Jin Chen
- Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, No. 155, Section 2, Li-Non Street, Taipei 12212, Taiwan, School of Medicine, Fu-Jen Catholic University, Hsin-Chuang, Taipei County 24205, Taiwan, and Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, No. 2, Chung Cheng First Road, Lingya District, Kaohsiun, 80284, Taiwan
| | - Guey-Mei Jow
- Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, No. 155, Section 2, Li-Non Street, Taipei 12212, Taiwan, School of Medicine, Fu-Jen Catholic University, Hsin-Chuang, Taipei County 24205, Taiwan, and Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, No. 2, Chung Cheng First Road, Lingya District, Kaohsiun, 80284, Taiwan
| | - Chao-Wen Hsueh
- Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, No. 155, Section 2, Li-Non Street, Taipei 12212, Taiwan, School of Medicine, Fu-Jen Catholic University, Hsin-Chuang, Taipei County 24205, Taiwan, and Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, No. 2, Chung Cheng First Road, Lingya District, Kaohsiun, 80284, Taiwan
| | - Chung-Jiuan Jeng
- Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, No. 155, Section 2, Li-Non Street, Taipei 12212, Taiwan, School of Medicine, Fu-Jen Catholic University, Hsin-Chuang, Taipei County 24205, Taiwan, and Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, No. 2, Chung Cheng First Road, Lingya District, Kaohsiun, 80284, Taiwan
| |
Collapse
|
12
|
Watanabe M, Adachi S, Matsubara H, Imai T, Yui Y, Mizushima Y, Hiraumi Y, Watanabe KI, Kamitsuji Y, Toyokuni SY, Hosoi H, Sugimoto T, Toguchida J, Nakahata T. Induction of autophagy in malignant rhabdoid tumor cells by the histone deacetylase inhibitor FK228 through AIF translocation. Int J Cancer 2009; 124:55-67. [PMID: 18821579 DOI: 10.1002/ijc.23897] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Malignant rhabdoid tumors (MRT) exhibit a very poor prognosis because of their resistance to chemotherapeutic agents and new therapies are needed for the treatment of this cancer. Here, we show that the histone deacetylase (HDAC) inhibitor FK228 (depsipeptide) has an antitumor effect on MRT cells both in vitro and in vivo. FK228 is a unique cyclic peptide and is among the most potent inhibitors of both Class I and Class II HDACs. FK228 inhibited proliferation and induced apoptosis in all MRT cell lines tested. Preincubation with the pancaspase inhibitor zVAD-fmk did not completely rescue FK228-induced cell death, although it did inhibit apoptosis. Transmission electron microscopy (TEM) showed that FK228 could stimulate MRT cells to undergo apoptosis, necrosis or autophagy. FK228 converted unconjugated microtubule-associated protein light chain 3 (LC3-I) to conjugated light chain 3 (LC3-II) and induced localization of LC3 to autophagosomes. Apoptosis inducing factor (AIF), which plays a role in caspase-independent cell death, translocated to the nucleus in response to FK228 treatment. Moreover, small interfering RNA (siRNA) targeting of AIF prevented the morphological changes associated with autophagy and redistribution of LC3 to autophagosomes. Disrupting autophagy with chloroquine treatment enhanced FK228-induced cell death. In vivo, FK228 caused a reduction in tumor size and induced autophagy in tumor tissues. Using immunoelectron microscopy, we confirmed AIF translocation into the nucleus of FK228-induced autophagic cells in vivo. Thus, FK228 is a novel candidate for an antitumor agent for MRT cells.
Collapse
Affiliation(s)
- Motonobu Watanabe
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Role of intracellular calcium and S-glutathionylation in cell death induced by a mixture of isothiazolinones in HL60 cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1793:572-83. [PMID: 19118583 DOI: 10.1016/j.bbamcr.2008.11.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2008] [Revised: 11/25/2008] [Accepted: 11/26/2008] [Indexed: 12/17/2022]
Abstract
Previously we reported that brief exposure of HL60 cells to a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one (CMI) and 2-methyl-4-isothiazolin-3-one (MI) shifts the cells into a state of oxidative stress that induces apoptosis and necrosis. In this study, flow cytometric analysis showed that CMI/MI induces early perturbation of calcium homeostasis, increasing cytosolic and mitochondrial calcium and depleting the intracellular endoplasmic reticulum (ER) stores. The calcium chelator BAPTA-AM reduced necrosis and secondary necrosis, the loss of DeltaPsim and S-glutathionylation induced by necrotic doses of CMI/MI, but did not protect against CMI/MI-induced apoptosis, mitochondrial calcium uptake and mitochondrial hyperpolarization. This indicates that increased cytoplasmic calcium does not have a causal role in the induction of apoptosis, while cross-talk between the ER and mitochondria could be responsible for the induction of apoptosis. GSH-OEt pretreatment, which enhances cellular GSH content, reduced S-glutathionylation and cytosolic and mitochondrial calcium levels, thus protecting against both apoptosis and necrosis shifting to apoptosis. Therefore, the degree of GSH depletion, paralleled by the levels of protein S-glutathionylation, may have a causal role in increasing calcium levels. The mitochondrial calcium increase could be responsible for apoptosis, while necrosis is associated with cytoplasmic calcium overload. These findings suggest that S-glutathionylation of specific proteins acts as a molecular linker between calcium and redox signalling.
