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Weng M, Deng Z, Huang S, Lin X, Xu N, Sun X, Wu W, Lu J, Wang D. Fraxetin inhibits proliferation and induces apoptosis of bladder cancer through the Akt pathway in vitro and in vivo. J Biochem Mol Toxicol 2024; 38:e23556. [PMID: 37867445 DOI: 10.1002/jbt.23556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/04/2023] [Accepted: 10/02/2023] [Indexed: 10/24/2023]
Abstract
Fraxetin, a natural compound extracted from the Chinese herb Cortex Fraxini, is reported to boast extensive antitumor properties in various cancers. However, whether fraxetin exhibited an anticancer effect on bladder cancer remains unknown. In this study, cell counting kit-8 was utilized to detect cell viability. Flow cytometry analysis was performed for cell apoptosis analysis. Western blot analysis and real-time PCR were used to ascertain gene expression analysis. A mouse bladder cancer xenograft model was established and subjected to fraxetin treatment. Fraxetin reduced the viability of bladder cancer cells, induced apoptosis in vitro, and inhibited the growth of bladder cancer in vivo. Fraxetin inhibited the Akt pathway in J82 cells. In conclusion, the growth inhibitory properties of fraxetin against bladder cancer may be mediated via an Akt inhibitory effect and cell apoptosis promotion.
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Affiliation(s)
- Mingfang Weng
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Zhen Deng
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Shuijing Huang
- Department of Neurosurgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xiaowen Lin
- Department of Vascular Surgery, Fujian Provincial People's Hospital, Fuzhou, China
| | - Na Xu
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Xinghui Sun
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Weizhen Wu
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Jun Lu
- Fujian Provincial Key Laboratory of Transplant Biology, Dongfang Hospital (900TH Hospital of Joint Logistics Support Force), Xiamen University, Fuzhou, China
| | - Dong Wang
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
- Fujian Provincial Key Laboratory of Transplant Biology, Dongfang Hospital (900TH Hospital of Joint Logistics Support Force), Xiamen University, Fuzhou, China
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2
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Tofigh P, Mirghazanfari SM, Hami Z, Nassireslami E, Ebrahimi M. The Investigation of Quercus Infectoria Gall Aqueous Extract Effect on the Cell Proliferation, Apoptosis and Expression of CCND1, TP53, BCL2 and BAX Genes in Cell Line of Lung, Gastric and Esophageal Cancers. Rep Biochem Mol Biol 2024; 12:596-608. [PMID: 39086589 PMCID: PMC11288232 DOI: 10.61186/rbmb.12.4.596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 06/09/2024] [Indexed: 08/02/2024]
Abstract
Background The therapeutic potential of Quercus infectoria (QI) gall, including its anti-inflammatory, antioxidant, and anticancer properties, is well-known. However, its impact on lung, gastric, and esophageal cancer cells remain unclear. This study aims to explore the effects of QI gall aqueous extract on cell viability, apoptosis, and gene expression in A549, BGC823, and KYSE-30 cell lines. Methods A549, BGC823, and KYSE-30 cells were seeded in complete medium and incubated with different concentrations of QI gall extract for 24 hours. Cell viability was measured by an MTT [3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide] assay. The induction of apoptosis was assessed through flow cytometric analysis after the adding FITC-conjugated Annexin V (Annexin V-FITC) and propidium iodide (PI). The mRNA expression levels of CCND1, TP53, BCL2 and BAX genes were determined using Real-time Quantitative Polymerase Chain Reaction analysis. Results The MTT assay demonstrated that treatment with QI gall extract significantly reduced the number of viable cells in the A549, BGC823, and KYSE-30 cell lines at IC50 concentrations of 440.1, 437.1, and 465.2 mg/ml, respectively. Additionally, compared to untreated cell population, the percentages of early apoptosis, late apoptosis, and necrosis in the A549, BGC823, and KYSE-30 cells significantly increased following treatment with QI gall extract (P< 0.05). Also, the treatment with QI gall extract influenced the expression of CCND1, TP53, BCL2 and BAX genes. Conclusions The present findings indicated that the gall extract of QI can inhibit the growth of A549, BGC823, and KYSE-30 cells by inducing apoptosis, which may be mediated via mitochondria-dependent pathway.
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Affiliation(s)
- Pouya Tofigh
- Toxicology Research Center, AJA University of Medical Sciences, Tehran, Iran.
| | | | - Zahra Hami
- Toxicology Research Center, AJA University of Medical Sciences, Tehran, Iran.
| | - Ehsan Nassireslami
- Toxicology Research Center, AJA University of Medical Sciences, Tehran, Iran.
| | - Mohsen Ebrahimi
- Toxicology Research Center, AJA University of Medical Sciences, Tehran, Iran.
