1
|
Zhang Q, Dang YY, Luo X, Fu JJ, Zou ZC, Jia XJ, Zheng GD, Li CW. Kazinol B protects H9c2 cardiomyocytes from hypoxia/reoxygenation-induced cardiac injury by modulating the AKT/AMPK/Nrf2 signalling pathway. PHARMACEUTICAL BIOLOGY 2023; 61:362-371. [PMID: 36740871 PMCID: PMC9904293 DOI: 10.1080/13880209.2023.2173247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/07/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
CONTEXT Kazinol B (KB), an isoprenylated flavan derived from Broussonetia kazinoki Sieb. (Moraceae) root, has long been used in folk medicine. OBJECTIVE This study examines the protective effects of KB and its underlying mechanisms in hypoxia and reoxygenation (H/R)-induced cardiac injury in H9c2 rat cardiac myoblasts. MATERIALS AND METHODS H9c2 cells were incubated with various concentrations of KB (0, 0.3, 1, 3, 10 and 30 μM) for 2 h and then subjected to H/R insults. The protective effects of KB and its underlying mechanisms were explored. RESULTS KB significantly elevated cell viability (1 μM, 1.21-fold; 3 μM, 1.36-fold, and 10 μM, 1.47-fold) and suppressed LDH release (1 μM, 0.77-fold; 3 μM, 0.68-fold, and 10 μM, 0.59-fold) in H/R-induced H9c2 cells. Further, 10 μM KB blocked apoptotic cascades, as shown by the Annexin-V/PI (0.41-fold), DNA fragmentation (0.51-fold), caspase-3 (0.52-fold), PARP activation (0.27-fold) and Bax/Bcl-2 expression (0.28-fold) assays. KB (10 μM) downregulated reactive oxygen species production (0.51-fold) and lipid peroxidation (0.48-fold); it upregulated the activities of GSH-Px (2.08-fold) and SOD (1.72-fold). KB (10 μM) induced Nrf2 nuclear accumulation (1.94-fold) and increased ARE promoter activity (2.15-fold), HO-1 expression (3.07-fold), AKT (3.07-fold) and AMPK (3.07-fold) phosphorylation. Nrf2 knockdown via using Nrf2 siRNA abrogated KB-mediated protective effects against H/R insults. Moreover, pharmacological inhibitors of AKT and AMPK also abrogated KB-induced Nrf2 activation and its protective function. DISCUSSION AND CONCLUSIONS KB prevented H/R-induced cardiomyocyte injury via modulating the AKT and AMPK-mediated Nrf2 induction. KB might be a promising drug candidate for managing ischemic cardiac disorders.
Collapse
Affiliation(s)
- Qian Zhang
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Yuan-Ye Dang
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Xiu Luo
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Ji-Jun Fu
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Zhi-Cong Zou
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Xue-Jing Jia
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, China
| | - Guo-Dong Zheng
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Chu-Wen Li
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, China
| |
Collapse
|
2
|
Shi Y, Zhong L, Fan Y, Zhang J, Dai J, Zhong H, Fu G, Hu Y. Taurine inhibits hydrogen peroxide-induced oxidative stress, inflammatory response and apoptosis in liver of Monopterus albus. FISH & SHELLFISH IMMUNOLOGY 2022; 128:536-546. [PMID: 35988713 DOI: 10.1016/j.fsi.2022.08.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/05/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
Fish are extremely vulnerable to environmental stimulation and produce oxidative stress. Among them, hydrogen peroxide is an oxidative stress source that cannot be ignored in fish, which can cause physical disorders, inflammation and even death. Taurine was revealed to reduce oxidative damage and inflammation caused by toxic substances, but whether it can reduce toxicity of rice field eel caused by H2O2 has not been determined. Thus, the intervention effects of taurine on H2O2-induced oxidative stress, inflammation, apoptosis, and autophagy in rice field eel. The results showed that oxidative injury in the liver was determined after H2O2 injection, as indicated by enhanced serum AST and ALT activities, inhibited the antioxidant function (increased MDA and ROS contents, decreased antioxidant enzymes, inhibited nrf2 transcription level), and induced inflammatory response (upregulated il-1β, il-6, il-8, and il-12β gene expression, downregulated tgf-β1 gene expression, activated the transcription level of nf-κb, tlr-3, and tlr-7). In addition, bax, caspase3, beclin1, and Lc3B gene expression were significantly upregulated after H2O2 injection, while bcl2 and p62 gene expression were downregulated, leading to the occurrence of apoptosis and autophagy. In contrast, adding 0.2 and 0.5% taurine to feed significantly alleviated this damage, as indicated by the recovery of the aforementioned bioindicators, and the effect of 0.5% taurine addition is better than 0.2%. Overall, these results suggested that taurine can relieve the liver toxicity induced by H2O2, which enriched the toxic mechanism of H2O2 on fish and provided evidence for the protective effect of taurine on liver.
Collapse
Affiliation(s)
- Yong Shi
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Lei Zhong
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China; Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
| | - Yuding Fan
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Junzhi Zhang
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Jihong Dai
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Huan Zhong
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Guihong Fu
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Yi Hu
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China; Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China.
| |
Collapse
|
3
|
Anti-Ischemic Effects of PIK3IP1 Are Mediated through Its Interactions with the ETA-PI3Kγ-AKT Axis. Cells 2022; 11:cells11142162. [PMID: 35883611 PMCID: PMC9322903 DOI: 10.3390/cells11142162] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/27/2022] [Accepted: 07/07/2022] [Indexed: 12/10/2022] Open
Abstract
Oxidative stress, caused by the accumulation of reactive oxygen species (ROS) during acute myocardial infarction (AMI), is one of the main factors leading to myocardial cell damage and programmed cell death. Phosphatidylinositol-3-kinase-AKT (PI3K-AKT) signaling is essential for regulating cell proliferation, differentiation, and apoptosis. Phosphoinositide-3-kinase (PI3K)-interacting protein 1 (PIK3IP1) is an intrinsic inhibitor of PI3K in various tissues, but its functional role during AMI remains unknown. In this study, the anti-ischemic role of PIK3IP1 in an in vitro AMI setting was evaluated using H9c2 cells. The MTT assay demonstrated that cell viability decreased significantly via treatment with H2O2 (200–500 μM). The TUNEL assay results revealed substantial cellular apoptosis following treatment with 200 μM H2O2. Under the same conditions, the expression levels of hypoxia-inducible factor (HIF-1α), endothelin-1 (ET-1), bcl-2-like protein 4 (BAX), and cleaved caspase-3 were elevated, whereas those of PIK3IP1, LC3II, p53, and Bcl-2 decreased significantly. PIK3IP1 overexpression inhibited H2O2-induced and PI3K-mediated apoptosis; however, PIK3IP1 knockdown reversed this effect, suggesting that PIK3IP1 functions as an anti-apoptotic molecule. To identify both the upstream and downstream molecules associated with PIK3IP1, ET-1 receptor type-specific antagonists (BQ-123 and BQ-788) and PI3K subtype-specific antagonists (LY294002 and IPI-549) were used to determine the participating isoforms. Co-immunoprecipitation was performed to identify the binding partners of PIK3IP1. Our results demonstrated that ROS-induced cardiac cell death may occur through the ETA-PI3Kγ-AKT axis, and that PIK3IP1 inhibits binding with both ETA and PI3Kγ. Taken together, these findings reveal that PIK3IP1 plays an anti-ischemic role by reducing the likelihood of programmed cell death via interaction with the ETA-PI3Kr-AKT axis.
Collapse
|
4
|
Shi Y, Zhong L, Chen K, Fan Y, Xie K, Zhang J, Dai J, Hu Y. Sanguinarine attenuates hydrogen peroxide-induced toxicity in liver of Monopterus albus: Role of oxidative stress, inflammation and apoptosis. FISH & SHELLFISH IMMUNOLOGY 2022; 125:190-199. [PMID: 35569777 DOI: 10.1016/j.fsi.2022.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/05/2022] [Accepted: 05/08/2022] [Indexed: 06/15/2023]
Abstract
In aquatic animals, hydrogen peroxide (H2O2), which is a source of oxidative stress, can cause physiological dysfunction, inflammation, and death. Sanguinarine (SAN) is a plant extract known to improve antioxidant and immune capacity. However, the roles of SAN in H2O2-induced liver tissue toxicity is unclear. The effects on hepatic oxidative damage, inflammatory response, and apoptosis were investigated by feeding rice field eel with 0, 375, and 750 μg/kg of SAN for eight weeks and then intraperitoneally injected with H2O2. The results showed that after 24 h of H2O2 injection, the activities of ALT and AST in serum were significantly increased, oxidative damage and inflammatory response occurred in the liver, and apoptosis was induced, which indicated that H2O2 induced liver damage in rice field eel. However, dietary supplemented with 375 or 750 μg/kg SAN significantly decreased the activities of ALT and AST in serum, and significantly increased the antioxidant function (decreased ROS, MDA, and antioxidant enzymes levels, downregulated antioxidant-related gene expression, and inhibited the transcription level of nrf2). The addition of SAN at 375 or 750 μg/kg ameliorated H2O2-induced inflammatory response of liver (upregulated tgf-β1 mRNA expression, downregulated il-1β, il-6, il-8, and il-12β mRNA expression, and inhibited the transcription levels of tlr-3 tlr-7, and nf-κb). In addition, dietary supplemented with 375 or 750 μg/kg SAN alleviated the apoptosis of liver induced by H2O2 (downregulated bax mRNA expression, upregulated caspase3 mRNA expression, and reduced the number of apoptotic cells by TUNEL staining). Overall, these results suggested that SAN could alleviate the liver injury in rice field eel induced by H2O2, mainly by improving antioxidant capacity, alleviating inflammatory response and inhibiting apoptosis, and the effect of 750 μg/kg SAN addition is better than 375 μg/kg.
Collapse
Affiliation(s)
- Yong Shi
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Lei Zhong
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China; Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
| | - Kaijian Chen
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China; Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China
| | - Yuding Fan
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Kai Xie
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Junzhi Zhang
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Jihong Dai
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China
| | - Yi Hu
- Hunan Research Center of Engineering Technology for Utilization of Distinctive Aquatic Resource, Hunan Agricultural University, Changsha, 410128, China; Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, China.
| |
Collapse
|
5
|
Antiproliferative and Proapoptotic Effects of Phenanthrene Derivatives Isolated from Bletilla striata on A549 Lung Cancer Cells. Molecules 2022; 27:molecules27113519. [PMID: 35684456 PMCID: PMC9181924 DOI: 10.3390/molecules27113519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/26/2022] [Accepted: 05/26/2022] [Indexed: 12/04/2022] Open
Abstract
Lung cancer continues to be the world’s leading cause of cancer death and the treatment of non-small cell lung cancer (NSCLC) has attracted much attention. The tubers of Bletilla striata are regarded as “an excellent medicine for lung diseases” and as the first choice to treat several lung diseases. In this study, seventeen phenanthrene derivatives, including two new compounds (1 and 2), were isolated from the tubers of B. striata. Most compounds showed cytotoxicity against A549 cells. An EdU proliferation assay, a cell cycle assay, a wound healing assay, a transwell migration assay, a flow cytometry assay, and a western blot assay were performed to further investigate the effect of compound 1 on A549 cells. The results showed that compound 1 inhibited cell proliferation and migration and promoted cell apoptosis in A549 cells. The mechanisms might correlate with the regulation of the Akt, MEK/ERK, and Bcl-2/Bax signaling pathways. These results suggested that the phenanthrenes of B. striata might be important and effective substances in the treatment of NSCLC.