Collapse
|
14
|
Lin T, Yang MS. Benzo[a]pyrene-induced necrosis in the HepG(2) cells via PARP-1 activation and NAD(+) depletion. Toxicology 2007; 245:147-53. [PMID: 18243466 DOI: 10.1016/j.tox.2007.12.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Revised: 11/28/2007] [Accepted: 12/20/2007] [Indexed: 10/22/2022]
Abstract
Benzo[a]pyrene (BaP), a member of polycyclic aromatic hydrocarbons (PAH), has been reported to induce cell death in various cell types. However, the underlying mechanisms are controversial. In the present study, we report that BaP induces necrotic cell death in human hepatoma (HepG(2)) cells. The process is dependent on the activation of poly(ADP-ribose)polymerase-1 (PARP-1), a nuclear enzyme responsible for repairing DNA damage. Once activated, PARP-1 catalyzes the formation of ADP-ribose polymers on acceptor proteins at the expense of NAD(+). Incubation of cells with high extracellular concentration of NAD(+) (5mM) after BaP treatment caused an elevation in intracellular NAD(+) level and blocked cell death. Inhibitor of PARP-1 suppressed both overactivation of PARP-1 activity and NAD(+) depletion. Moreover, addition of pyruvate (5mM), but not glutamate (5mM) or glutamine (5mM), could restore ATP production and prevent cell death. These results elucidated a sequence of events linking cellular metabolism to the progression of cell death induced by this organic toxicant.
Collapse
Affiliation(s)
- T Lin
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, PR China
| | | |
Collapse
|
15
|
Arcila ML, Sánchez MD, Ortiz B, Barrera LF, García LF, Rojas M. Activation of apoptosis, but not necrosis, during Mycobacterium tuberculosis infection correlated with decreased bacterial growth: role of TNF-alpha, IL-10, caspases and phospholipase A2. Cell Immunol 2007; 249:80-93. [PMID: 18160064 DOI: 10.1016/j.cellimm.2007.11.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 11/14/2007] [Accepted: 11/15/2007] [Indexed: 11/16/2022]
Abstract
Monocyte/macrophage cell death is an important event during mycobacterial infection. To get insights about the influence of mononuclear phagocyte maturation in this event we compared the response to Mycobacterium tuberculosis (Mtb) infection of fresh isolated monocytes and monocyte-derived macrophages (MDM) from healthy tuberculin positive individuals. Both monocytes and MDM underwent apoptosis, however, there was a higher numbers of apoptotic macrophages with active Caspases 8 and 9. We also compared Mtb-induced cell death in U937 pro-monocytes and PMA-differentiated cells (U937D). In response to Mtb infection, U937D cells underwent apoptosis and promonocytes both apoptosis and necrosis. There were high number of U937D cells producing TNF-alpha and high number of IL-10+ promonocytes. These evidences suggest that U937 could be a valid model to study the mechanisms that rule Mtb-induced cell death. Experiments with the cell line and fresh isolated mononuclear cells with pharmacological inhibitors showed that induction of necrosis involved calcium and cAMP signals resulting in IL-10 production. Necrosis also correlated with Caspase 3, PLA2 activity and bacterial growth. In U937D cells and monocytes from healthy donors there was activation of calcium, TNF-alpha and Caspase 8 activation and decreased bacterial load. Understanding the mechanisms that control the dichotomy events between apoptosis and necrosis/oncosis associated with cell maturity might open new strategies to better control the course of mycobacterial infections.
