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Tung KL, Wu SZ, Yang CC, Chang HY, Chang CS, Wang YH, Huang BM, Lan YY. Cordycepin Induces Apoptosis through JNK-Mediated Caspase Activation in Human OEC-M1 Oral Cancer Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:1842363. [PMID: 38023774 PMCID: PMC10667060 DOI: 10.1155/2022/1842363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 12/01/2023]
Abstract
Cordycepin, a bioactive compound extracted from Cordyceps sinensis, can induce apoptosis in human OEC-M1 oral cancer cells. However, the exact mechanism is still unclear. The present study aimed to investigate the underlying mechanism of cordycepin-induced apoptosis in OEC-M1 cells. Following treatment with cordycepin, apoptosis was examined and quantified using a DNA laddering assay and a cytokeratin 18 fragment enzyme-linked immunosorbent assay, respectively. Expressions of mitogen-activated protein kinases (MAPKs) and apoptosis-related proteins were detected by the western blot analysis. Our results show that a pan-caspase inhibitor, Z-VAD-FMK, could significantly inhibit cordycepin-induced apoptosis in OEC-M1 cells. In addition, treatment with cordycepin not only activated caspase-8, caspase-9, and caspase-3 but also induced Bid and poly ADP-ribose polymerase cleavages. Furthermore, cordycepin also induced the activation of c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase, and p38 MAPKs. Among MAPKs, activation of JNK solely contributed to cordycepin-induced apoptosis with the activation of caspase-8, caspase-9, and caspase-3 and cleavage of PARP. Taken together, the present study demonstrated that cordycepin activated JNK and caspase pathways to induce apoptosis in OEC-M1 cells.
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Affiliation(s)
- Kuo-Lung Tung
- Department of Oral Hygiene, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Su-Zhen Wu
- Department of Anesthesia, Chi-Mei Medical Center, Liouying, Tainan 73657, Taiwan
- Department of Nursing, Min-Hwei Junior College of Health Care Management, Tainan 73658, Taiwan
| | - Chun-Chuan Yang
- Department of Dental Technology, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan
| | - Hong-Yi Chang
- Department of Biotechnology and Food Technology, College of Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan
| | - Chun-Sheng Chang
- Department of Biotechnology and Food Technology, College of Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan
| | - Yan-Hsiung Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Orthopaedic Research Center, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Bu-Miin Huang
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yu-Yan Lan
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
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2
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Ketogenic diet inhibits tumor growth by enhancing immune response, attenuating immunosuppression, inhibiting angiogenesis and EMT in CT26 colon tumor allografts mouse model. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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3
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Lan YY, Chen YH, Liu C, Tung KL, Wu YT, Lin SC, Wu CH, Chang HY, Chen YC, Huang BM. Role of JNK activation in paclitaxel-induced apoptosis in human head and neck squamous cell carcinoma. Oncol Lett 2021; 22:705. [PMID: 34457060 PMCID: PMC8358625 DOI: 10.3892/ol.2021.12966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 05/18/2021] [Indexed: 12/12/2022] Open
Abstract
It has been reported that paclitaxel activates cell cycle arrest and increases caspase protein expression to induce apoptosis in head and neck squamous cell carcinoma (HNSCC) cell lines. However, the potential signaling pathway regulating this apoptotic phenomenon remains unclear. The present study used OEC-M1 cells to investigate the underlying molecular mechanism of paclitaxel-induced apoptosis. Following treatment with paclitaxel, cell viability was assessed via the MTT assay. Necrosis, apoptosis, cell cycle and mitochondrial membrane potential (∆Ψm) were analyzed via flow cytometric analyses, respectively. Western blot analysis was performed to detect the expression levels of proteins associated with the MAPK and caspase signaling pathways. The results demonstrated that low-dose paclitaxel (50 nM) induced apoptosis but not necrosis in HNSCC cells. In addition, paclitaxel activated the c-Jun N-terminal kinase (JNK), but not extracellular signal-regulated kinase or p38 mitogen-activated protein kinase. The paclitaxel-activated JNK contributed to paclitaxel-induced apoptosis, activation of caspase-3, -6, -7, -8 and -9, and reduction of ∆Ψm. In addition, caspase-8 and -9 inhibitors, respectively, significantly decreased paclitaxel-induced apoptosis. Notably, Bid was truncated following treatment with paclitaxel. Taken together, the results of the present study suggest that paclitaxel-activated JNK is required for caspase activation and loss of ∆Ψm, which results in apoptosis of HNSCC cells. These results may provide mechanistic basis for designing more effective paclitaxel-combining regimens to treat HNSCC.