Collapse
|
6
|
Ueda N. A Rheostat of Ceramide and Sphingosine-1-Phosphate as a Determinant of Oxidative Stress-Mediated Kidney Injury. Int J Mol Sci 2022; 23:ijms23074010. [PMID: 35409370 PMCID: PMC9000186 DOI: 10.3390/ijms23074010] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/29/2022] [Accepted: 03/29/2022] [Indexed: 02/06/2023] Open
Abstract
Reactive oxygen species (ROS) modulate sphingolipid metabolism, including enzymes that generate ceramide and sphingosine-1-phosphate (S1P), and a ROS-antioxidant rheostat determines the metabolism of ceramide-S1P. ROS induce ceramide production by activating ceramide-producing enzymes, leading to apoptosis, while they inhibit S1P production, which promotes survival by suppressing sphingosine kinases (SphKs). A ceramide-S1P rheostat regulates ROS-induced mitochondrial dysfunction, apoptotic/anti-apoptotic Bcl-2 family proteins and signaling pathways, leading to apoptosis, survival, cell proliferation, inflammation and fibrosis in the kidney. Ceramide inhibits the mitochondrial respiration chain and induces ceramide channel formation and the closure of voltage-dependent anion channels, leading to mitochondrial dysfunction, altered Bcl-2 family protein expression, ROS generation and disturbed calcium homeostasis. This activates ceramide-induced signaling pathways, leading to apoptosis. These events are mitigated by S1P/S1P receptors (S1PRs) that restore mitochondrial function and activate signaling pathways. SphK1 promotes survival and cell proliferation and inhibits inflammation, while SphK2 has the opposite effect. However, both SphK1 and SphK2 promote fibrosis. Thus, a ceramide-SphKs/S1P rheostat modulates oxidant-induced kidney injury by affecting mitochondrial function, ROS production, Bcl-2 family proteins, calcium homeostasis and their downstream signaling pathways. This review will summarize the current evidence for a role of interaction between ROS-antioxidants and ceramide-SphKs/S1P and of a ceramide-SphKs/S1P rheostat in the regulation of oxidative stress-mediated kidney diseases.
Collapse
Affiliation(s)
- Norishi Ueda
- Department of Pediatrics, Public Central Hospital of Matto Ishikawa, 3-8 Kuramitsu, Hakusan 924-8588, Japan
| |
Collapse
|
7
|
Zhou F, Dai O, Peng C, Xiong L, Ao H, Liu F, Zhou QM. Pro-Angiogenic Effects of Essential Oil from Perilla frutescens and Its Main Component (Perillaldehyde) on Zebrafish Embryos and Human Umbilical Vein Endothelial Cells. Drug Des Devel Ther 2021; 15:4985-4999. [PMID: 34924753 PMCID: PMC8674578 DOI: 10.2147/dddt.s336826] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/03/2021] [Indexed: 12/14/2022] Open
Abstract
Purpose Perilla frutescens (L.) Britt., a traditional edible-medicinal herb in China, has been used to treat cardiovascular and cerebrovascular (cardio-cerebrovascular) diseases for thousands of years. However, knowledge of the mechanisms underlying the effects of essential oil from P. frutescens (EOPF) in the treatment of cardio-cerebrovascular diseases is lacking. The promotion of angiogenesis is beneficial in the treatment of ischemic cardio-cerebrovascular diseases. The current study investigated the pro-angiogenic role of EOPF and its main component perillaldehyde in sunitinib-injured transgenic Tg (flk1:EGFP) zebrafish embryos and human umbilical vein endothelial cells (HUVECs) for the first time. Materials and Methods The pro-angiogenic effects of EOPF and perillaldehyde were observed in vivo using transgenic Tg (flk1:EGFP) zebrafish embryos and in vitro using HUVECs. Cell viability, proliferation, migration, tube formation, and protein levels were detected by MTT, EdU staining, wound healing, transwell chamber, and Western blot assays, respectively. Results EOPF and perillaldehyde exerted a significant stimulatory effect on the formation of zebrafish intersegmental vessels (ISVs). Moreover, EOPF and perillaldehyde promoted proliferation, migration, and tube formation in sunitinib-treated HUVECs. Additionally, our findings uncovered that the pro-angiogenic effects of EOPF and perillaldehyde were mediated by increases in the expression ratios of p-ERK1/2 to ERK1/2 and Bcl-2 to Bax. Conclusion The present study is the first report to provide clear evidence that EOPF and perillaldehyde promote angiogenesis by stimulating repair of sunitinib-injured ISVs in zebrafish embryos and promoting proliferation, migration, and tube formation in sunitinib-injured HUVECs. The underlying mechanisms are related to increased p-ERK1/2 to ERK1/2 and Bcl-2 to Bax expression ratios. EOPF and perillaldehyde may be used in the treatment of cardio-cerebrovascular diseases, which is consistent with the traditional application of P. frutescens.
Collapse
Affiliation(s)
- Fei Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Ou Dai
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Liang Xiong
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,Institute of Innovative Medicine Ingredients of Southwest Specialty Medicinal Materials, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Hui Ao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Fei Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,Institute of Innovative Medicine Ingredients of Southwest Specialty Medicinal Materials, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| | - Qin-Mei Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,Institute of Innovative Medicine Ingredients of Southwest Specialty Medicinal Materials, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China.,Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, People's Republic of China
| |
Collapse
|
8
|
Qin D, Yang F, Hu Z, Liu J, Wu Q, Luo Y, Yang L, Han S, Luo F. Peptide T8 isolated from yak milk residue ameliorates H2O2-induced oxidative stress through Nrf2 signaling pathway in HUVEC cells. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101408] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
9
|
Exhaled breath condensates from healthy children induce cell death of in vitro cultured cells by activation of apoptosis. Postepy Dermatol Alergol 2021; 38:85-90. [PMID: 34408572 PMCID: PMC8362770 DOI: 10.5114/ada.2019.87087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 07/15/2019] [Indexed: 11/20/2022] Open
Abstract
Introduction Exhaled breath condensate (EBC) is a liquefied air, containing a mixture of non-volatile compounds, reflecting pathophysiological status of the bronchopulmonary system. Therefore, EBC analysis may be useful in diagnostics and monitoring of various respiratory diseases. In previous studies it was found that EBC from asthmatic children contained several regulators of angiogenesis. In vitro experiments with EBCs from children with asthma revealed their weak influence on proliferation of various cells. Surprisingly, EBCs from healthy children led to apoptosis of all tested cells. Aim To assess the expression of selected apoptosis-related proteins in human and murine cells exposed to EBC from healthy children. Material and methods EBCs from healthy children were added to cultures of murine endothelial cells (C166) or human lung fibroblasts (HLF) to induce their apoptosis. For proteome analysis the apoptosis pathway-specific protein microarrays were used. Results The homogenates from EBC-treated C166 cells contained low amounts of Hsp27, which correlated with their fast death. Contrary to C166, the lysates from EBC-treated fibroblasts displayed increased amounts of Hsp27, which correlated with delayed HLF response to the induction of apoptosis. Except for increased caspase-3 in EBC-treated HLF, none of the other apoptosis regulators revealed any significant changes in that analysis. Conclusions The screening of apoptosis pathways with microarray technology allowed identification of two molecules, Hsp27 and caspase-3, involved in cellular response to EBC. However, the factor responsible for induction of the cytotoxic effect of EBC from healthy children still remains unknown.
Collapse
|
10
|
Zhou F, Liu F, Liu J, He YL, Zhou QM, Guo L, Peng C, Xiong L. Stachydrine promotes angiogenesis by regulating the VEGFR2/MEK/ERK and mitochondrial-mediated apoptosis signaling pathways in human umbilical vein endothelial cells. Biomed Pharmacother 2020; 131:110724. [DOI: 10.1016/j.biopha.2020.110724] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/28/2020] [Accepted: 09/02/2020] [Indexed: 12/14/2022] Open
|
11
|
Zhang J, Li W, Yuan Q, Zhou J, Zhang J, Cao Y, Fu G, Hu W. Transcriptome Analyses of the Anti-Proliferative Effects of 20(S)-Ginsenoside Rh2 on HepG2 Cells. Front Pharmacol 2019; 10:1331. [PMID: 31780945 PMCID: PMC6855211 DOI: 10.3389/fphar.2019.01331] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 10/18/2019] [Indexed: 12/21/2022] Open
Abstract
20(S)-ginsenoside Rh2 (Rh2), a well-known protopanaxadiol-type ginsenoside from Panax ginseng has especially gained attention for its anticancer activities on various types of human cancer cells. However, the molecular mechanism through which Rh2 promotes apoptosis in hepatocellular carcinoma (HePG2) cells is not known at the transcriptome level. Rh2 can specifically inhibit the proliferation of HePG2 in a dose- and time-dependent manner. Moreover, Rh2 can significantly increase the apoptosis which was related with an increase in protein expression levels of caspase-3, caspase-6, and poly (ADP-ribose) polymerase. Comparison of RNA-seq transcriptome profiles from control group and Rh2-treated group yielded a list of 2116 genes whose expression was significantly affected, which includes 971 up-regulated genes and 1145 down-regulated genes. The differentially expressed genes in p53 signaling pathway and DNA replication may have closely relationships to the cells apoptosis caused by Rh2 treatment. The results of qPCR validation showed that dynamic changes in mRNA, such as CDKN1A, CCND2, PMAIP1, GTSE1, and TP73.
Collapse
Affiliation(s)
- Ji Zhang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| | - Weibo Li
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| | - Qiaoyun Yuan
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| | - Jing Zhou
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| | - Jianmei Zhang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| | - Yufeng Cao
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| | - Guangbo Fu
- Department of Urology, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Weicheng Hu
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, China
| |
Collapse
|
12
|
Protective effect of Ziziphora clinopodioides flavonoids against H 2O 2-induced oxidative stress in HUVEC cells. Biomed Pharmacother 2019; 117:109156. [PMID: 31387192 DOI: 10.1016/j.biopha.2019.109156] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 06/15/2019] [Accepted: 06/19/2019] [Indexed: 02/07/2023] Open
Abstract
The present study was designed to study the protective effect of Ziziphora clinopodioides flavonoids (ZCF) against H2O2-induced oxidative stress in HUVEC cells. MTT assay was carried out to determine the cell viability of HUVEC cells following pretreatment with ZCF. Fluorescent microscopy measurements were performed to evaluate apoptosis of HUVEC cells. Furthermore, the effects of ZCF on the activities of antioxidants superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT), malondialdehyde production (MDA) and lactic dehydrogenase (LDH) levels were analyzed. Apoptosis was observed by Hoechst33258 staining and AO staining. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to detect the expression of B-cell lymphoma/leukemia-2 (Bcl-2), Bcl-2-associated X protein (Bax) and aspartate proteolytic enzyme-3 (Caspase-3) mRNA. The expression of vascular endothelial growth factor receptor 2 (VEGFR2), protein kinase B (Akt), phosphorylated protein kinase B (p-Akt), Bax, Bcl-2 and Caspase-3 were detected by western blot. ZCF attenuated H2O2-induced cell death, as determined by the MTT assay. ZCF decreased malondialdehyde and lactic dehydrogenase levels, increased superoxide dismutase, glutathione peroxidase, catalase activities and inhibited apoptosis. Moreover, pretreatment with ZCF decreased the expression of Bax and Caspase-3 at mRNA level, increased the expression of Bcl-2 mRNA level, decreased the levels of VEGFR2, Bax and Caspase-3 protein, and increased the level of p-Akt / Akt and Bcl-2 protein in HUVEC cells. These results suggested that ZCF protected against H2O2-induced injury in HUVEC cells. The mechanism for this effect is related to the enhancement of antioxidant capacity, suppression of angiogenesis and apoptosis.