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3
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Osman NA, El-Sayed NS, Abdel Fattah HA, Almalki AJ, Kammoun AK, Ibrahim TS, Alharbi AS, Al-Mahmoudy AM. Design, Synthesis and Anticancer Evaluation of New 1-allyl-4-oxo-6-(3,4,5- trimethoxyphenyl)-1,4-dihydropyrimidine-5-carbonitrile Bearing Pyrazole Moieties. Curr Org Synth 2023; 20:897-909. [PMID: 36941818 DOI: 10.2174/1570179420666230320153649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/09/2023] [Accepted: 01/17/2023] [Indexed: 03/23/2023]
Abstract
AIM pyrimidine and pyrazole have various biological and pharmaceutical applications such as antibacterial, antifungal, antileishmanial, anti-inflammatory, antitumor, and anti-cancer. INTRODUCTION In this search, the goal is to prepare pyrimidine-pyrazoles and study their anticancer activity. METHODS 1-allyl-4-oxo-6-(3,4,5-trimethoxyphenyl)-1,4-dihydropyrimidine-5-carbonitrile bearing pyrazoles (4,6-8) have been synthesized. Firstly, the reaction of 1-allyl-2-(methylthio)-4-oxo-6- (3,4,5-trimethoxyphenyl)-1,4-dihydropyrimidine-5-carbonitrile (1) with chalcones 2a-b produced the intermediates 3a-b. The latter was reacted with hydrazine hydrate to give the targets 4a-b. On the other hand, hydrazinolysis of compound 1 yielded the hydrazino derivative 5 which upon reaction with chalcones 2c-i or 1,3-bicarbonyl compounds afforded the compounds 6-8. Finally, the new compounds were characterized by spectral data (IR, 1H NMR, 13C NMR) and elemental analysis. Moreover, they were evaluated for Panc-1, MCF-7, HT-29, A-549, and HPDE cell lines as anticancer activity. RESULTS All the tested compounds 3,4,6-8 showed IC50 values > 50 μg/mL against the HPDE cell line. Compounds 6a and 6e exhibited potent anticancer activity where the IC50 values in the range of 1.7- 1.9, 1.4-182, 1.75-1.8, and 1.5-1.9 μg/mL against Panc-1, MCF-7, HT-29, and A-549 cell lines. CONCLUSION New pyrimidine-pyrazole derivatives were simply synthesized, in addition, some of them showed potential anticancer activity.
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Affiliation(s)
- Nermine A Osman
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig, University, Zagazig, 44519, Egypt
| | - Nermine S El-Sayed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig, University, Zagazig, 44519, Egypt
- Mansoura University Hospital, Mansoura University, Mansoura, Egypt
| | - Hanan A Abdel Fattah
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig, University, Zagazig, 44519, Egypt
| | - Ahmad J Almalki
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ahmed K Kammoun
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Tarek S Ibrahim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Abdulrahman S Alharbi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Amany M Al-Mahmoudy
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig, University, Zagazig, 44519, Egypt
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4
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Nemr MT, Teleb MI, AboulMagd AM, El-Naggar ME, Gouda N, Abdel-Ghany A, Elshaier YA. Design, synthesis and chemoinformatic studies of new thiazolopyrimidine derivatives as potent anticancer agents via phosphodiesterase-5 inhibition and apoptotic inducing activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Sodium selenite inhibits proliferation and metastasis through ROS-mediated NF-κB signaling in renal cell carcinoma. BMC Cancer 2022; 22:870. [PMID: 35945549 PMCID: PMC9364612 DOI: 10.1186/s12885-022-09965-8] [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: 05/09/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
Background Sodium selenite (SSE) has been reported to exert anti-tumor effects in several cancer cells. However, the underlying mechanisms in renal cancer are yet to be elucidated. The effects of SSE on the proliferation, metastasis, and apoptosis of renal cancer cells, as well as its mechanism, were investigated in this study. Methods ACHN and 786-O renal cancer cells were treated with different concentrations of SSE, MTT, and colony formation assays were used to detect the proliferation ability of cells. The migration of cells was detected using scratch-wound-healing and transwell-migration assays. The effect of SSE on apoptosis was assessed by AnnexinV-FITC/PI double staining. Besides, Western blotting was employed to detect the protein-expression level and elucidate the underlying pathways. We also made subcutaneous xenografts in athymic mice to verify the effect of SSE on tumor growth in vivo. Results Our results demonstrated that treatment with SSE resulted in significant inhibition of cell proliferation and migration. Flow cytometry and Western blot confirmed that SSE induced apoptosis via the endogenous apoptotic pathway. We also confirmed that SSE treatment causes an increase in intracellular reactive oxygen species (ROS) levels, resulting in the inhibition of nuclear transcription factor-κB (NF-κB) signaling. Modulation of the ROS level by the chemical inhibitor N-acetyl-cysteine reversed the effect of SSE on cells. Similarly, subcutaneous xenografts in athymic mice models showed that SSE inhibits tumor growth in vivo. Conclusion These results indicate that SSE inhibits proliferation and migration and induces apoptosis via ROS mediated inhibition of NF-κB signaling in renal cancer cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-09965-8.