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Affiliation(s)
- Yu-Yan Lan
- Department of Physical Therapy, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan, R.O.C
| | - Ying-Hui Chen
- Department of Anesthesia, Chi-Mei Medical Center, Liouying, Tainan 73657, Taiwan, R.O.C
| | - Cheng Liu
- Department of Optometry, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan, R.O.C.,Department of Health and Beauty, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan, R.O.C
| | - Kuo-Lung Tung
- Department of Optometry, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan, R.O.C
| | - Yen-Ting Wu
- Department of Pathology, Golden Hospital, Pingtung 90049, Taiwan, R.O.C
| | - Sheng-Chieh Lin
- Department of Optometry, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan, R.O.C
| | - Chin-Han Wu
- Department of Optometry, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan, R.O.C
| | - Hong-Yi Chang
- Department of Biotechnology and Food Technology, College of Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan, R.O.C
| | - Yung-Chia Chen
- Department of Anatomy, School of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, R.O.C
| | - Bu-Miin Huang
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan, R.O.C.,Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan, R.O.C
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4
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Wang L, Zhu Z, Han L, Zhao L, Weng J, Yang H, Wu S, Chen K, Wu L, Chen T. A curcumin derivative, WZ35, suppresses hepatocellular cancer cell growthviadownregulating YAP-mediated autophagy. Food Funct 2019; 10:3748-3757. [PMID: 31172987 DOI: 10.1039/c8fo02448k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
HCC is a common cancer type in the world. Here, we found WZ35, a novel derivative of curcumin, could notably suppress HCC cell growthviainhibiting YAP controlled autophagy, highlighting the potent anti-tumor activity of WZ35 in liver cancer therapy.
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Affiliation(s)
- Lihua Wang
- School of Ophthalmology and Optometry
- Eye Hospital
- Wenzhou Medical University
- Wenzhou 325000
- China
| | - Zheng Zhu
- Laboratory Animal Centre
- Wenzhou Medical University
- Wenzhou
- China
| | - Lei Han
- Laboratory Animal Centre
- Wenzhou Medical University
- Wenzhou
- China
| | - Liqian Zhao
- Laboratory Animal Centre
- Wenzhou Medical University
- Wenzhou
- China
| | - Jialei Weng
- Laboratory Animal Centre
- Wenzhou Medical University
- Wenzhou
- China
| | - Hongbao Yang
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province
- The First Affiliated Hospital of Wenzhou Medical University
- Wenzhou 325000
- China
| | - Shijia Wu
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province
- The First Affiliated Hospital of Wenzhou Medical University
- Wenzhou 325000
- China
| | - Kaiyuan Chen
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province
- The First Affiliated Hospital of Wenzhou Medical University
- Wenzhou 325000
- China
| | - Liang Wu
- Department of Pathology
- First Affiliated Hospital of WenZhou Medical University
- Wenzhou 325000
- China
| | - Tongke Chen
- Laboratory Animal Centre
- Wenzhou Medical University
- Wenzhou
- China
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5