Collapse
|
13
|
Lai Y, Deng J, Wang M, Wang M, Zhou L, Meng G, Zhou Z, Wang Y, Guo F, Yin M, Zhou X, Jiang H. Vagus nerve stimulation protects against acute liver injury induced by renal ischemia reperfusion via antioxidant stress and anti-inflammation. Biomed Pharmacother 2019; 117:109062. [PMID: 31177065 DOI: 10.1016/j.biopha.2019.109062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/31/2019] [Accepted: 05/31/2019] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE Renal ischemia reperfusion (I/R) is not an isolated event; however, it results in remote organ dysfunction. Vagus nerve stimulation (VNS) has shown protective effects against renal I/R injury via an anti-inflammatory mechanism. This study aimed to investigate whether VNS could attenuate liver injury induced by renal I/R and identify the underlying mechanisms. METHODS Eighteen healthy male Sprague-Dawley rats (200-250 g) were equally divided into three groups: sham group (sham surgery without I/R or VNS), I/R group (renal I/R) and VNS group (renal I/R plus VNS). The I/R model was established by excising the right kidney and then clamping the left renal pedicle with an occlusive nontraumatic microaneurysm clamp for 45 min followed by a 6-h reperfusion. The rats in the VNS group received spontaneous left cervical VNS with renal ischemia and reperfusion. At the end of the experiment, blood and liver tissues were collected to detect liver function, oxidative stress and inflammatory parameters. Additionally, TUNEL staining, real-time PCR, western blotting and hematoxylin and eosin staining of liver tissues were performed to assess liver injury and the underlying mechanisms. RESULTS Kidney and liver function was severely damaged in the I/R group compared to the sham group. However, VNS significantly protected kidney and liver function. Rats treated with VNS revealed decreases in oxidative enzymes, apoptosis and levels of tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6) in serum and liver compared with rats in the I/R group. Rats in the VNS group also showed increased antioxidant stress responses compared to rats in the I/R group. CONCLUSION VNS exerts protective effects against liver injury from renal I/R via inhibiting oxidative stress and apoptosis, downregulating inflammatory cytokines and enhancing antioxidative capability in the liver, and may become a promising adjuvant therapeutic strategy for treating liver injury induced by acute renal injury.
Collapse
Affiliation(s)
- Yanqiu Lai
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Jielin Deng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Menglong Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Meng Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Liping Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Guannan Meng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Zhen Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Yuhong Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Fuding Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Ming Yin
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China
| | - Xiaoya Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China.
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan, Hubei, China.
| |
Collapse
|
14
|
Wang M, Liu Y, Pan RL, Wang RY, Ding SL, Dong WR, Sun GB, Ye JX, Sun XB. Protective effects of Myrica rubra flavonoids against hypoxia/reoxygenation-induced cardiomyocyte injury via the regulation of the PI3K/Akt/GSK3β pathway. Int J Mol Med 2019; 43:2133-2143. [PMID: 30864694 PMCID: PMC6443338 DOI: 10.3892/ijmm.2019.4131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 03/06/2019] [Indexed: 12/15/2022] Open
Abstract
Myrica rubra is well known for its delicious taste and high nutritional value. The present study investigated the potential protective effects and mechanisms of M. rubra flavonoids (MRF) extract on isoproterenol (ISO)-induced myocardial injury in rats and hypoxia/reoxygenation (H/R) injury in H9c2 cardiomyocytes. An in vivo study revealed that MRF decreased serum cardiac enzyme levels, ameliorated pathological heart alterations and increased the antioxidant potential. The in vitro investigation demonstrated that MRF inhibited cell death, reactive oxygen species (ROS) accumulation, mitochondrial membrane depolarization, apoptosis rate and caspase-3 activation and enhanced the Bcl-2/Bax ratio during H/R injury. These effects were accompanied by the phosphorylation of protein kinase B (Akt) and glycogen synthase kinase (GSK)-3β. Further mechanism studies demonstrated that LY294002, a specific inhibitor of phosphoinositide 3-kinase (PI3K), abolished the MRF-mediated cardioprotection against H/R-induced apoptosis and ROS overproduction. Collectively, these results suggested that MRF exerts cardioprotective effects by attenuating oxidative damage and cardiomyocyte apoptosis most likely via a PI3K/Akt/GSK3β-dependent mechanism.
Collapse
Affiliation(s)
- Min Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| | - Ying Liu
- Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, P.R. China
| | - Rui-Le Pan
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| | - Rui-Ying Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| | - Shi-Lan Ding
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| | - Wan-Rui Dong
- Harbin University of Commerce, Harbin, Heilongjiang 150076, P.R. China
| | - Gui-Bo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| | - Jing-Xue Ye
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| | - Xiao-Bo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, P.R. China
| |
Collapse
|
15
|
Jiao W, Han Q, Xu Y, Jiang H, Xing H, Teng X. Impaired immune function and structural integrity in the gills of common carp (Cyprinus carpio L.) caused by chlorpyrifos exposure: Through oxidative stress and apoptosis. FISH & SHELLFISH IMMUNOLOGY 2019; 86:239-245. [PMID: 30176333 DOI: 10.1016/j.fsi.2018.08.060] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/24/2018] [Accepted: 08/30/2018] [Indexed: 06/08/2023]
Abstract
As one of the mucosal lymphatic tissues, the gill is an important immune organ in fish. Water environmental pollutants enter fish body through the gill. Therefore, the gill is the initial site where pollutants produce toxic effects in water. Chlorpyrifos (CPF), a broad-spectrum organophosphate insecticide, is widely used for agricultural pests and causes river pollution. In the present study, we investigated histopathological effect, oxidative stress indexes (SOD, GSH, T-AOC, and MDA), and apoptosis-related genes (P53, PUMA, Bax, Bcl-2, Apaf-1, Caspase-9, and Caspase-3) in the gills of common carp exposed to CPF. The results indicated that CPF exposure decreased SOD, T-AOC, and GSH; increased MDA; decreased Bcl-2 mRNA expression; and increased P53, PUMA, Bax, Apaf-1, Caspase-9, and Caspase-3 mRNA expressions in common carp gills. Our results proved that CPF exposure caused oxidative stress and apoptosis in common carp gills; CPF exposure destroyed the structural integrity and affected the immune function through oxidative stress and apoptosis in common carp gills. These will provide evidence for the toxic effects of water environmental pollutants on immune function and structural integrity in fish gills.
Collapse
Affiliation(s)
- Wanying Jiao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, PR China
| | - Qi Han
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yanmin Xu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, PR China
| | - Huijie Jiang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, PR China
| | - Houjuan Xing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, PR China.
| |
Collapse
|
16
|
Eraslan E, Tanyeli A, Polat E, Polat E. 8-Br-cADPR, a TRPM2 ion channel antagonist, inhibits renal ischemia-reperfusion injury. J Cell Physiol 2018; 234:4572-4581. [PMID: 30191993 DOI: 10.1002/jcp.27236] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/24/2018] [Indexed: 01/25/2023]
Abstract
The transient receptor potential melastatin-2 (TRPM2) channel belongs to the transient receptor potential channel superfamily and is a cation channel permeable to Na+ and Ca 2+ . The TRPM2 ion channel is expressed in the kidney and can be activated by various molecules such as hydrogen peroxide, calcium, and cyclic adenosine diphosphate (ADP)-ribose (cADPR) that are produced during acute kidney injury. In this study, we investigated the role of 8-bromo-cyclic ADP-ribose (8-Br-cADPR; a cADPR antagonist) in renal ischemia-reperfusion injury using biochemical and histopathological parameters. CD38, cADPR, tumor necrosis factor-α, interleukin-1β, and myeloperoxidase (inflammatory markers), urea and creatinine, hydrogen peroxide (oxidant), and catalase (antioxidant enzyme) levels that increase with ischemia-reperfusion injury decreased in the groups treated with 8-Br-cADPR. In addition, renin levels were elevated in the groups treated with 8-Br-cADPR. Histopathological examination revealed that 8-Br-cADPR reduced renal damage and the expression of caspase-3 and TRPM2. Our results suggest that the inhibition of TRPM2 ion channel may be a new treatment modality for ischemic acute kidney injury.
Collapse
Affiliation(s)
- Ersen Eraslan
- Department of Physiology, Faculty of Medicine, University of Bozok, Yozgat, Turkey
| | - Ayhan Tanyeli
- Department of Physiology, Faculty of Medicine, University of Atatürk, Erzurum, Turkey
| | - Elif Polat
- Department of Biochemistry, Faculty of Medicine, University of Atatürk, Erzurum, Turkey
| | - Elif Polat
- Department of Histology and Embryology, Faculty of Medicine, University of Namık Kemal, Tekirdağ, Turkey
| |
Collapse
|
17
|
Mohamadi Yarijani Z, Godini A, Madani SH, Najafi H. Reduction of cisplatin-induced renal and hepatic side effects in rat through antioxidative and anti-inflammatory properties of Malva sylvestris L. extract. Biomed Pharmacother 2018; 106:1767-1774. [PMID: 30119252 DOI: 10.1016/j.biopha.2018.07.115] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Cisplatin is widely used in the chemotherapy of solid organ cancers. However, its application is associated with serious side effects in various organs including the kidneys and liver. OBJECTIVES The aim of this study was to investigate the effects of mallow extract on the side effects of cisplatin in the kidneys and liver. METHODS Hydroalcoholic extract of mallow, at doses of 200, 400, and 600 mg/kg BW, was administered to the animals for seven days intraperitoneally (ip). Animals in the Cis + Mallow group received a dose of cisplatin (8 mg/kg, ip) on the third day. Renal and hepatic functional disturbances were evaluated by measuring concentrations of creatinine, urea-nitrogen, aspartate aminotransferase (AST), and alanine aminotransferase (ALT) in the plasma. In order to assess oxidative stress, malondialdehyde (MDA) and ferric reducing antioxidant power (FRAP) levels were measured in the kidney tissue. Then, degree of mRNA expressions of TNF-α and ICAM-1 were measured to examine renal inflammation. Hematoxylin and Eosin (H & E) staining of kidney and liver tissues was performed to study tissue damage and leukocyte infiltration. RESULTS Cisplatin increased levels of plasma creatinine, urea-nitrogen, AST, and ALT; levels of tissue damage and leukocytes infiltration in the kidneys and liver; and MDA level and expression of pro-inflammatory factors in the kidney tissue. Meanwhile, it decreased FRAP level in the kidney tissue. Pretreatment by mallow extract resulted in significant improvement in all measured variables although 200-mg and 400-mg doses yielded better results. CONCLUSION Results showed that mallow supplement protects the kidneys and liver against side effects of cisplatin, and reduces the resultant oxidative stress and inflammation.