Collapse
Affiliation(s)
- Mary Luz Arcila
- Grupo de Inmunología Celular e Inmunogenética, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | | | | | | | | | | |
Collapse
|
16
|
Leaver HA, Schou AC, Rizzo MT, Prowse CV. Calcium-sensitive mitochondrial membrane potential in human platelets and intrinsic signals of cell death. Platelets 2006; 17:368-77. [PMID: 16973497 DOI: 10.1080/09537100600757216] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The mechanisms involved in storage-induced damage in platelets are not well understood, but membrane signalling via Ca2+ ion flux may affect mitochondrial H+ gradients and metabolism and the intrinsic pathways of cell death, platelet survival and function. In this study, the effects of blood bank storage conditions, including reduced plasma concentration and interrupted agitation, were evaluated in platelets from 136 healthy donors. Mitochondrial membrane potential (DeltaPsim), an indicator of intrinsic cell death, and its sensitivity to Ca2+ ionophore A23187, were monitored using JC-1 by flow cytometry and fluorescence microscopy. Platelet survival was examined using lactate dehydrogenase release, annexin V binding and caspase-3/7 activity. Decreased plasma concentration and interrupted agitation affected DeltaPsim and caspase-3/7. Over 7 days in 30% plasma DeltaPsim showed a significant reduction (86.3 +/- 1.1% platelets with polarised mitochondria day 1; 79.9 +/- 2.1% day 5; 75.1 +/- 3.8% day 7, P = 0.01 day 1 vs. day 7). Whilst DeltaPsim in agitated platelets in 100% plasma was unchanged up to day 7, interruption of agitation was associated with a 44% reduction in the proportion of platelets with polarised mitochondria after 5 days (56 +/- 11%). The Ca2+ sensitivity of DeltaPsim changed earlier: 5 microM A23187 caused a 20-30% change in the fraction of platelets with polarised mitochondria by day 5. Ca2+ sensitivity also increased during interrupted agitation and reduced plasma concentration. DeltaPsim also correlated with indicators of platelet death, caspase-3 activity and annexin V binding (correlation coefficients of 0.8). In conclusion, changes in Ca2+-sensitive DeltaPsim are involved in the initiation of storage-induced cell death signals that influence platelet count and function in vivo.
Collapse
Affiliation(s)
- H A Leaver
- Research & Development Section, Scottish National Blood Transfusion Service, Ellen's Glen Road, Edinburgh EH17 7QT, UK.
| | | | | | | |
Collapse
|
17
|
Henriksson CE, Klingenberg O, Hellum M, Landsverk KS, Joø GB, Westvik AB, Kierulf P. Calcium ionophore-induced de-encryption of tissue factor in monocytes is associated with extensive cell death. Thromb Res 2006; 119:621-30. [PMID: 16844202 DOI: 10.1016/j.thromres.2006.05.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2005] [Revised: 05/05/2006] [Accepted: 05/08/2006] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Cell surface tissue factor (TF) is normally encrypted, but can be activated by various cellular perturbations. Exposure of TF bearing cells to calcium ionophore has been reported to increase TF activity, de-encrypt TF, by phosphatidylserine (PS)-dependent and -independent mechanisms. Our aim has been to examine at the single cell level, if increased cell surface PS coincided with increased cell surface TF antigen, and cell death (necrosis, 7-AAD-intercalation), and relate this to monocyte- and microparticle (MP)-associated procoagulant activity. MATERIALS AND METHODS We exposed lipopolysaccharide-stimulated, human, elutriation-purified, cryopreserved TF bearing monocytes to increasing concentrations of calcium ionophore (A23187) and measured procoagulant activity in cells and supernatants. These measurements were compared with quantification of cell surface TF and PS (Annexin V) and of cell necrosis (7-AAD) by flow cytometry, and complemented by confocal microscopy. RESULTS We observed that calcium ionophore increased cellular and MP-associated TF activity, but not cell surface TF antigen. The discrepancy between TF activity and TF antigen coincided with a dose-dependent increase in the number of cells expressing PS. These cells were to a large extent necrotic and many of them also expressed TF. CONCLUSIONS We suggest such TF positive dying cells to contribute to the discordance between TF activity and TF expression. Calcium ionophore also increased MP-associated TF activity and release of MPs may be a way to disseminate procoagulant activity. Our findings emphasize the importance of adequately assessing cell death and taking into consideration its possible role in experiments with calcium ionophore.
Collapse
Affiliation(s)
- C E Henriksson
- The R&D Group, Department of Clinical Chemistry, Ullevaal University Hospital, Oslo, Norway.
| | | | | | | | | | | | | |
Collapse
|