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Wang L, Han L, Tao Z, Zhu Z, Han L, Yang Z, Wang H, Dai D, Wu L, Yuan Z, Chen T. The curcumin derivative WZ35 activates ROS-dependent JNK to suppress hepatocellular carcinoma metastasis. Food Funct 2018; 9:2970-2978. [PMID: 29766185 DOI: 10.1039/c8fo00314a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Tumor metastasis is the leading cause of cancer death; due to the progress made in the elucidation of the mechanism of cancer cell metastasis, there is hope for patients with severe stages of cancer. Curcumin, as a novel anti-cancer drug, has been applied in cancer therapy; however, the toxicity of curcumin hinders its application. Herein, we constructed a novel derivative, WZ35, and evaluated its metastatic inhibition properties in vitro and in vivo. CCK-8 assay was performed to evaluate the tumor suppressive activity of WZ35. Cell apoptosis was detected by flow cytometry analysis. Transwell cell migration assay and RTCA were used to detect cell migration in mock and WZ35-treated cells. Western blotting was performed to analyze molecular alteration with different treatments. In this study, we found that curcumin and its derivative WZ35 could dramatically suppress proliferation, invasion, and migration of the hepatocellular HCCLM3, HepG2, and Huh7 cancer cells. Moreover, the cancer cell metastatic markers MMP-2, MMP-9, and N-cadherin were decreased, and E-cadherin was up-regulated. In addition, our data show that WZ35 promotes ROS-dependent JNK activation that is essential for WZ35-caused cell metastasis suppression. Moreover, the NAC and JNK inhibitor SP600125 could dramatically reverse WZ35-caused MMP-2, MMP-9, and N-cadherin reduction and E-cadherin up-regulation. We have also found that WZ35 exhibits powerful anti-metastasis activity of HCCLM3 in vivo. In conclusion, our data indicated that WZ35 could be a candidate for the treatment of metastatic liver cancer patients.
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Affiliation(s)
- Lihua Wang
- School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
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6
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Kooptiwut S, Kaewin S, Semprasert N, Sujjitjoon J, Junking M, Suksri K, Yenchitsomanus PT. Estradiol Prevents High Glucose-Induced β-cell Apoptosis by Decreased BTG2 Expression. Sci Rep 2018; 8:12256. [PMID: 30115961 PMCID: PMC6095866 DOI: 10.1038/s41598-018-30698-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/03/2018] [Indexed: 01/20/2023] Open
Abstract
Hyperglycemia stimulates several pathways to induce pancreatic β-cell apoptosis. In our previous study by mRNA analysis, we demonstrated that B-cell translocation gene 2 (BTG2) expression was up-regulated in INS-1 cells cultured under high glucose conditions, but this effect was reversed by estrogen. In the present study, we demonstrated that BTG2 mRNA and protein expressions in both INS-1 cells and mouse pancreatic islets increased under high glucose conditions compared to those cultured under basal glucose conditions, while in the presence of estrogen, the BTG2 mRNA and protein expressions decreased. SiRNA-BTG2 significantly reduced cell apoptosis, cleaved-caspase 3, and Bax, compared to the siRNA-control in INS-1 cultured under high glucose conditions. We further demonstrated that BTG2 promoter activity was activated under high glucose conditions whereas estrogen significantly reduced it. The effects of estrogen on BTG2 expression were inhibited by estrogen receptor inhibitors. Also, under high glucose conditions, p53 and Bax mRNA and protein expressions increased, but they decreased in the presence of estrogen. Again, the effect of estrogen on p53 and Bax expression was inhibited by estrogen receptor inhibitors. Taken together, this study demonstrates that estrogen reduces pancreatic β-cell apoptosis under high glucose conditions via suppression of BTG2, p53, and Bax expressions.