Collapse
Affiliation(s)
| | - Aliashraf Godini
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Seyed Hamid Madani
- Department of Pathology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Houshang Najafi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| |
Collapse
|
18
|
Liu L, Zuo Z, Lu S, Wang L, Liu A, Liu X. Silencing of PINK1 represses cell growth, migration and induces apoptosis of lung cancer cells. Biomed Pharmacother 2018; 106:333-341. [PMID: 29966978 DOI: 10.1016/j.biopha.2018.06.128] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/22/2018] [Accepted: 06/22/2018] [Indexed: 12/15/2022] Open
Abstract
PTEN induced putative kinase 1 (PINK1) has been found to be up-regulated, which promotes the proliferation and chemoresistance in lung cancer. Nevertheless, the role and detailed mechnisms of PINK1 in lung cancer have not been fully understood, which need to be further clarified. In this study, the resluts showed that silencing of PINK1 inhibited proliferation and blocked cell cycle of lung cancer cells. Furthermore, the apoptosis rate was enhanced by PINK1 suppression, as evidenced by increased protein levels of Bax, cleaved caspase-3 and cleaved poly (ADP-ribose) polymerase (PARP), and decreased level of Bcl-2. The migration and invasion abilities were also restrained by PINK1 silencing. Silencing of PINK1 also resulted in oxygen species (ROS) overproduction and decreased mitochondrial membrane potential. Finally, suppression of PINK1 repressed the growth of xenograft tumor and induced apoptosis in tumor tissues in vivo. This study might lead to PINK1 kinase as a novel therapeutic target for lung cancer treatment.
Collapse
Affiliation(s)
- Lihua Liu
- Department of Respiratory Medicine, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121001, People's Republic of China
| | - Zhongfu Zuo
- Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, Liaoning, 121001, People's Republic of China
| | - Sijing Lu
- Department of Respiratory Medicine, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121001, People's Republic of China
| | - Lihua Wang
- Medical Record Room, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121001, People's Republic of China
| | - Aihua Liu
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121001, People's Republic of China
| | - Xuezheng Liu
- Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, Liaoning, 121001, People's Republic of China.
| |
Collapse
|
19
|
A selective cyclin-dependent kinase 4, 6 dual inhibitor, Ribociclib (LEE011) inhibits cell proliferation and induces apoptosis in aggressive thyroid cancer. Cancer Lett 2018; 417:131-140. [PMID: 29306020 DOI: 10.1016/j.canlet.2017.12.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 12/16/2017] [Accepted: 12/21/2017] [Indexed: 12/23/2022]
Abstract
The RB-E2F1 pathway is an important mechanism of cell-cycle control, and deregulation of this pathway is one of the key factors contributing to tumorigenesis. Cyclin-dependent kinases (CDKs) and Cyclin D have been known to increase in aggressive thyroid cancer. However, there has been no study to investigate effects of a selective CDK 4/6 inhibitor, Ribociclib (LEE011), in thyroid cancer. Performing Western blotting, we found that RB phosphorylation and the expression of Cyclin D are significantly higher in papillary thyroid cancer (PTC) cell lines as well as anaplastic thyroid cancer (ATC) cell lines, compared with normal thyroid cell line and follicular thyroid cancer cell line. LEE011 dose-dependently inhibited RB phosphorylation and also decreased the expressions of its target genes such as FOXM1, Cyclin A1, and Myc in ATC. Furthermore, LEE011 induced cell cycle arrest in G0-G1 phase and cell apoptosis, and inhibited cell proliferation in ATC. Consistently, oral administration of LEE011 to ATC xenograft models strongly inhibited tumor growth with decreased expressions of pRB, pAKT and Ki-67, and also significantly increased tumor cell apoptosis. Taken together, our data support the rationale for clinical development of the CDK4/6 inhibitor as a therapy for patients with aggressive thyroid cancer.
Collapse
|
20
|
Tian Y, Du YY, Shang H, Wang M, Sun ZH, Wang BQ, Deng D, Wang S, Xu XD, Sun GB, Sun XB. Calenduloside E Analogues Protecting H9c2 Cardiomyocytes Against H 2O 2-Induced Apoptosis: Design, Synthesis and Biological Evaluation. Front Pharmacol 2017; 8:862. [PMID: 29218010 PMCID: PMC5703861 DOI: 10.3389/fphar.2017.00862] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/09/2017] [Indexed: 01/08/2023] Open
Abstract
Modulation of apoptosis is therapeutically effective in cardiomyocytes damage. Calenduloside E (CE), a naturally occurring triterpenoid saponin, is a potent anti-apoptotic agent. However, little is known about its synthetic analogues on the protective effects in apoptosis of cardiomyocytes. The present research was performed to investigate the potential protective effect of CE analogues against H2O2-induced apoptosis in H9c2 cardiomyocytes and the underlying mechanisms. Sixteen novel CE anologues have been designed, synthesized and biological evaluation. Among the 16 CE anologues, as well as the positive control CE tested, compound 5d was the most effective in improving cardiomyocytes viability. Pretreatment with anologue 5d inhibited ROS generation, maintained the mitochondrial membrane potential and reduced apoptotic cardiomyocytes. Moreover, exposure to H2O2 significantly increased the levels of Bax, cleaved caspase-3, and cleaved PARP, and decreased the level of Bcl-2, resulting in cell apoptosis. Pretreatment with anologue 5d (0.02-0.5 μg/mL) dose-dependently upregulated antiapoptotic proteins and downregulated proapoptotic proteins mentioned above during H2O2-induced apoptosis. These results suggested that CE analogues provide protection to H9c2 cardiomyocytes against H2O2-induced oxidative stress and apoptosis, most likely via anti-apoptotic mechanism, and provided the basis for the further optimization of the CE analogues.
Collapse
Affiliation(s)
- Yu Tian
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu-Yang Du
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hai Shang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Min Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhong-Hao Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bao-Qi Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Center of Research and Development on Life Sciences and Environment Sciences, Harbin University of Commerce, Harbin, China
| | - Di Deng
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Center of Research and Development on Life Sciences and Environment Sciences, Harbin University of Commerce, Harbin, China
| | - Shan Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xu-Dong Xu
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gui-Bo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao-Bo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Zhong Guan Cun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
21
|
Zhang JY, Guo Y, Si JP, Sun XB, Sun GB, Liu JJ. A polysaccharide of Dendrobium officinale ameliorates H2O2-induced apoptosis in H9c2 cardiomyocytes via PI3K/AKT and MAPK pathways. Int J Biol Macromol 2017; 104:1-10. [DOI: 10.1016/j.ijbiomac.2017.05.169] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 05/05/2017] [Accepted: 05/30/2017] [Indexed: 10/19/2022]
|
22
|
Wang M, Sun GB, Du YY, Tian Y, Liao P, Liu XS, Ye JX, Sun XB. Myricitrin Protects Cardiomyocytes from Hypoxia/Reoxygenation Injury: Involvement of Heat Shock Protein 90. Front Pharmacol 2017. [PMID: 28642708 PMCID: PMC5462924 DOI: 10.3389/fphar.2017.00353] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Modulation of oxidative stress is therapeutically effective in ischemia/reperfusion (I/R) injury. Myricitrin, a naturally occurring phenolic compound, is a potent antioxidant. However, little is known about its effect on I/R injury to cardiac myocytes. The present study was performed to investigate the potential protective effect of myricitrin against hypoxia/reoxygenation (H/R)-induced H9c2 cardiomyocyte injury and its underlying mechanisms. Myricitrin pretreatment improved cardiomyocyte viability, inhibited ROS generation, maintained the mitochondrial membrane potential, reduced apoptotic cardiomyocytes, decreased the caspase-3 activity, upregulated antiapoptotic proteins and downregulated proapoptotic proteins during H/R injury. Moreover, the potential targets of myricitrin was predicted using Discovery Studio software, and heat shock protein 90 (Hsp90) was identified as the main disease-related target. Further mechanistic investigation revealed that 17-AAG, a pharmacologic inhibitor of Hsp90, significantly blocked the myricitrin-induced cardioprotective effect demonstrated by increased apoptosis and ROS generation. These results suggested that myricitrin provides protection to H9c2 cardiomyocytes against H/R-induced oxidative stress and apoptosis, most likely via increased expression of Hsp90.
Collapse
Affiliation(s)
- Min Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences-Peking Union Medical CollegeBeijing, China
| | - Gui-Bo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences-Peking Union Medical CollegeBeijing, China
| | - Yu-Yang Du
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences-Peking Union Medical CollegeBeijing, China
| | - Yu Tian
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences-Peking Union Medical CollegeBeijing, China
| | - Ping Liao
- College of Pharmacy, Guilin Medical UniversityGuilin, China
| | - Xue-Song Liu
- Center of Research and Development on Life Sciences and Environmental Sciences, Harbin University of CommerceHarbin, China
| | - Jing-Xue Ye
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences-Peking Union Medical CollegeBeijing, China
| | - Xiao-Bo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences-Peking Union Medical CollegeBeijing, China
| |
Collapse
|
23
|
Zhu JH, Zhang X, McClung JP, Lei XG. Impact of Cu, Zn-Superoxide Dismutase and Se-Dependent Glutathione Peroxidase-1 Knockouts on Acetaminophen-Induced Cell Death and Related Signaling in Murine Liver. Exp Biol Med (Maywood) 2016; 231:1726-32. [PMID: 17138759 DOI: 10.1177/153537020623101109] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
There is increasing evidence showing dual functions of antioxidant enzymes in coping with reactive oxygen species (ROS) versus reactive nitrogen species (RNS). The objective of this study was to compare the impacts of knockout of Cu, Zn-superoxide dismutase (SOD1) and Se-dependent glutathione peroxidase-1 (GPX1) on cell death and related signaling mediated by acetaminophen (APAP), a RNS inducer in liver. Two groups of young adult knockout mice (SOD1−-/– and GPX1−-/–), along with their wild types (WT), were killed 5 hrs after an ip injection of saline or APAP (300 mg/kg body wt). While the WT mice showed more hepatic necrosis and DNA breakage than the GPX1−-/– mice, the SOD1−-/– mice had essentially no positive response compared with their saline-injected controls. The APAP treatment activated liver c-jun N-terminal kinase (JNK) in the WT and GPX1−-/– mice, but not in the SOD1−-/– mice. The APAP-induced changes in other cell death-related signal proteins such as p21, caspase-3, and poly(ADP-ribose) polymerase (PARP) also were obviated in the SOD1−-/– mice. In conclusion, knockout of GPX1 did not potentiate APAP-induced cell death and related signaling, whereas the SOD1 null blocked APAP-induced hepatic JNK phosphorylation and cell death.