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Wang W, Sun Y, Liu X, Kumar SK, Jin F, Dai Y. Dual-Targeted Therapy Circumvents Non-Genetic Drug Resistance to Targeted Therapy. Front Oncol 2022; 12:859455. [PMID: 35574302 PMCID: PMC9093074 DOI: 10.3389/fonc.2022.859455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/14/2022] [Indexed: 02/05/2023] Open
Abstract
The introduction of various targeted agents into the armamentarium of cancer treatment has revolutionized the standard care of patients with cancer. However, like conventional chemotherapy, drug resistance, either preexisting (primary or intrinsic resistance) or developed following treatment (secondary or acquired resistance), remains the Achilles heel of all targeted agents with no exception, via either genetic or non-genetic mechanisms. In the latter, emerging evidence supports the notion that intracellular signaling pathways for tumor cell survival act as a mutually interdependent network via extensive cross-talks and feedback loops. Thus, dysregulations of multiple signaling pathways usually join forces to drive oncogenesis, tumor progression, invasion, metastasis, and drug resistance, thereby providing a basis for so-called "bypass" mechanisms underlying non-genetic resistance in response to targeted agents. In this context, simultaneous interruption of two or more related targets or pathways (an approach called dual-targeted therapy, DTT), via either linear or parallel inhibition, is required to deal with such a form of drug resistance to targeted agents that specifically inhibit a single oncoprotein or oncogenic pathway. Together, while most types of tumor cells are often addicted to two or more targets or pathways or can switch their dependency between them, DTT targeting either intrinsically activated or drug-induced compensatory targets/pathways would efficiently overcome drug resistance caused by non-genetic events, with a great opportunity that those resistant cells might be particularly more vulnerable. In this review article, we discuss, with our experience, diverse mechanisms for non-genetic resistance to targeted agents and the rationales to circumvent them in the treatment of cancer, emphasizing hematologic malignancies.
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Affiliation(s)
- Wei Wang
- Laboratory of Cancer Precision Medicine, The First Hospital of Jilin University, Changchun, China
| | - Yue Sun
- Laboratory of Cancer Precision Medicine, The First Hospital of Jilin University, Changchun, China
| | - Xiaobo Liu
- Laboratory of Cancer Precision Medicine, The First Hospital of Jilin University, Changchun, China
| | - Shaji K. Kumar
- Division of Hematology, Mayo Clinic College of Medicine, Rochester, MN, United States
| | - Fengyan Jin
- Department of Hematology, The First Hospital of Jilin University, Changchun, China
| | - Yun Dai
- Laboratory of Cancer Precision Medicine, The First Hospital of Jilin University, Changchun, China
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7
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Phyllanthus muellerianus and Ficus exasperata exhibit anti-proliferative and pro-apoptotic activities in human prostate cancer PC-3 cells by modulating calcium influx and activating caspases. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01065-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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8
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Ahmad B, Gamallat Y, Khan MF, Din SR, Israr M, Ahmad M, Tahir N, Azam N, Rahman KU, Xin W, Zexu W, Linjie P, Su P, Liang W. Natural Polyphyllins (I, II, D, VI, VII) Reverses Cancer Through Apoptosis, Autophagy, Mitophagy, Inflammation, and Necroptosis. Onco Targets Ther 2021; 14:1821-1841. [PMID: 33732000 PMCID: PMC7956893 DOI: 10.2147/ott.s287354] [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: 12/03/2020] [Accepted: 02/19/2021] [Indexed: 12/15/2022] Open
Abstract
Cancer is the second leading cause of mortality worldwide. Conventional therapies, including surgery, radiation, and chemotherapy, have limited success because of secondary resistance. Therefore, safe, non-resistant, less toxic, and convenient drugs are urgently required. Natural products (NPs), primarily sourced from medicinal plants, are ideal for cancer treatment because of their low toxicity and high success. NPs cure cancer by regulating different pathways, such as PI3K/AKT/mTOR, ER stress, JNK, Wnt, STAT3, MAPKs, NF-kB, MEK-ERK, inflammation, oxidative stress, apoptosis, autophagy, mitophagy, and necroptosis. Among the NPs, steroid saponins, including polyphyllins (I, II, D, VI, and VII), have potent pharmacological, analgesic, and anticancer activities for the induction of cytotoxicity. Recent research has demonstrated that polyphyllins (PPs) possess potent effects against different cancers through apoptosis, autophagy, inflammation, and necroptosis. This review summarizes the available studies on PPs against cancer to provide a basis for future research.