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Affiliation(s)
- Suwattanee Kooptiwut
- Department of Physiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.
| | - Suchada Kaewin
- Department of Physiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Namoiy Semprasert
- Department of Physiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Jatuporn Sujjitjoon
- Division of Molecular Medicine, Research Department, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Mutita Junking
- Division of Molecular Medicine, Research Department, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Kanchana Suksri
- Department of Physiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Pa-Thai Yenchitsomanus
- Division of Molecular Medicine, Research Department, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
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7
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Ren B, Li D, Si L, Ding Y, Han J, Chen X, Zheng Q. Alteronol induces cell cycle arrest and apoptosis via increased reactive oxygen species production in human breast cancer T47D cells. J Pharm Pharmacol 2018; 70:516-524. [DOI: 10.1111/jphp.12879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
Abstract
Abstract
Objective
Emerging evidence showed that alteronol has a potential antitumour effect in several tumour cells. However, the antitumour effect of alteronol on breast cancer has not been reported. This study investigated the mechanisms of alteronol-induced cell proliferation inhibition in human breast cancer T47D cells.
Methods
After treatment with alteronol, T47D cell proliferation was examined by MTT assay. The cell cycle distribution, cell apoptosis, reactive oxygen species level and mitochondrial membrane potential were evaluated via flow cytometry. Next, the protein levels of cyclin B1, cdc2, p21, p-cyclin B1, p-cdc2, p53, Bax, Bcl-2 and cytochrome c were analysed using Western blot analysis. Meanwhile, the mRNA levels of cyclin B1, cdc2, p21 and p53 were examined by qRT-PCR.
Key findings
Our data showed that alteronol inhibited the proliferation of T47D cells via inducing G2-phase arrest and cell apoptosis. Compared with control group, alteronol significantly increased ROS level and triggered mitochondrial dysfunction in alteronol-treated T47D cells. Further studies showed that the mRNA and protein levels of cdc2 and cyclin B1 were downregulated, while the mRNA and protein levels of p21, p53, p-cyclin B1, p-cdc2 and cytochrome c were upregulated. In addition, the expression level of Bax was increased, and the expression level of Bcl-2 was decreased.
Conclusions
Alteronol induced T47D cell cycle arrest and cell apoptosis through increasing ROS production and triggering mitochondrial dysfunction, and subsequently inhibiting T47D cell proliferation.
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Affiliation(s)
- Boxue Ren
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, Xinjiang, China
| | - Defang Li
- School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, Shandong, China
| | - Lingling Si
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, Xinjiang, China
| | - Yangfang Ding
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, Xinjiang, China
| | - Jichun Han
- School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, Shandong, China
| | - Xiaoyu Chen
- School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, Shandong, China
| | - Qiusheng Zheng
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, Xinjiang, China
- School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, Shandong, China
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Thomas P, Pang Y, Dong J. Membrane androgen receptor characteristics of human ZIP9 (SLC39A) zinc transporter in prostate cancer cells: Androgen-specific activation and involvement of an inhibitory G protein in zinc and MAP kinase signaling. Mol Cell Endocrinol 2017; 447:23-34. [PMID: 28219737 DOI: 10.1016/j.mce.2017.02.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/14/2017] [Accepted: 02/14/2017] [Indexed: 11/29/2022]
Abstract
Characteristics of novel human membrane androgen receptor (mAR), ZIP9 (SLC39A9), were investigated in ZIP9-transfected PC-3 cells (PC3-ZIP9). Ligand blot analysis showed plasma membrane [3H]-T binding corresponds to the position of ZIP9 on Western blots which suggests ZIP9 can bind [3H]-T alone, without a protein partner. Progesterone antagonized testosterone actions, blocking increases in zinc, Erk phosphorylation and apoptosis, further evidence that ZIP9 is specifically activated by androgens. Pre-treatment with GTPγS and pertussis toxin decreased plasma membrane [3H]-T binding and blocked testosterone-induced increases in Erk phosphorylation and intracellular zinc, indicating ZIP9 is coupled to an inhibitory G protein (Gi) that mediates both MAP kinase and zinc signaling. Testosterone treatment of nuclei and mitochondria which express ZIP9 decreased their zinc contents, suggesting ZIP9 also regulates free zinc through releasing it from these intracellular organelles. The results show ZIP9 is a specific Gi coupled-mAR mediating testosterone-induced MAP kinase and zinc signaling in PC3-ZIP9 cells.