Collapse
Affiliation(s)
- Jian-Hong Zhu
- Department of Animal Science, Cornell University, Ithaca, NY 14853, USA
| | | | | | | |
Collapse
|
24
|
Huang CY, Ting WJ, Huang CY, Yang JY, Lin WT. Resveratrol attenuated hydrogen peroxide-induced myocardial apoptosis by autophagic flux. Food Nutr Res 2016; 60:30511. [PMID: 27211317 PMCID: PMC4876196 DOI: 10.3402/fnr.v60.30511] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 12/25/2022] Open
Abstract
Background Resveratrol is a Sirt-1-specific activator, which also exerts cardioprotective effects that regulate redox signalling during oxidative stress and autophagy during cardiovascular disease (CVD). Objective This study investigated the protective effects of resveratrol against hydrogen peroxide-induced damage in cardiomyocytes. Design In this article, hydrogen peroxide-induced autophagy and apoptosis in H9c2 cardiomyoblasts were studied at an increasing concentration from 0 to 100 µM. Results Resveratrol pretreatment with concentrations of 10, 20, and 50 µM inhibits autophagic apoptosis by increasing p-Akt and Bcl-2 protein levels in H9c2 cells. Interestingly, resveratrol treatment activates the Beclin-1, LC3, p62, and the lysosome-associated protein LAMP2a within 24 h of administration. Conclusions These results suggest that resveratrol-regulated autophagy may play a role in degrading damaged organelles in H9c2 cells rather than causing apoptosis, and this may be a possible mechanism by which resveratrol protects the heart during CVD.
Collapse
Affiliation(s)
- Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Wei-Jen Ting
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- Translation Research Core, China Medical University Hospital, Taichung, Taiwan
| | - Jing-Yi Yang
- Department of Hospitality Management, College of Agriculture, Tunghai University, Taichung, Taiwan
| | - Wan-Teng Lin
- Department of Hospitality Management, College of Agriculture, Tunghai University, Taichung, Taiwan;
| |
Collapse
|
25
|
Ge G, Zhou C, Ren Y, Tang X, Wang K, Zhang W, Niu L, Zhou Y, Yan Y, He J. Enhanced SLC34A2 in breast cancer stem cell-like cells induces chemotherapeutic resistance to doxorubicin via SLC34A2-Bmi1-ABCC5 signaling. Tumour Biol 2015; 37:5049-62. [PMID: 26546432 DOI: 10.1007/s13277-015-4226-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/12/2015] [Indexed: 12/23/2022] Open
Abstract
Even though early detection methods and treatment options are greatly improved, chemoresistance is still a tremendous challenge for breast cancer therapy. Breast cancer stem cells (BCSCs) represent a subpopulation that is central to chemoresistance. We aim to investigate the relationship between SLC34A2 and chemoresistance in BCSCs and identify the underlying mechanisms by which SLC34A2 regulates chemoresistance in BCSCs. Fluorescence Activated Cell Sorting (FACS) analysis showed the presence of a variable fraction of CD44(+)CD24(-) cells in 25 out of 25 breast cancer samples. We cultured primary breast cancer sample cells and breast cancer cell line cells to induce sphere formation in serum-free medium. Following sorting of CD44(+)CD24(-) cells from spheres, we showed that CD44(+)CD24(-) cells displayed stem cell-like features and were resistant to chemotherapy drug doxorubicin. Significantly, enhanced SLC34A2 expression correlated with chemoresponse and survival of breast cancer patients. We subsequently indicated that increased SLC34A2 expression in BCSCs directly contributed to their chemoresistance by a series of in vitro and in vivo experiments. Furthermore, we demonstrated that SLC34A2 induced chemoresistance in BCSCs via SLC34A2-Bmi1-ABCC5 signaling. Finally, we showed that ABCC5 was a direct transcriptional target of Bmi1 by chromatin immunoprecipitation (ChIP). In conclusion, our work indicated that decreased SLC34A2 expression sensitized BCSCs to doxorubicin via SLC34A2-Bmi1-ABCC5 signaling and shed new light on understanding the mechanism of chemoresistance in BCSCs. This study not only bridges the missing link between stem cell-related transcription factor (Bmi1) and ABC transporter (ABCC5) but also contributes to development of potential therapeutics against breast cancer.
Collapse
Affiliation(s)
- Guanqun Ge
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Can Zhou
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Yu Ren
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Xiaojiang Tang
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Ke Wang
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Wei Zhang
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Ligang Niu
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Yuhui Zhou
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Yu Yan
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China
| | - Jianjun He
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, NO. 277, Yantaxi Road, Xi'an, 710061, Shanxi Province, People's Republic of China.
| |
Collapse
|
26
|
Winter J, Klumpe I, Heger J, Rauch U, Schultheiss HP, Landmesser U, Dörner A. Adenine nucleotide translocase 1 overexpression protects cardiomyocytes against hypoxia via increased ERK1/2 and AKT activation. Cell Signal 2015; 28:152-9. [PMID: 26548633 DOI: 10.1016/j.cellsig.2015.11.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 10/28/2015] [Accepted: 11/03/2015] [Indexed: 11/16/2022]
Abstract
The influence of mitochondrial function on intracellular signalling is currently under intense investigation. In this regard, we analysed the effect of adenine nucleotide translocase 1 (ANT1), which facilitates the exchange of ADP and ATP across the mitochondrial membrane, on cell-protective survival signalling under hypoxia. ANT1 overexpression enhanced the survival rate in hypoxic cardiomyocytes. The effect was related to stabilization of the mitochondrial membrane potential, suppression of caspase 3 activity, and a reduction in DNA fragmentation. Activation of the cell-protective signalling proteins extracellular signal-regulated kinases 1 and 2 (ERK1/2) and protein kinase B (AKT) was substantially higher in hypoxic ANT1-transgenic (ANT1-TG) cardiomyocytes than in wild-type cardiomyocytes. Kinase activation was associated with significantly higher expression of hypoxia-inducible factor 1α, which induces glycolytic pathway to stabilize ATP production. Accordingly, ANT1-TG cardiomyocytes exhibited earlier and stronger activation of lactate dehydrogenase and a higher ATP content. Treatment with PD980559 and triciribine, inhibitors of ERK1/2 and AKT activation, respectively, abolished cell protection in hypoxic ANT1-TG cardiomyocytes. Inhibition of ANT by carboxyatractyloside prevented the increase in ERK1/2 and AKT phosphorylation and eliminated the cell protective program in hypoxic ANT1-TG cardiomyocytes. In conclusion, the cytoprotective effect observed in hypoxic ANT1-overexpressing cardiomyocytes involves an interdependence between ANT1, activation of ERK1/ERK2 and AKT, and induction of the survival processes regulated by these kinases.
Collapse
Affiliation(s)
- Julia Winter
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany; Institute of Chemistry and Biochemistry, Structural Biochemistry, Free University Berlin, Takustr. 6, 14195, Berlin, Germany
| | - Inga Klumpe
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany; Institute of Biochemistry, Free University Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Jacqueline Heger
- Institute of Physiology, Justus-Liebig-University, Aulweg 129, 35392 Giessen, Germany
| | - Ursula Rauch
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Heinz-Peter Schultheiss
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Ulf Landmesser
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Andrea Dörner
- Department of Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany.
| |
Collapse
|
27
|
Wang M, Si JY, Yu YL, Gao MM, Zhang JY, Xing XY, Liu Y, Sun GB, Sun XB. Red clover flavonoids protect against oxidative stress-induced cardiotoxicity in vivo and in vitro. RSC Adv 2014. [DOI: 10.1039/c4ra08407a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
28
|
Fascin is involved in the chemotherapeutic resistance of breast cancer cells predominantly via the PI3K/Akt pathway. Br J Cancer 2014; 111:1552-61. [PMID: 25117814 PMCID: PMC4200093 DOI: 10.1038/bjc.2014.453] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/14/2014] [Accepted: 07/16/2014] [Indexed: 01/03/2023] Open
Abstract
Background: A major therapeutic challenge for breast cancer is the ability of cancer cells to evade killing of conventional chemotherapeutic agents. We have recently reported the actin-bundling protein (fascin) as a major regulator of breast cancer metastasis and survival. Methods: Survival of breast cancer patients that received chemotherapy and xenograft tumour model was used to assess the effect of chemotherapy on fascin-positive and -negative breast cancer cells. Molecular and cellular assays were used to gain in-depth understanding of the relationship between fascin and chemoresistance. Results: We showed a significant correlation between fascin expression and shorter survival in breast cancer patients who received chemotherapy. In xenograft experiments, fascin-positive cancer cells displayed significantly more resistance to chemotherapy-mediated apoptotic cell death than fascin-negative counterparts. This increased chemoresistance was at least partially mediated through PI3K/Akt signalling, and was paralleled by increased FAK phosphorylation, enhanced expression of the inhibitor of apoptosis proteins (XIAP and Livin) and suppression of the proapoptotic markers (caspase 9, caspase 3 and PARP). Conclusions: This is the first report to demonstrate fascin involvement in breast cancer chemotherapeutic resistance, supporting the development of fascin-targeting drugs for better treatment of chemoresistance breast cancer.
Collapse
|
29
|
Chang WW, Liu JJ, Liu CF, Liu WS, Lim YP, Cheng YJ, Lee CH. An extract of Rhodobacter sphaeroides reduces cisplatin-induced nephrotoxicity in mice. Toxins (Basel) 2013; 5:2353-65. [PMID: 24335753 PMCID: PMC3873690 DOI: 10.3390/toxins5122353] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 11/18/2013] [Accepted: 11/25/2013] [Indexed: 01/29/2023] Open
Abstract
Cisplatin is used as a treatment for various types of solid tumors. Renal injury severely limits the use of cisplatin. Renal cell apoptosis, oxidative stress, and inflammation contribute to cisplatin-induced nephrotoxicity. Previously, we found that an extract of Rhodobacter sphaeroides (Lycogen™) inhibited proinflammatory cytokines and the production of nitric oxide in activated macrophages in a dextran sodium sulfate (DSS)-induced colitis model. Here, we evaluated the effect of Lycogen™, a potent anti-inflammatory agent, in mice with cisplatin-induced renal injury. We found that attenuated renal injury correlated with decreased apoptosis due to a reduction in caspase-3 expression in renal cells. Oral administration of Lycogen™ significantly reduced the expression of tumor necrosis factor-α and interleukin-1β in mice with renal injury. Lycogen™ reduces renal dysfunction in mice with cisplatin-induced renal injury. The protective effects of the treatment included blockage of the cisplatin-induced elevation in serum urea nitrogen and creatinine. Meanwhile, Lycogen™ attenuated body weight loss and significantly prolonged the survival of mice with renal injury. We propose that Lycogen™ exerts anti-inflammatory activities that represent a promising strategy for the treatment of cisplatin-induced renal injury.