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Affiliation(s)
- Bashir Ahmad
- Department of Biology, University of Haripur, KPK, I. R. Pakistan.,College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Yaser Gamallat
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, People's Republic of China
| | | | - Syed Riaz Din
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Muhammad Israr
- Department of Biology, University of Haripur, KPK, I. R. Pakistan.,Biochemistry and Molecular Biology, College of Life Science, Hebei Normal University, Hebei, People's Republic of China
| | - Manzoor Ahmad
- Department of Chemistry, Malakand University, Chakdara, KPK, I. R. Pakistan
| | - Naeem Tahir
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Nasir Azam
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Khalil Ur Rahman
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Wang Xin
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Wang Zexu
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Peng Linjie
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Pengyu Su
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Wang Liang
- Stem Cell Clinical Research Center, National Joint Engineering Laboratory, Regenerative Medicine Center, The First Affiliated Hospital of Dalian Medical, Dalian City, Liaoning Province, 116011, People's Republic of China
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9
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Development of triazolothiadiazine derivatives as highly potent tubulin polymerization inhibitors: Structure-activity relationship, in vitro and in vivo study. Eur J Med Chem 2020; 208:112847. [DOI: 10.1016/j.ejmech.2020.112847] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 12/13/2022]
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10
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Ibrahim TS, Hawwas MM, Taher ES, Alhakamy NA, Alfaleh MA, Elagawany M, Elgendy B, Zayed GM, Mohamed MFA, Abdel-Samii ZK, Elshaier YAMM. Design and synthesis of novel pyrazolo[3,4-d]pyrimidin-4-one bearing quinoline scaffold as potent dual PDE5 inhibitors and apoptotic inducers for cancer therapy. Bioorg Chem 2020; 105:104352. [PMID: 33080494 DOI: 10.1016/j.bioorg.2020.104352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/23/2020] [Accepted: 10/04/2020] [Indexed: 12/15/2022]
Abstract
PDE5 targeting represents a new and promising strategy for apoptosis induction and inhibition of tumor cell growth due to its over-expression in diverse types of human carcinomas. Accordingly, we report the synthesis of series of pyrazolo[3,4-d]pyrimidin-4-one carrying quinoline moiety (11a-r) with potential dual PDE5 inhibition and apoptotic induction for cancer treatment. These hybrids were structurally elucidated and characterized with variant spectroscopic techniques as 1H NMR, 13C NMR and elemental analysis. The assessment of their anticancer activities has been declared. All the rationalized compounds 11a-r have been selected for their cytotoxic activity screening by NCI against 60 cell lines. Compounds 11a, 11b, 11j and 11k were the most active hybrids. Among all, compound 11j was further selected for five dose tesing and it displayed outstanding activity with strong antitumor activity against the nine tumor subpanels tested with selectivity ratios ranging from 0.019 to 8.3 at the GI50 level. Further, the most active targets 11a, b, j and k were screened for their PDE5 inhibitory activity, compound 11j (with IC50 1.57 nM) exhibited the most potent PDE5 inhibitory activity. Moreover, compound 11j is also showed moderate EGFR inhibition with IC50 of 5.827 ± 0.46 µM, but significantly inhibited the Wnt/β-catenin pathway with IC501286.96 ± 12.37 ng/mL. In addition, compound 11j induced the intrinsic apoptotic mitochondrial pathway in HepG2 cells as evidenced by the lower expression levels of the anti-apoptotic Bcl-2 protein, and the higher expression of the pro-apoptotic protein Bax, p53, cytochrome c and the up-regulated active caspase-9 and caspase-3 levels. All results confirmed by western blotting assay. Compound 11j exhibit pre G1 apoptosis and cell cycle arrest at G2/M phase. In conclusion, hybridization of quinoline moiety with the privileged pyrazolo[3,4-d]pyrimidinon-4-one structure resulted in highly potent anticancer agent, 11j, which deserves more study, in particular, in vivo and clinical investiagtions, and it is expected that these results would be applied for more drug discovery process.
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Affiliation(s)
- Tarek S Ibrahim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Center of Excellence for Drug Research & Pharmaceutical Industries, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt.