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Affiliation(s)
- Peter Thomas
- University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX, 78373, USA.
| | - Yefei Pang
- University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX, 78373, USA
| | - Jing Dong
- University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX, 78373, USA
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9
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Wang L, Chen X, Du Z, Li G, Chen M, Chen X, Liang G, Chen T. Curcumin suppresses gastric tumor cell growth via ROS-mediated DNA polymerase γ depletion disrupting cellular bioenergetics. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:47. [PMID: 28359291 PMCID: PMC5374654 DOI: 10.1186/s13046-017-0513-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 03/10/2017] [Indexed: 02/08/2023]
Abstract
Background Curcumin, as a pro-apoptotic agent, is extensively studied to inhibit tumor cell growth of various tumor types. Previous work has demonstrated that curcumin inhibits cancer cell growth by targeting multiple signaling transduction and cellular processes. However, the role of curcumin in regulating cellular bioenergetic processes remains largely unknown. Methods Western blotting and qRT-PCR were performed to analyze the protein and mRNA level of indicated molecules, respectively. RTCA, CCK-8 assay, nude mice xenograft assay, and in vivo bioluminescence imaging were used to visualize the effects of curcmin on gastric cancer cell growth in vitro and in vivo. Seahorse bioenergetics analyzer was used to investigate the alteration of oxygen consumption and aerobic glycolysis rate. Results Curcumin significantly inhibited gastric tumor cell growth, proliferation and colony formation. We further investigated the role of curcumin in regulating cellular redox homeostasis and demonstrated that curcumin initiated severe cellular apoptosis via disrupting mitochondrial homeostasis, thereby enhancing cellular oxidative stress in gastric cancer cells. Furthermore, curcumin dramatically decreased mtDNA content and DNA polymerase γ (POLG) which contributed to reduced mitochondrial oxygen consumption and aerobic glycolysis. We found that curcumin induced POLG depletion via ROS generation, and POLG knockdown also reduced oxidative phosphorylation (OXPHOS) activity and cellular glycolytic rate which was partially rescued by ROS scavenger NAC, indiating POLG plays an important role in the treatment of gastric cancer. Data in the nude mice model verified that curcumin treatment significantly attenuated tumor growth in vivo. Finally, POLG was up-regulated in human gastric cancer tissues and primary gastric cancer cell growth was notably suppressed due to POLG deficiency. Conclusions Together, our data suggest a novel mechanism by which curcumin inhibited gastric tumor growth through excessive ROS generation, resulting in depletion of POLG and mtDNA, and the subsequent disruption of cellular bioenergetics.
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Affiliation(s)
- Lihua Wang
- Laboratory Animal Centre, Wenzhou Medical University, Wenzhou, Zhejiang, China.,State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health of the People's Republic of China, Zhejiang Provincial Key Laboratory of Ophthalmology and Optometry, Wenzhou, Zhejiang, China.,School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiwen Chen
- Laboratory Animal Centre, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhuanyun Du
- School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Gefei Li
- School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Mayun Chen
- Division of Pulmonary Medicine, The First Affiliated Hospital of Wenzhou Medical University, Key Laboratory of Heart and Lung, Wenzhou, China
| | - Xi Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China. .,Wenzhou Medical University, University-Town, Wenzhou, Zhejiang, 325035, China.
| | - Tongke Chen
- Laboratory Animal Centre, Wenzhou Medical University, Wenzhou, Zhejiang, China. .,Wenzhou Medical University, University-Town, Wenzhou, Zhejiang, 325035, China.