Collapse
Affiliation(s)
- Wen-Wei Chang
- Department of Biomedical Sciences, College of Medical Science and Technology, Chung Shan Medical University, Taichung 402, Taiwan; E-Mail:
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Jau-Jin Liu
- Department of Microbiology, School of Medicine, China Medical University, Taichung 404, Taiwan; E-Mails: (J.-J.L.); (C.-F.L.)
| | - Chi-Fan Liu
- Department of Microbiology, School of Medicine, China Medical University, Taichung 404, Taiwan; E-Mails: (J.-J.L.); (C.-F.L.)
| | - Wen-Sheng Liu
- Asia-Pacific Biotech Developing, Inc. Kaohsiung 806, Taiwan; E-Mail:
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Yun-Ping Lim
- Department of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan; E-Mail:
| | - Yu-Jung Cheng
- Department of Physical Therapy, Graduate Institute of Rehabilitation Science, China Medical University, Taichung 404, Taiwan; E-Mail:
| | - Che-Hsin Lee
- Department of Microbiology, School of Medicine, China Medical University, Taichung 404, Taiwan; E-Mails: (J.-J.L.); (C.-F.L.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-4-2205-3366-2173; Fax: +886-4-2205-3764
| |
Collapse
|
30
|
Chiappini F, Pontillo C, Randi AS, Alvarez L, Kleiman de Pisarev DL. Reactive Oxygen Species and Extracellular Signal-Regulated Kinase 1/2 Mediate Hexachlorobenzene-Induced Cell Death in FRTL-5 Rat Thyroid Cells. Toxicol Sci 2013; 134:276-90. [DOI: 10.1093/toxsci/kft117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
|
31
|
Stagg HW, Bowen KA, Sawant DA, Rodriguez M, Tharakan B, Childs EW. Tumor necrosis factor-related apoptosis-inducing ligand promotes microvascular endothelial cell hyperpermeability through phosphatidylinositol 3-kinase pathway. Am J Surg 2013; 205:419-25. [PMID: 23375756 DOI: 10.1016/j.amjsurg.2012.10.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 09/14/2012] [Accepted: 10/08/2012] [Indexed: 12/14/2022]
Abstract
BACKGROUND Microvascular hyperpermeability that occurs in hemorrhagic shock and burn trauma is regulated by the apoptotic signaling pathway. We hypothesized that tumor necrosis factor-α (TNF-α)-related apoptosis-inducing ligand (TRAIL) would promote hyperpermeability directly or by interacting with other signaling pathways. METHODS Rat lung microvascular endothelial cells (RLMECs) grown on Transwell membranes (Corning Life Sciences, Lowell, MA) were treated with recombinant human TRAIL (10, 50, and 100 ng/mL) for 6 hours or TRAIL (100 ng/mL) + LY294002 (a PI3K inhibitor; 20 μmol/L), Z-DEVD-FMK (a caspase-3 inhibitor; 10 μmol/L), or the inhibitors alone. Fluorescein isothiocyanate (FITC)-albumin flux was an indicator of permeability. Caspase-3 activity was measured fluorometrically. Adherens junction integrity was studied using β-catenin immunofluorescence. RESULTS TRAIL + LY294002, but not TRAIL alone, induced monolayer hyperpermeability (P < .05), and caspase-3 activity (P < .05), and disrupted the adherens junctions. Z-DEVD-FMK attenuated hyperpermeability and protected the adherens junctions. CONCLUSIONS TRAIL-induced microvascular hyperpermeability is phosphatidylinositol 3-kinase (PI3K)-dependent and may be mediated by caspase-3 cleavage of the endothelial adherens junctional complex.
Collapse
Affiliation(s)
- Hayden W Stagg
- Department of Surgery, Texas A&M Health Science Center College of Medicine and Scott & White Memorial Hospital, 702 SW H.K. Dodgen Loop, Temple, TX 76504, USA
| | | | | | | | | | | |
Collapse
|
32
|
Luanpitpong S, Chanvorachote P, Stehlik C, Tse W, Callery PS, Wang L, Rojanasakul Y. Regulation of apoptosis by Bcl-2 cysteine oxidation in human lung epithelial cells. Mol Biol Cell 2013; 24:858-69. [PMID: 23363601 PMCID: PMC3596255 DOI: 10.1091/mbc.e12-10-0747] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Bcl-2 interacts with ERK to suppress apoptosis. Hydrogen peroxide disrupts the interaction through Bcl-2 cysteine oxidation, which promotes apoptosis. These findings provide a novel redox regulatory mechanism that controls apoptosis via Bcl-2 cysteine oxidation, which could aid in the understanding of pathogenesis under oxidative stress conditions. Hydrogen peroxide is a key mediator of oxidative stress known to be important in various cellular processes, including apoptosis. B-cell lymphoma-2 (Bcl-2) is an oxidative stress–responsive protein and a key regulator of apoptosis; however, the underlying mechanisms of oxidative regulation of Bcl-2 are not well understood. The present study investigates the direct effect of H2O2 on Bcl-2 cysteine oxidation as a potential mechanism of apoptosis regulation. Exposure of human lung epithelial cells to H2O2 induces apoptosis concomitant with cysteine oxidation and down-regulation of Bcl-2. Inhibition of Bcl-2 oxidation by antioxidants or by site-directed mutagenesis of Bcl-2 at Cys-158 and Cys-229 abrogates the effects of H2O2 on Bcl-2 and apoptosis. Immunoprecipitation and confocal microscopic studies show that Bcl-2 interacts with mitogen-activated protein kinase (extracellular signal-regulated kinase 1/2 [ERK1/2]) to suppress apoptosis and that this interaction is modulated by cysteine oxidation of Bcl-2. The H2O2-induced Bcl-2 cysteine oxidation interferes with Bcl-2 and ERK1/2 interaction. Mutation of the cysteine residues inhibits the disruption of Bcl-2–ERK complex, as well as the induction of apoptosis by H2O2. Taken together, these results demonstrate the critical role of Bcl-2 cysteine oxidation in the regulation of apoptosis through ERK signaling. This new finding reveals crucial redox regulatory mechanisms that control the antiapoptotic function of Bcl-2.
Collapse
Affiliation(s)
- Sudjit Luanpitpong
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, USA
| | | | | | | | | | | | | |
Collapse
|
33
|
Astragaloside IV prevents acute kidney injury in two rodent models by inhibiting oxidative stress and apoptosis pathways. Apoptosis 2013; 18:409-22. [DOI: 10.1007/s10495-013-0801-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
34
|
Ardalan MR, Estakhri R, Hajipour B, Ansarin K, Asl NA, Nasirizade MR, Azar AN, Ghorbanihaghjou A, Vatankhah AM, Esmaili HA. Erythropoietin ameliorates oxidative stress and tissue injury following renal ischemia/reperfusion in rat kidney and lung. Med Princ Pract 2013; 22:70-4. [PMID: 23006583 PMCID: PMC5586709 DOI: 10.1159/000340060] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Accepted: 06/10/2012] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To study the effect of erythropoietin (EPO) treatment on renal and lung injury following renal ischemia/reperfusion (I/R). MATERIALS AND METHODS Thirty male Wistar rats were assigned to three groups of 10 rats each. The first group was sham-operated, the second was subjected to renal I/R (30 min of ischemia followed by 24 h of reperfusion). The third group was subjected to renal I/R and treated with EPO in two doses: the first dose 1 h prior to ischemia (1,000 U/kg) and the second dose 6 h after ischemia (1,000 U/kg). RESULTS The renal and lung tissue injury index, tissue serum blood urea nitrogen and creatinine (Cr) were higher in the renal I/R group compared to the renal I/R + EPO group; the difference was statistically significant (p < 0.05). Kidney and lung tissue glutathione peroxidase and superoxide dismutase levels were higher in the renal I/R + EPO group than the renal I/R group; the difference was also statistically significant (p < 0.05). CONCLUSION The data showed that EPO pretreatment could be effective in reducing renal and lung injury following renal I/R and could improve the cellular antioxidant defense system. Hence EPO pretreatment may be effective for attenuating renal and lung injury after renal I/R-induced injury during surgical procedures, hypotension, renal transplantation and other conditions inducing renal I/R.
Collapse
Affiliation(s)
| | | | - Babak Hajipour
- Urmia University of Medical Sciences, Urmia, Iran
- *Babak Hajipou, Young Researchers Club, Tabriz Branch, Islamic Azad University, Postbox 51385-3633, Tabriz (Iran), Tel. +98 914 107 5936, E-Mail
| | - Khalil Ansarin
- Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Urmia, Iran
| | | | - Mohammad Reza Nasirizade
- Department of Physiology, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Urmia, Iran
| | - Alireza Nour Azar
- Department of Physiology, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Urmia, Iran
| | | | | | | |
Collapse
|
35
|
Cilastatin protects against cisplatin-induced nephrotoxicity without compromising its anticancer efficiency in rats. Kidney Int 2012; 82:652-63. [PMID: 22718191 DOI: 10.1038/ki.2012.199] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cisplatin is an anticancer agent marred by nephrotoxicity; however, limiting this adverse effect may allow the use of higher doses to improve its efficacy. Cilastatin, a small molecule inhibitor of renal dehydropeptidase I, prevents proximal tubular cells from undergoing cisplatin-induced apoptosis in vitro. Here, we explored the in vivo relevance of these findings and the specificity of protection for kidney cells in cisplatin-treated rats. Cisplatin increased serum blood urea nitrogen and creatinine levels, and the fractional excretion of sodium. Cisplatin decreased the glomerular filtration rate, promoted histological renal injury and the expression of many pro-apoptotic proteins in the renal cortex, increased the Bax/Bcl2 ratio, and oxidative stress in kidney tissue and urine. All these features were decreased by cilastatin, which preserved renal function but did not modify the pharmacokinetics of cisplatin area under the curve. The cisplatin-induced death of cervical, colon, breast, and bladder-derived cancer cell lines was not prevented by cilastatin. Thus, cilastatin has the potential to prevent cisplatin nephrotoxicity without compromising its anticancer efficacy.
Collapse
|
36
|
Conticello C, Martinetti D, Adamo L, Buccheri S, Giuffrida R, Parrinello N, Lombardo L, Anastasi G, Amato G, Cavalli M, Chiarenza A, De Maria R, Giustolisi R, Gulisano M, Di Raimondo F. Disulfiram, an old drug with new potential therapeutic uses for human hematological malignancies. Int J Cancer 2012; 131:2197-203. [PMID: 22322883 DOI: 10.1002/ijc.27482] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 01/11/2012] [Indexed: 01/08/2023]
Abstract
Disulfiram (DSF) is an aldehyde dehydrogenase inhibitor currently used for the treatment of alcoholism. Here, we show that multiple myeloma (MM) cell lines and primary cells from newly diagnosed and relapsed/resistant patients affected by MM, acute myeloid and lymphoblastic leukemia are significantly sensitive to DSF alone and in combination with copper. These effects are present at doses lower than those achievable in vivo after DSF standard administration. The cytotoxic effect achieved by this treatment is comparable to that obtained by conventional chemotherapy and is absent in normal hematopoietic cells. In addition, we found that DSF plus copper induces loss of mitochondrial membrane potential, triggers reactive oxygen species (ROS) production and activates executioner caspases. DSF-copper-induced apoptosis and caspases activation are strongly reversed by antioxidant N-acetylcysteine, thus indicating a critical role of ROS. These results might suggest the use of the old drug DSF, alone or in combination with copper, in the treatment of hematological malignancies.