| | - Mohamed M Hawwas
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt
| | - Ehab S Taher
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt
| | - Nabil A Alhakamy
- Center of Excellence for Drug Research & Pharmaceutical Industries, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Advanced Drug Delivery Research Group, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohamed A Alfaleh
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohamed Elagawany
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
| | - Bahaa Elgendy
- Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO 63110, USA; Center for Clinical Pharmacology, Washington University School of Medicine and St. Louis College of Pharmacy, St. Louis, MO 63110, USA; Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Gamal M Zayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University at Assiut, Assiut, Egypt; Al-Azhar Centre of Nanosciences and Applications (ACNA), Assiut, Egypt
| | - Mamdouh F A Mohamed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sohag University, 82524 Sohag, Egypt
| | - Zakaria K Abdel-Samii
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Yaseen A M M Elshaier
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, 32958 Menoufia, Egypt
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11
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Co-operation of ABT-199 and gemcitabine in impeding DNA damage repair and inducing cell apoptosis for synergistic therapy of T-cell acute lymphoblastic leukemia. Anticancer Drugs 2020; 30:138-148. [PMID: 30320607 DOI: 10.1097/cad.0000000000000702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is a high-risk subtype of acute lymphoblastic leukemia with limited therapeutic options available. Here, we evaluated the therapeutic potential of the combination of the Bcl-2 antagonist ABT-199 and cytotoxic agent gemcitabine in T-ALL cell lines. Our results showed that the combination of ABT-199 and gemcitabine exhibited synergistic cytotoxicity and induced significant apoptosis in human T-ALL cell lines (Jurkat and Molt4). The augmented apoptosis induced by combination treatment was accompanied by the greater extent of mitochondrial depolarization and enhanced DNA damage. Importantly, single agent induced DNA damage alone but did not inhibit RAD51/BRCA1-mediated repair for DNA double-strand breaks. In contrast, the combination of ABT-199 and gemcitabine disrupted RAD51/BRCA1-dependent DNA repair and remarkably activated caspase-3 and PARP to trigger apoptosis. Moreover, ABT-199 exerted an antagonistic action towards Bcl-2 and Bcl-xL, but to a certain extent moderately increased Mcl-1 level that could be compromised by gemcitabine. In conclusion, our study showed that the combination of ABT-199 and gemcitabine exhibited synergistic cytotoxicity in T-ALL cells by cooperatively targeting DNA damage repair pathway and Bcl-2 family proteins.
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12
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Agca CA, Kırıcı M, Nedzvetsky VS, Gundogdu R, Tykhomyrov AA. The Effect of TIGAR Knockdown on Apoptotic and Epithelial-Mesenchymal Markers Expression in Doxorubicin-Resistant Non-Small Cell Lung Cancer A549 Cell Lines. Chem Biodivers 2020; 17:e2000441. [PMID: 32639659 DOI: 10.1002/cbdv.202000441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/07/2020] [Indexed: 01/06/2023]
Abstract
Resistance to chemotherapeutic drugs is a critical problem in cancer therapy, but the underlying mechanism has not been fully elucidated. TP53-induced glycolysis regulatory phosphatase (TIGAR), an important glycolysis and apoptosis regulator, plays a crucial role in cancer cell survival by protecting cells against oxidative stress-induced apoptosis. In the present study, we investigated whether TIGAR is involved in epithelial-mesenchymal transition (EMT) in doxorubicin (DOX)-resistant human non-small cell lung cancer (NSCLC), A549/DOX cells. We found that the expression of TIGAR was significantly higher in A549/DOX cells than in the parent A549 cell lines. siRNA-mediated TIGAR knockdown reduced migration, viability and colony survival of doxorubicin-resistant lung cancer cells. Also, TIGAR knockdown decreased pro-survival protein Bcl-2 and increased pro-apoptotic Bax and cleaved poly (ADP-ribose) polymerase (PARP). Moreover, TIGAR depletion significantly up-regulated both caspase-3 and caspase-9 expression. Furthermore, TIGAR depletion up-regulated the expression of E-cadherin and down-regulated the expression of vimentin. These results indicate that TIGAR knockdown may inhibit EMT in doxorubicin (DOX)-resistant human NSCLC and may represent a therapeutic target for a non-small lung cancer cells chemoresistance.
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Affiliation(s)
- Can Ali Agca
- Department of Molecular Biology and Genetics, Bingol University, 12000, Bingol, Turkey
| | - Mahinur Kırıcı
- Department of Chemistry, Bingol University, 12000, Bingol, Turkey
| | - Victor S Nedzvetsky
- Department of Molecular Biology and Genetics, Bingol University, 12000, Bingol, Turkey.,Department of Biophysics and Biochemistry, Dnipro National University, 49000, Dnipro, Ukraine
| | | | - Artem A Tykhomyrov