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Tsatsaronis JA, Walker MJ, Sanderson-Smith ML. Host responses to group a streptococcus: cell death and inflammation. PLoS Pathog 2014; 10:e1004266. [PMID: 25165887 PMCID: PMC4148426 DOI: 10.1371/journal.ppat.1004266] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Infections caused by group A Streptococcus (GAS) are characterized by robust inflammatory responses and can rapidly lead to life-threatening disease manifestations. However, host mechanisms that respond to GAS, which may influence disease pathology, are understudied. Recent works indicate that GAS infection is recognized by multiple extracellular and intracellular receptors and activates cell signalling via discrete pathways. Host leukocyte receptor binding to GAS-derived products mediates release of inflammatory mediators associated with severe GAS disease. GAS induces divergent phagocyte programmed cell death responses and has inflammatory implications. Epithelial cell apoptotic and autophagic components are mobilized by GAS infection, but can be subverted to ensure bacterial survival. Examination of host interactions with GAS and consequences of GAS infection in the context of cellular receptors responsible for GAS recognition, inflammatory mediator responses, and cell death mechanisms, highlights potential avenues for diagnostic and therapeutic intervention. Understanding the molecular and cellular basis of host symptoms during severe GAS disease will assist the development of improved treatment regimens for this formidable pathogen.
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Affiliation(s)
- James A. Tsatsaronis
- Illawarra Health and Medical Research Institute (IHMRI), School of Biological Sciences, University of Wollongong, Wollongong, New South Wales, Australia
| | - Mark J. Walker
- Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, University of Queensland, St. Lucia, Queensland, Australia
| | - Martina L. Sanderson-Smith
- Illawarra Health and Medical Research Institute (IHMRI), School of Biological Sciences, University of Wollongong, Wollongong, New South Wales, Australia
- * E-mail:
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11
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Lin W, Tongyi S. Role of Bax/Bcl-2 family members in green tea polyphenol induced necroptosis of p53-deficient Hep3B cells. Tumour Biol 2014; 35:8065-75. [PMID: 24839007 DOI: 10.1007/s13277-014-2064-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Accepted: 05/06/2014] [Indexed: 12/11/2022] Open
Abstract
Green tea polyphenol (GTP) is one of the most promising chemopreventive agent for cancer; it can inhibit cancer cell proliferation and induce apoptosis through p53-dependent cell signaling pathways. Unfortunately, many tumor cells lack the functional p53, and little is known about the effect of GTP on the p53-deficient/mutant cancer cells. To understand the p53-independent mechanisms in GTP-treated p53-dificient/mutant cancer cells, we have now examined GTP-induced cytotoxicity in human hepatoma Hep3B cells (p53-deficient). The results showed that GTP could induce Bax and Bak activation, cytochrome c release, caspase activation, and necroptosis of Hep3B cells. Bax and Bak, two key molecules of mitochondrial permeability transition pore (MPTP), were interdependently activated by GTP, with translocation and homo-oligomerization on the mitochondria. Bax and Bak induce cytochrome c release. Importantly, cytochrome c release and necroptosis were diminished in Hep3B cells (Bax(-/-)) and Hep3B cells (Bak(-/-)). Furthermore, overexpression of Bcl-2 could ameliorate GTP-induced cytochrome c release and necroptosis. Together, the findings suggested that GTP-induced necroptosis was modulated by the p53-independent pathway, which was related to the translocation of Bax and Bak to mitochondria, release of cytochrome c, and activation of caspases.
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Affiliation(s)
- Weiping Lin
- School of Pharmacy and Bioscience, Weifang Medical University, Weifang, 261000, Shandong Province, China,
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12
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Li Y, Wu Y, Guan Y, Wang Z, Zhang L. Hydroxysafflor yellow A induces apoptosis in MCF-7 cells by blocking NFκB/p65 pathway and disrupting mitochondrial transmembrane potential. RSC Adv 2014. [DOI: 10.1039/c4ra07417c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The molecular mechanisms and the possible effects of hydroxysafflor yellow A (HSYA) on the induction of apoptosis in the human breast cancer MCF-7 cells were investigated.