Collapse
Affiliation(s)
- Concetta Conticello
- Department of Experimental Oncology, Mediterranean Institute of Oncology, Via Penninazzo 7, Viagrande, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Li Y, Yin S, Nie D, Xie S, Ma L, Wang X, Wu Y, Xiao J. MK886 inhibits the proliferation of HL-60 leukemia cells by suppressing the expression of mPGES-1 and reducing prostaglandin E2 synthesis. Int J Hematol 2011; 94:472-8. [PMID: 22038016 DOI: 10.1007/s12185-011-0954-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 10/02/2011] [Accepted: 10/03/2011] [Indexed: 01/10/2023]
Abstract
Microsomal prostaglandin E synthase-1 (mPGES-1), an inducible enzyme that specifically catalyzes the conversion of prostaglandin H2 (PGH2) to prostaglandin E2 (PGE2), has been reported to be over-expressed in a variety of solid tumor cells and tissues, but not in normal tissues. Its association with leukemia, however, has not been fully investigated. Our study revealed, for the first time, that mPGES-1 is over-expressed in human acute myeloid leukemia HL-60 cells. Cytotoxicity assays and flow cytometry showed that MK886, an inhibitor of mPGES-1, inhibits proliferation of HL-60 cells and induces apoptosis in a dose- and time-dependent manner, which may result from down-regulation of mPGES-1 expression and PGE2 synthesis. Evaluation of mediators of apoptotic signaling revealed up-regulation of BAX expression and caspase-3 activity, as well as significant decreases in Bcl2 and P-Akt. We conclude that MK886 reduces the viability of leukemia HL-60 cells by reducing mPGES-1 expression and PGE2 synthesis in a dose-dependent manner, which strongly suggests that mPGES-1 inhibitors should be considered as promising candidates for leukemia treatment.
Collapse
Affiliation(s)
- YiQing Li
- Department of Hematology, Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, The SUN Yat-sen Memorial Hospital of SUN Yat-sen University, 107 Yanjiangxi Rd, Guangzhou, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Rane MJ, Song Y, Jin S, Barati MT, Wu R, Kausar H, Tan Y, Wang Y, Zhou G, Klein JB, Li X, Cai L. Interplay between Akt and p38 MAPK pathways in the regulation of renal tubular cell apoptosis associated with diabetic nephropathy. Am J Physiol Renal Physiol 2009; 298:F49-61. [PMID: 19726550 DOI: 10.1152/ajprenal.00032.2009] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Hyperglycemia induces p38 MAPK-mediated renal proximal tubular cell (RPTC) apoptosis. The current study hypothesized that alteration of the Akt signaling pathway by hyperglycemia may contribute to p38 MAPK activation and development of diabetic nephropathy. Immunoblot analysis demonstrated a hyperglycemia-induced increase in Akt phosphorylation in diabetic kidneys at 1 mo, peaking at 3 mo, and dropping back to baseline by 6 mo. Immunohistochemical staining with anti-pAkt antisera localized Akt phosphorylation to renal tubules. Maximal p38 MAPK phosphorylation was detected concomitant with increase in terminal uridine deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL)-positive cells and caspase-3 activity in 6-mo diabetic kidneys. Exposure of cultured RPTCs to high glucose (HG; 22.5 mM) significantly increased Akt phosphorylation at 3, 6, and 9 h, and decreased thereafter. In contrast, p38 MAPK phosphorylation was detected between 9 and 48 h of HG treatment. Increased p38 MAPK activation at 24 and 48 h coincided with increased apoptosis, demonstrated by increased caspase-3 activity at 24 h and increased TUNEL-positive cells at 48 h of HG exposure. Blockade of p38 cascade with SB203850 inhibited HG-induced caspase-3 activation and TUNEL-positive cells. Overexpression of constitutively active Akt abrogated HG-induced p38 MAPK phosphorylation and RPTC apoptosis. In addition, blockade of the phosphatidylinositol-3 kinase/Akt pathway with LY294002 and silencing of Akt expression with Akt small interfering RNA induced p38 MAPK phosphorylation in the absence of HG. These results collectively suggest that downregulation of Akt activation during long-term hyperglycemia contributes to enhanced p38 MAPK activation and RPTC apoptosis. Mechanism of downregulation of Akt activation in 6-mo streptozotocin diabetic kidneys was attributed to decreased Akt-heat shock protein (Hsp) 25, Akt-p38 interaction, and decreased PTEN activity. Thus PTEN or Hsp25 could serve as potential therapeutic targets to modulate Akt activation and control p38 MAPK-mediated diabetic complications.
Collapse
Affiliation(s)
- Madhavi J Rane
- Department of Medicine, University of Louisville, Louisville, Kentucky 40202, USA.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Abstract
Recent studies have documented that remote organs are affected by ischemic injury to the kidney. Here we studied whether the liver also suffers damage during induction of renal ischemia-reperfusion in rats and compared this to bilateral nephrectomy. Hepatic levels of tumor necrosis factor-alpha increased significantly after 6 and 24 h of renal ischemia or nephrectomy. Malondialdehyde, an index of lipid peroxidation, increased while total glutathione was decreased in the liver in both the renal ischemia and nephrectomy groups, suggesting activation of oxidative stress. Expression of liver spermine-spermidine acetyl transferase, an enzyme upregulated in early phases of hepatic injury was significantly increased 6 h after either kidney ischemia or nephrectomy. Apoptosis was increased in hepatocytes 24 h after nephrectomy. We also found histological evidence of hepatocyte injury following both ischemia and bilateral nephrectomy. Infusion of reduced glutathione, before the induction of renal ischemia, significantly improved liver architecture and was associated with a reduction in hepatic malondialdehyde and serum alanine transaminase levels. Our study shows that acute kidney ischemia or renal failure activates oxidative stress and promotes inflammation, apoptosis, and tissue damage in hepatocytes.
Collapse
|
40
|
Wang Y, Pei DS, Ji HX, Xing SH. Protective effect of a standardized Ginkgo extract (ginaton) on renal ischemia/reperfusion injury via suppressing the activation of JNK signal pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2008; 15:923-931. [PMID: 18929474 DOI: 10.1016/j.phymed.2008.09.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2008] [Revised: 08/27/2008] [Accepted: 09/04/2008] [Indexed: 05/26/2023]
Abstract
A new standardized Ginkgo extract (ginaton) destined for i.v. injection was investigated in rats for its protective effect on renal ischemia/reperfusion injury. We report on the elucidation of the downstream mechanism of action of JNK on the renal ischemia/reperfusion injury, which can be explained as the decrease in JNK phosphorylation at 20 min and c-Jun phosphorylation (Ser63/73) at 3h after renal ischemia. At the same time, ginaton attenuated the increased expression of FasL at 3h and caspase3 immunoreactivity at 6h after renal ischemia. Furthermore, ginaton significantly decreased renal epithelial tubular cell apoptosis induced by renal ischemia/reperfusion, alleviating renal ischemia/reperfusion injury. These results cumulatively indicate that ginaton could suppress the JNK-c-Jun-FasL-caspase3 signaling cascade, protecting renal tubular epithelial cells against ischemia/reperfusion-induced apoptosis, which implies that antioxidants may be a potential and effective agent for prevention of the ischemic/reperfusion injury through the suppression extrinsic apoptotic signal pathway induced by JNK signal pathway.
Collapse
Affiliation(s)
- Yan Wang
- Department of Pharmacy, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221002, PR China
| | | | | | | |
Collapse
|
41
|
RLIP76 in defense of radiation poisoning. Int J Radiat Oncol Biol Phys 2008; 72:553-61. [PMID: 18793957 DOI: 10.1016/j.ijrobp.2008.06.1497] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2008] [Revised: 06/12/2008] [Accepted: 06/12/2008] [Indexed: 11/23/2022]
Abstract
PURPOSE To determine the role of RLIP76 in providing protection from radiation and chemotherapy. In the present report, we used RLIP76 to refer to both the mouse (Ralbp1) and the human (RLIP76) 76-kDa splice variant proteins (RLIP76) for convenience and to avoid confusion. In other reports, Ralbp1 refers to the mouse enzyme (encoded by the Ralbp1 gene), which is structurally and functionally homologous to RLIP76, the human protein encoded by the human RALBP1 gene. METHODS AND MATERIALS Median lethal dose studies were performed in RLIP76(-/-) and RLIP76(+/+) C57B mice after treatment with a single dose of RLIP76 liposomes 14 h after whole body radiation. The radiosensitivity of the cultured mouse embryonic fibroblasts and the effects of buthionine sulfoximine (BSO), amifostine, c-jun N-terminal kinase (JNK), protein kinase B (Akt), and MAPK/ERK kinase (MEK) were determined by colony-forming assays. Glutathione-linked enzyme activities were measured by spectrophotometric assays, glutathione by dithiobis-2-nitrobenzoic acid (DTNB), lipid hydroperoxides by iodometric titration, and aldehydes and metabolites by thiobarbitauric acid reactive substances and liquid chromatography-mass spectrometry (LCMS). RESULTS RLIP76(-/-) mice were significantly more sensitive to radiation than were the wild-type, and RLIP76 liposomes prolonged survival in a dose-dependent manner in both genotypes. The levels of 4-hydroxynonenal and glutathione-conjugate of 4-hydroxynonenal were significantly increased in RLIP76(-/-) tissues compared with RLIP76(+/+). RLIP76(-/-) mouse embryonic fibroblasts were markedly more radiosensitive than RLIP76(+/+) mouse embryonic fibroblasts, despite increased glutathione levels in the former. RLIP76 augmentation had a remarkably greater protective effect compared with amifostine. The magnitude of effects of RLIP76 loss on radiation sensitivity was greater than those caused by perturbations of JNK, MEK, or Akt, and the effects of RLIP76 loss could not be completely compensated for by modulating the levels of these signaling proteins. CONCLUSION The results of our study have shown that RLIP76 plays a central role in radiation resistance.
Collapse
|
42
|
Yang C, Kaushal V, Shah SV, Kaushal GP. Autophagy is associated with apoptosis in cisplatin injury to renal tubular epithelial cells. Am J Physiol Renal Physiol 2008; 294:F777-87. [DOI: 10.1152/ajprenal.00590.2007] [Citation(s) in RCA: 214] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Autophagy has emerged as another major “programmed” mechanism to control life and death much like “programmed cell death” is for apoptosis in eukaryotes. We examined the expression of autophagic proteins and formation of autophagosomes during progression of cisplatin injury to renal tubular epithelial cells (RTEC). Autophagy was detected as early as 2–4 h after cisplatin exposure as indicated by induction of LC3-I, conversion of LC3-I to LC3-II protein, and upregulation of Beclin 1 and Atg5, essential markers of autophagy. The appearance of cisplatin-induced punctated staining of autophagosome-associated LC3-II upon GFP-LC3 transfection in RTEC provided further evidence for autophagy. The autophagy inhibitor 3-methyladenine blocked punctated staining of autophagosomes. The staining of normal cells with acridine orange displayed green fluorescence with cytoplasmic and nuclear components in normal cells but displayed considerable red fluorescence in cisplatin-treated cells, suggesting formation of numerous acidic autophagolysosomal vacuoles. Autophagy inhibitors LY294002 or 3-methyladenine or wortmannin inhibited the formation of autophagosomes but induced apoptosis after 2–4 h of cisplatin treatment as indicated by caspase-3/7 and -6 activation, nuclear fragmentation, and cell death. This switch from autophagy to apoptosis by autophagic inhibitors further suggests that the preapoptotic lag phase after treatment with cisplatin is mediated by autophagy. At later stages of cisplatin injury, apoptosis was also found to be associated with autophagy, as autophagic inhibitors and inactivation of autophagy proteins Beclin 1 and Atg5 enhanced activation of caspases and apoptosis. Our results demonstrate that induction of autophagy mounts an adaptive response, suppresses cisplatin-induced apoptosis, and prolongs survival of RTEC.