- Department of Enzyme Chemistry and Biochemistry, Palladin Institute of Biochemistry of the National Academy of Sciences of Ukraine, 01030, Kyiv, Ukraine
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13
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Nazmy MH, Mekheimer RA, Shoman ME, Abo-Elsebaa M, Abd-Elmonem M, Sadek KU. Densely functionalized cinnolines: Controlled microwave-assisted facile one-pot multi-component synthesis and in vitro anticancer activity via apoptosis induction. Bioorg Chem 2020; 101:103932. [PMID: 32506019 DOI: 10.1016/j.bioorg.2020.103932] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 05/02/2020] [Accepted: 05/10/2020] [Indexed: 11/25/2022]
Abstract
There is an urging continuous need for novel anti-cancer agents due to persistent chemoresistance. Herein, newly synthesized cinnolines are evaluated for their possible anticancer activities and suggested mechanisms. In the current study, a simple and efficient synthesis of densely functionalized cinnolines has been developed that relied on multi-component reaction of ethyl 5-cyano-4-methyl-1-aryl-6-oxo-1,6-dihydropyridazine-3-carboxylates with aromatic aldehydes and nitromethane in dioxane/pipridine under controlled microwave heating. Selected cinnolines (4a-c, e, h, j-n, q-v) were tested for possible anticancer activity using in vitro one dose assay at National Cancer institute, USA. Only cinnoline 4b stood out as the most potent cinnoline derivative (mean GI%=26.33) with broad-spectrum antitumor activity against the most tested cancer cell lines from all subpanels. The target cinnoline 4b emerged as the most active derivative against both leukemia RPMI-8226 and melanoma LOX IMVI cell lines (GI% = 106.06 and 82.1) respectively, with IC50 values equal to 17.12 ± 1.31 and 12.32 ± 0.75 μg/mL, which are comparable to those of staurosporin; 24.97 ± 1.47 and 8.45 ± 0.42 μg/mL, respectively. Cinnoline 4b influenced cell cycle distribution causing pre-G1 apoptosis and cell growth arrest at G2/M phase. It also induced apoptosis in both cell lines as manifested by significant increase in the percent of annexin V-FITC positive apoptotic cells in leukemia RPMI-8226 cells (from 1.09% to 12.47%) and melanoma LOX IMVI (from 1.32% to 19.05%). In addition, it showed lower expression levels of anti-apoptotic Bcl-2 protein, and higher expression levels of pro-apoptotic proteins; Bax, p53, cytochrome c, caspases 3 and 9. CONCLUSION: Induction of mitochondrial intrinsic pathway of apoptosis is a possible mechanism by which cinnoline 4b may confer its anticancer activity.
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Affiliation(s)
- Maiiada Hassan Nazmy
- Biochemistry Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt.
| | | | - Mai E Shoman
- Medicinal Chemistry Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Mohamed Abo-Elsebaa
- Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt
| | - Mohamed Abd-Elmonem
- Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt
| | - Kamal Usef Sadek
- Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt
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14
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Gregoraszczuk EL, Zajda K, Tekla J, Respekta N, Zdybał P, Such A. Vitamin C supplementation had no side effect in non-cancer, but had anticancer properties in ovarian cancer cells. INT J VITAM NUTR RES 2020; 91:293-303. [PMID: 32008465 DOI: 10.1024/0300-9831/a000634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Vitamin C (Vit C) has been widely used in the treatment and prevention of cancer. Nevertheless, the clinical results are still inconclusive. Using non-cancer (HOSEpiC) and cancer OVCAR-3 cells cultured in basal medium or in ovarian cancer-associated fibroblast (CAF)-supplemented medium, we estimated the dose-dependent effect of Vit C on sodium-ascorbate co-transporters (SVCT1, SVCT2) and glucose transporter (GLUT1) protein expression. Additionally, the action of Vit C on cell proliferation (alamarBlue), membrane permeability (LDH assay), caspase3 activity, the selected cell cycle and apoptosis pathway, poly(ADP-ribose) polymerase-1 (PARP) protein expression, and reactive oxygen species (ROS) activity was determined. We showed different effects of Vit C on the expression of the co-transporter in non-cancer and cancer cells. In non-cancer cells, Vit C, at a pharmacological concentration, increased SVCT2 and decreased GLUT1, while the opposite effect was noted in cancer cells. In cancer cells, Vit C, in a pharmacological dose, decreased cell proliferation through an inhibitory effect on cyclin-dependent kinase 2 (CDK2) (4.4-fold; p < 0.01), mainly due to the stimulatory effect on the expression of cyclin-dependent kinase (CDK) inhibitors, such as p21 and p53 (3.2- and 2.8-fold, respectively; p < 0.001), but not caspase pathway. The tumour microenvironment caused inefficiency of the lower doses of Vit C in ovarian cancer cells. At a pharmacological dose of 1 mM, Vit C decreased PARP expression (1.5-fold; p < 0.05). We suggest that it's nontoxic effects on non-cancer cells may be an indicator of its prophylactic use, while in a pharmacological dose Vit C should be considered a possible adjunctive drug in ovarian cancer. However, it is necessary to consider the effect of the CAF.