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Affiliation(s)
- YuYing Li
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - Yanzi Wu
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - Yingying Guan
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - ZhuanHua Wang
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
| | - Liwei Zhang
- Key Laboratory for Chemical Biology and Molecular Engineering of Ministry of Education
- Shanxi University
- Taiyuan, China
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Bhandary YP, Shetty SK, Marudamuthu AS, Ji HL, Neuenschwander PF, Boggaram V, Morris GF, Fu J, Idell S, Shetty S. Regulation of lung injury and fibrosis by p53-mediated changes in urokinase and plasminogen activator inhibitor-1. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 183:131-43. [PMID: 23665346 DOI: 10.1016/j.ajpath.2013.03.022] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 02/28/2013] [Accepted: 03/26/2013] [Indexed: 12/29/2022]
Abstract
Alveolar type II epithelial cell (ATII) apoptosis and proliferation of mesenchymal cells are the hallmarks of idiopathic pulmonary fibrosis, a devastating disease of unknown cause characterized by alveolar epithelial injury and progressive fibrosis. We used a mouse model of bleomycin (BLM)-induced lung injury to understand the involvement of p53-mediated changes in urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor-1 (PAI-1) levels in the regulation of alveolar epithelial injury. We found marked induction of p53 in ATII cells from mice exposed to BLM. Transgenic mice expressing transcriptionally inactive dominant negative p53 in ATII cells showed augmented apoptosis, whereas those deficient in p53 resisted BLM-induced ATII cell apoptosis. Inhibition of p53 transcription failed to suppress PAI-1 or induce uPA mRNA in BLM-treated ATII cells. ATII cells from mice with BLM injury showed augmented binding of p53 to uPA, uPA receptor (uPAR), and PAI-1 mRNA. p53-binding sequences from uPA, uPAR, and PAI-1 mRNA 3' untranslated regions neither interfered with p53 DNA binding activity nor p53-mediated promoter transactivation. However, increased expression of p53-binding sequences from uPA, uPAR, and PAI-1 mRNA 3' untranslated regions in ATII cells suppressed PAI-1 and induced uPA after BLM treatment, leading to inhibition of ATII cell apoptosis and pulmonary fibrosis. Our findings indicate that disruption of p53-fibrinolytic system cross talk may serve as a novel intervention strategy to prevent lung injury and pulmonary fibrosis.
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Affiliation(s)
- Yashodhar P Bhandary
- Texas Lung Injury Institute, Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Texas 75708, USA
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Yunlei Z, Zhe C, Yan L, Pengcheng W, Yanbo Z, Le S, Qianjin L. INMAP, a novel truncated version of POLR3B, represses AP-1 and p53 transcriptional activity. Mol Cell Biochem 2012; 374:81-9. [PMID: 23124897 DOI: 10.1007/s11010-012-1507-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 10/25/2012] [Indexed: 12/17/2022]
Abstract
INMAP was first identified as an interphase nucleus and mitotic apparatus-associated protein that plays essential roles in the formation of the spindle and cell-cycle progression. Here, we report that INMAP might be conserved from prokaryotes to humans, is a truncated version of the RNA polymerase III subunit B POLR3B, and is up-regulated in several human cancer cell lines including HeLa, Bel-7402, HepG2 and BGC-823. Deletion analysis revealed that the 209-290 amino-acid region is necessary for the punctate distribution of INMAP in the nucleus. Furthermore, over-expression of INMAP inhibited the transcriptional activities of p53 and AP-1 in a dose-dependent manner. These results suggest that INMAP may function through the p53 and AP-1 pathways, thus providing a possible link of its activity with tumourigenesis. Integrating our data and those in previous studies, it can be concluded that INMAP plays dual functional roles in the coordination of mitotic kinetics with gene expression as well as in cell-fate determination and proliferation.