Collapse
|
43
|
Goodman AI, Olszanecki R, Yang LM, Quan S, Li M, Omura S, Stec DE, Abraham NG. Heme oxygenase-1 protects against radiocontrast-induced acute kidney injury by regulating anti-apoptotic proteins. Kidney Int 2007; 72:945-53. [PMID: 17667987 DOI: 10.1038/sj.ki.5002447] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Radiocontrast agents are thought to induce acute kidney injury in part through increased production of reactive oxygen species and increased cellular apoptosis. In this study we determined whether heme oxygenase-1 could prevent or reduce radiocontrast-induced acute kidney injury and, if so, what were the mechanisms by which this can occur. Sodium iothalamate was administered to uninephrectomized, salt-depleted male Sabra rats to initiate acute kidney injury. Heme oxygenase-1 was induced with cobalt protoporphyrin or inhibited with stannous mesoporphyrin. Inhibition of heme oxygenase exacerbated kidney injury as measured by an increase in plasma creatinine and in superoxide production. Heme oxygenase-1 induction prevented the increase in plasma creatinine and in superoxide in both the cortex and medulla compared to untreated rats with acute kidney injury. This protective effect of heme oxygenase-1 was associated with increased anti-apoptotic proteins Bcl-2 and Bcl-xl and a decrease of pro-apoptotic caspase-3 and caspase-9 along with increased expression of inactive BAX. Our study suggests that increased levels of heme oxygenase-1 are protective against acute kidney injury due to radiocontrast exposure.
Collapse
Affiliation(s)
- A I Goodman
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Zaheer A, Sahu SK, Ryken TC, Traynelis VC. Cis-parinaric acid effects, cytotoxicity, c-Jun N-terminal protein kinase, forkhead transcription factor and Mn-SOD differentially in malignant and normal astrocytes. Neurochem Res 2006; 32:115-24. [PMID: 17160503 DOI: 10.1007/s11064-006-9236-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Accepted: 11/20/2006] [Indexed: 11/27/2022]
Abstract
Cis-parinaric acid (c-PNA), a natural four conjugated polyunsaturated fatty acid, increases free radical production and it is preferentially cytotoxic to malignant glial cells compared to normal astrocytes in-vitro. In order to explain the increased cytotoxicity of c-PNA in malignant glial cells, we compared the effects of c-PNA on the oxidative stress-dependent signal transducing events in 36B10 cells, a malignant rat astrocytoma cell line, and in fetal rat astrocytes. Our results show that c-PNA treatment in 36B10 cells caused a persistent activation of c-Jun N-terminal protein kinase (JNK) at RNA and protein levels. Specific inhibitors of the kinase significantly reversed the cytotoxicity of c-PNA. Additionally, c-PNA caused the phosphorylated inactivation of forkhead transcription factor-3a (FKHR-L1, FOXO3a) and drastically decreased the activity of mitochondrial superoxide dismutase (Mn-SOD) that protects cells from oxidative stress. On the other hand, identical c-PNA treatments in normal astrocytes increased the dephosphorylated activation of FKHR-L1, maintained activity of Mn-SOD and failed to phosphorylate JNK. Taken together, the results imply that a selective activation of JNK and the opposite regulation of FKHR-L1 and Mn-SOD contribute to the differential cytotoxicity of c-PNA in malignant and normal glial cells.
Collapse
Affiliation(s)
- Ayesha Zaheer
- Department of Neurosurgery, University of Iowa Hospital and Clinics, Iowa, IA 52242, USA
| | | | | | | |
Collapse
|
45
|
Zhuang S, Yan Y, Daubert RA, Han J, Schnellmann RG. ERK promotes hydrogen peroxide-induced apoptosis through caspase-3 activation and inhibition of Akt in renal epithelial cells. Am J Physiol Renal Physiol 2006; 292:F440-7. [PMID: 16885155 DOI: 10.1152/ajprenal.00170.2006] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Reactive oxygen species, including hydrogen peroxide (H(2)O(2)), are generated during ischemia-reperfusion and are critically involved in acute renal failure. The present studies examined the role of the extracellular signal-regulated kinase (ERK) pathway in H(2)O(2)-induced renal proximal tubular cells (RPTC) apoptosis. Exposure of RPTC to 1 mM H(2)O(2) resulted in apoptosis and activation of ERK1/2 and Akt. Pretreatment with the specific MEK inhibitors, U0126 and PD98059, or adenoviral infection with a construct that encodes a negative mutant of MEK1, protected cells against H(2)O(2)-induced apoptosis. In contrast, expression of constitutively active MEK1 enhanced H(2)O(2)-induced apoptosis. H(2)O(2) induced activation of caspase-3 and phosphorylation of histone H2B at serine 14, a posttranslational modification required for nuclear condensation, which also were blocked by ERK1/2 inhibition. Furthermore, blockade of ERK1/2 resulted in an increase in Akt phosphorylation and blockade of Akt potentiated apoptosis and diminished the protective effect conferred by ERK inhibition in H(2)O(2)-treated cells. Although Z-DEVD-FMK, a caspase-3 inhibitor, was able to inhibit histone H2B phosphorylation and apoptosis, it did not affect ERK1/2 phosphorylation. We suggest that ERK elicits apoptosis in epithelial cells by activating caspase-3 and inhibiting Akt pathways and elicits nuclear condensation through caspase-3 and histone H2B phosophorylation during oxidant injury.
Collapse
Affiliation(s)
- Shougang Zhuang
- Dept. of Pharmaceutical Sciences, Medical Univ. of South Carolina, 280 Calhoun St., POB 250140, Charleston, SC 29425, USA.
| | | | | | | | | |
Collapse
|
46
|
Albright CD, Klem E, Shah AA, Gallagher P. Breast cancer cell-targeted oxidative stress: enhancement of cancer cell uptake of conjugated linoleic acid, activation of p53, and inhibition of proliferation. Exp Mol Pathol 2005; 79:118-25. [PMID: 15992797 DOI: 10.1016/j.yexmp.2005.05.005] [Citation(s) in RCA: 209] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2005] [Accepted: 05/18/2005] [Indexed: 11/20/2022]
Abstract
We investigated the mechanism of inhibition of cell proliferation by mixed isomers of CLA (9-cis, 11-trans CLA; 10-trans, 12-cis CLA) on human, non-tumorigenic MCF10A cells that were derived from mammary ductal epithelial cells and MCF7 cells that were derived from a well differentiation mammary adenocarcinoma. When treated in the log phase of growth, the uptake of CLA by MCF7 exceeded the levels measured in MCF10A cells. Treatment with CLA in the presence of HPO doubled the incorporation of CLA in MCF7 cells, independent of the isomer, but reduced the incorporation of CLA by MCF10A cells. CLA caused tumor cell-targeted increased expression of 4-hydroxy-2-nonenal (4HNE), a product of lipid peroxidation, and decreased proliferation in MCF7 cells, as measured by the incorporation of bromodeoxyuridine (BrdU) and expression of phosphorylated histone H3, and the effects of CLA in combination with HPO on mitosis were greater than the effects of either agent alone. Decreased cell proliferation in CLA-treated MCF7 cells coincided with increased nuclear localization of phosphorylated, activated p53 protein, and decreased nuclear localization of the transcription factor FKHRSer256. Importantly, CLA-treated MCF7 cells were more sensitive than MCF10A cells to HPO-induced 4HNE, expression of p53, and decreased mitotic activity. These studies suggest that tumor cell-targeted increased sensitivity to oxidative stress and activation of p53 play important roles in the regulation of human breast cancer cell proliferation by CLA.
Collapse
Affiliation(s)
- Craig D Albright
- Department of Nutrition, McGavran-Greenberg Building, School of Public Health and School of Medicine, University of North Carolina, Chapel Hill, NC 27599-7461, USA.
| | | | | | | |
Collapse
|
47
|
Dasmahapatra G, Rahmani M, Dent P, Grant S. The tyrphostin adaphostin interacts synergistically with proteasome inhibitors to induce apoptosis in human leukemia cells through a reactive oxygen species (ROS)-dependent mechanism. Blood 2005; 107:232-40. [PMID: 16166589 PMCID: PMC1895354 DOI: 10.1182/blood-2005-06-2302] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Interactions between the tyrphostin adaphostin and proteasome inhibitors (eg, MG-132 and bortezomib) were examined in multiple human leukemia cell lines and primary acute myeloid leukemia (AML) specimens. Cotreatment of Jurkat cells with marginally toxic concentrations of adaphostin and proteasome inhibitors synergistically potentiated mitochondrial damage (eg, cytochrome c release), caspase activation, and apoptosis. Similar interactions occurred in other human leukemia cell types (eg, U937, HL-60, Raji). These interactions were associated with a marked increase in oxidative damage (eg, ROS generation), down-regulation of the Raf/MEK/ERK pathway, and JNK activation. Adaphostin/MG-132 lethality as well as mitochondrial damage, down-regulation of Raf/MEK/ERK, and activation of JNK were attenuated by the free-radical scavenger NAC, suggesting that oxidative damage plays a functional role in antileukemic effects. Ectopic expression of Raf-1 or constitutively active MEK/ERK or genetic interruption of the JNK pathway significantly diminished adaphostin/MG-132-mediated lethality. Interestingly, enforced Raf or MEK/ERK activation partially diminished adaphostin/MG-132-mediated ROS generation, suggesting the existence of an amplification loop. Finally, the adaphostin/MG-132 regimen displayed similar toxicity toward 5 primary AML samples but not normal hematopoietic progenitors (eg, bone marrow CD34+ cells). Collectively, these findings suggest that potentiating oxidative damage by combining adaphostin with proteasome inhibitors warrants attention as an antileukemic strategy.
Collapse
|
48
|
Beierle EA, Nagaram A, Dai W, Iyengar M, Chen MK. VEGF-mediated survivin expression in neuroblastoma cells. J Surg Res 2005; 127:21-8. [PMID: 15882878 DOI: 10.1016/j.jss.2005.03.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2004] [Revised: 03/07/2005] [Accepted: 03/11/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) up-regulates a number of cellular survival signals in endothelial cells. We hypothesize that VEGF will up-regulate survivin, a member of the IAP family of anti-apoptotic proteins, via the PI3K/Akt cell signaling pathway in human neuroblastoma cells. MATERIALS AND METHODS IMR-32 human neuroblastoma cells are cultured with VEGF at varying times and in escalating doses. A specific inhibitor of PI3-kinase, LY294002, is used to block Akt phosphorylation. Immunoblot is used to measure protein expression, and Hoechst staining is used to detect apoptosis. RESULTS Stimulation of IMR-32 neuroblastoma cells with VEGF results in an increase in survivin protein expression in both a dose- and a time-dependent fashion. Akt phosphorylation is also increased after stimulation with exogenous VEGF. Blockade of Akt phosphorylation with LY294002 abrogates the effects of VEGF upon survivin and phosphorylated Akt protein expression. CONCLUSIONS VEGF has been shown to up-regulate a number of survival signals in endothelial cells. We have found that exposure of human neuroblastoma cells to exogenous VEGF results in an increased expression of survivin protein and phosphorylated Akt, and inhibition of PI3-kinase abrogates those effects. It appears that VEGF is important for promotion of neuroblastoma cellular survival through the up-regulation of survival proteins, and not only through its angiogenic properties.
Collapse
Affiliation(s)
- Elizabeth A Beierle
- Department of Surgery, University of Florida, Gainesville, Florida 32610-0286, USA.
| | | | | | | | | |
Collapse
|