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Affiliation(s)
- Ewa Lucja Gregoraszczuk
- Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Kraków, Poland
| | - Karolina Zajda
- Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Kraków, Poland
| | - Joanna Tekla
- Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Kraków, Poland
| | - Natalia Respekta
- Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Kraków, Poland
| | - Paweł Zdybał
- Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Kraków, Poland
| | - Aleksandra Such
- Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Kraków, Poland
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15
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Tetrandrine inhibits colon carcinoma HT-29 cells growth via the Bcl-2/Caspase 3/PARP pathway and G1/S phase. Biosci Rep 2019; 39:BSR20182109. [PMID: 31040202 PMCID: PMC6522708 DOI: 10.1042/bsr20182109] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/28/2019] [Accepted: 04/30/2019] [Indexed: 12/27/2022] Open
Abstract
Tetrandrine (Tet) bisbenzylisoquinoline alkaloids isolated from Stephania tetrandra and other related species of Menispermaceae. It has been demonstrated to have positive therapeutic effects on cardiovascular disease, hypertension, silicosis, autoimmune diseases. In recent years, some reports have shown that Tet has anticancer activity in human cancers. To explore the pharmacological activity and mechanism of Tet on colon cancer and its unique advantages as a natural product. In the present study, analyses of the cell cycle, apoptosis, targets prediction, molecular docking, and alterations in protein levels were performed to elucidate how Tet functions in colon cancer. We found that Tet robustly induced arrest at the G1 phase in colon cancer cell line HT-29. It induced HT-29 cell apoptosis in a dose-dependent manner. Similarly, analysis of protein expression levels in HT-29 cells showed down-regulation of Bcl-2, pro-caspase 3, pro-caspase 8, PARP, cyclin D1 (CCND1), cyclin-dependent kinase 4 (CDK 4), and up-regulation of Bax, active caspase 3, and active caspase 8. These results indicate that Tet induces apoptosis of colon cancer cells through the mitochondrial pathway and caspase family pathway. Molecular docking showed interaction effects and binding energy. Comparing with the CDK4 inhibitors ribociclib and palbociclib, the docking energy is similar to the docked amino acid residues. Therefore, we conclude that Tet and the CCND1/CDK4 compound could form hydrogen bonds and a stable compound structure, which can inhibit colon cancer cells proliferation by regulating CCND1/CDK4 compound and its downstream proteins phosphorylated Rb (p-Rb). In summary, Tet may be a potential drug for colon cancer therapy.
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16
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Ahmad B, Khan S, Nabi G, Gamallat Y, Su P, Jamalat Y, Duan P, Yao L. Natural gypenosides: targeting cancer through different molecular pathways. Cancer Manag Res 2019; 11:2287-2297. [PMID: 31114315 PMCID: PMC6497488 DOI: 10.2147/cmar.s185232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 02/08/2019] [Indexed: 01/22/2023] Open
Abstract
The second foremost cause of mortality around the word is cancer. Conventional therapies, such as radiation, surgery, and chemotherapy have limited accessibility owing to secondary resistance. Therefore, convenient, safe, and nonresistant drugs are urgently needed. Plant-derived natural products have attracted considerable interest owing to their high efficacy, low toxicity, and convenience. Gypenosides (Gyp) inhibit invasion, migration, metastasis, and proliferation and induce apoptosis in different cancers, including oral, lung, colorectal, hepatocellular, and leukemic cancers through different molecular pathways. This review summarizes Gyp studies on cancer to serve as a reference for further research and clinical trials.
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Affiliation(s)
- Bashir Ahmad
- Henan Provincial Engineering Research Center for Health Products of Livestock and Poultry, Nanyang Normal University, Nanyang, People's Republic of China.,College of Basic Medical Sciences, Dalian Medical University, Dalian City, People's Republic of China
| | - Suliman Khan
- Henan Provincial Engineering Research Center for Health Products of Livestock and Poultry, Nanyang Normal University, Nanyang, People's Republic of China.,Collaborative Innovation Centre of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province/Key Laboratory of Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, School of Agricultural Engineering, Nanyang Normal University, Nanyang, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ghulam Nabi
- University of Chinese Academy of Sciences, Beijing, People's Republic of China.,Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, People's Republic of China
| | - Yaser Gamallat
- College of Basic Medical Sciences, Dalian Medical University, Dalian City, People's Republic of China
| | - Pengyu Su
- College of Basic Medical Sciences, Dalian Medical University, Dalian City, People's Republic of China
| | - Yazeed Jamalat
- College of Basic Medical Sciences, Dalian Medical University, Dalian City, People's Republic of China
| | - Pengfei Duan
- Henan Provincial Engineering Research Center for Health Products of Livestock and Poultry, Nanyang Normal University, Nanyang, People's Republic of China.,Collaborative Innovation Centre of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province/Key Laboratory of Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, School of Agricultural Engineering, Nanyang Normal University, Nanyang, People's Republic of China
| | - Lunguang Yao
- Henan Provincial Engineering Research Center for Health Products of Livestock and Poultry, Nanyang Normal University, Nanyang, People's Republic of China.,Collaborative Innovation Centre of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province/Key Laboratory of Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, School of Agricultural Engineering, Nanyang Normal University, Nanyang, People's Republic of China
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17
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Zhang T, Zhao G, Zhu X, Jiang K, Wu H, Deng G, Qiu C. Sodium selenite induces apoptosis via ROS-mediated NF-κB signaling and activation of the Bax-caspase-9-caspase-3 axis in 4T1 cells. J Cell Physiol 2018; 234:2511-2522. [PMID: 30218457 DOI: 10.1002/jcp.26783] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/27/2018] [Indexed: 12/27/2022]
Abstract
Sodium selenite (SSE), a source of inorganic selenium, has been widely used as a clinical cancer treatment, but the precise molecular mechanisms of SSE remain to be elucidated. Our in vitro experiments have confirmed that SSE treatment causes a transient increase in intracellular reactive oxygen species (ROS) levels, resulting in the inhibition of nuclear transcription factor-κB (NF-κB) signaling and p65 and nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha phosphorylation levels in 4T1 cells. The inhibition of NF-κB subsequently increased the expression of the apoptosis gene B-cell lymphoma-2-associated X (Bax) and downregulated the transcription of antiapoptosis genes, such as B-cell lymphoma-2, cellular inhibitor of apoptosis 1, and X-linked inhibitor of apoptosis. Additionally, the accumulation of ROS caused mitochondrial dysfunction, leading to the activation of caspase-9 and -3, thereby resulting in apoptosis. However, modulation of the ROS level by the chemical inhibitor N-acetyl-cysteine reversed these events. Similarly, in vitro murine syngeneic breast tumor models showed that SSE inhibits tumor growth by promoting apoptosis. These results indicate that SSE induces apoptosis via ROS-mediated inhibition of NF-κB signaling and activation of the Bax-caspase-9-caspase-3 axis.