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Affiliation(s)
- Zhou Yunlei
- Key Laboratory of Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, 100875, People's Republic of China
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Rosas-Trigueros JL, Correa-Basurto J, Benítez-Cardoza CG, Zamorano-Carrillo A. Insights into the structural stability of Bax from molecular dynamics simulations at high temperatures. Protein Sci 2011; 20:2035-46. [PMID: 21936009 DOI: 10.1002/pro.740] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 09/05/2011] [Accepted: 09/08/2011] [Indexed: 01/05/2023]
Abstract
Bax is a member of the Bcl-2 protein family that participates in mitochondrion-mediated apoptosis. In the early stages of the apoptotic pathway, this protein migrates from the cytosol to the outer mitochondrial membrane, where it is inserted and usually oligomerizes, making cytochrome c-compatible pores. Although several cellular and structural studies have been reported, a description of the stability of Bax at the molecular level remains elusive. This article reports molecular dynamics simulations of monomeric Bax at 300, 400, and 500 K, focusing on the most relevant structural changes and relating them to biological experimental results. Bax gradually loses its α-helices when it is submitted to high temperatures, yet it maintains its globular conformation. The resistance of Bax to adopt an extended conformation could be due to several interactions that were found to be responsible for maintaining the structural stability of this protein. Among these interactions, we found salt bridges, hydrophobic interactions, and hydrogen bonds. Remarkably, salt bridges were the most relevant to prevent the elongation of the structure. In addition, the analysis of our results suggests which conformational movements are implicated in the activation/oligomerization of Bax. This atomistic description might have important implications for understanding the functionality and stability of Bax in vitro as well as within the cellular environment.
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Affiliation(s)
- Jorge Luis Rosas-Trigueros
- SEPI de la ESCOM del Instituto Politécnico Nacional, Juan de Dios Bátiz y Miguel Othón de Mendizábal s/n, México DF, México
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Singhal NK, Srivastava G, Patel DK, Jain SK, Singh MP. Melatonin or silymarin reduces maneb- and paraquat-induced Parkinson's disease phenotype in the mouse. J Pineal Res 2011; 50:97-109. [PMID: 20964710 DOI: 10.1111/j.1600-079x.2010.00819.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oxidative stress is reported as one of the most widely accepted mechanisms of maneb (MB)- and paraquat (PQ)-induced nigrostriatal dopaminergic neurodegeneration leading to the Parkinson's disease (PD) phenotype. The study investigated the effects of silymarin, an antioxidant of plant origin, and melatonin, an indoleamine produced in all species, in MB- and PQ-induced mouse model of PD. The mice were treated intraperitoneally daily with silymarin (40mg/kg) or melatonin (30mg/kg) along with respective controls for 9wk. Subsets of these animals were also treated with MB (30mg/kg) and PQ (10mg/kg), twice a week, for 9wk, 2hr after silymarin/melatonin treatment. Locomotor activities along with striatal dopamine content, tyrosine hydroxylase (TH) immunoreactivity, number of degenerating neurons, lipid peroxidation and nitrite content were estimated. Additionally, mRNA expression of vesicular monoamine transporter, cytochrome P-450 2E1 (CYP2E1), and glutathione-S-transferase A4-4 (GSTA4-4), catalytic activities of CYP2E1 and GSTA4-4 and protein expressions of unphosphorylated and phosphorylated p53 (p53 and P-p53), Bax and caspase 9 were measured in control and MB- and PQ-treated mice with either silymarin or melatonin treatments. Silymarin/melatonin significantly offset MB- and PQ-mediated reductions in locomotor activities, dopamine content, TH immunoreactivity, VMAT 2 mRNA expression and the expression of p53 protein. Silymarin/melatonin attenuated the increases in lipid peroxidation, number of degenerating neurons, nitrite content, mRNA expressions of cytochrome P-450 2E1 (CYP2E1) and GSTA4-4, catalytic activities of CYP2E1 and GST and P-p53, Bax and caspase 9 protein expressions. The results demonstrate that silymarin and melatonin offer nigrostriatal dopaminergic neuroprotection against MB- and PQ-induced PD by the modulation of oxidative stress and apoptotic machinery.
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Affiliation(s)
- Naveen Kumar Singhal
- Indian Institute of Toxicology Research (Council of Scientific and Industrial Research), M. G. Marg, Lucknow, UP, India Jamia Hamdard, New Delhi, India
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