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Affiliation(s)
- Tao Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Gan Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Xinying Zhu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Kangfeng Jiang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Haichong Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Changwei Qiu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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18
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Grant S. Rational combination strategies to enhance venetoclax activity and overcome resistance in hematologic malignancies. Leuk Lymphoma 2018; 59:1292-1299. [PMID: 28838268 PMCID: PMC5826810 DOI: 10.1080/10428194.2017.1366999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Venetoclax (ABT-199) is a Bcl-2-specific BH3-mimetic that has shown significant promise in certain subtypes of CLL as well as in several other hematologic malignancies. As in the case of essentially all targeted agents, intrinsic or acquired resistance to this agent generally occurs, prompting the search for new strategies capable of circumventing this problem. A logical approach to this challenge involves rational combination strategies designed to disable preexisting or induced compensatory survival pathways. Many of these strategies involve downregulation of Mcl-1, a pro-survival Bcl-2 family member that is not targeted by venetoclax, and which often confers resistance to this agent. Given encouraging clinical results involving venetoclax in both lymphoid and myeloid malignancies, it is likely that such combination approaches will be incorporated into the therapeutic armamentarium for multiple hematologic malignancies in the near future.
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Affiliation(s)
- Steven Grant
- Department of Medicine, Biochemistry, Pharmacology, and Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA, USA
- Department of Translational Research, Developmental Therapeutics Program, Massey Cancer Center, Richmond, VA, USA
- Shirley Carter and Sture Gordon Olsson Professor of Oncology, Virginia Commonwealth University Medical Center, Richmond, VA, USA
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19
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Banerjee S, Chaturvedi CM. Apoptotic mechanism behind the testicular atrophy in photorefractory and scotosensitive quail: Involvement of GnIH induced p-53 dependent Bax-Caspase-3 mediated pathway. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 176:124-135. [DOI: 10.1016/j.jphotobiol.2017.09.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 12/17/2022]
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20
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Wu H, Liu S, Gong J, Liu J, Zhang Q, Leng X, Zhang N, Li Y. VCPA, a novel synthetic derivative of α-tocopheryl succinate, sensitizes human gastric cancer to doxorubicin-induced apoptosis via ROS-dependent mitochondrial dysfunction. Cancer Lett 2017; 393:22-32. [PMID: 28216375 DOI: 10.1016/j.canlet.2017.02.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/06/2017] [Accepted: 02/07/2017] [Indexed: 11/29/2022]
Abstract
Gastric carcinoma is a common malignant disease worldwide and has a dismal prognosis. Doxorubicin (DOX), one of the most widely used chemotherapeutic agents, has limited use because of its side effects and the development of tumor-cell resistance. Combinations of doxorubicin and non-cross-resistant agents have been required for adjuvant chemotherapy of gastric cancer. Here, we report that VCPA, a novel synthetic derivative of α-Tocopheryl Succinate, induced apoptosis via production of reactive oxygen species (ROS). When used in combination with doxorubicin, lower doses of VCPA sensitized human gastric cancer cells to DOX-induced apoptosis. The DOX/VCPA combination treatment caused an imbalance in the ratio of Bcl-2 to Bax and induced a lethal mitochondrial dysfunction. MAPKs were also activated in response to the DOX/VCPA treatment but played a protective role in DOX-induced cell death. In vivo studies further confirmed the sensitizing effect of VCPA. Combining DOX with VCPA markedly inhibited tumor growth in a tumor xenograft model of human gastric cancer. Taken together, our study revealed that VCPA, through increased ROS production, could synergize with DOX and circumvent DOX resistance in human gastric cancer cells.
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Affiliation(s)
- Han Wu
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China
| | - Shaoping Liu
- Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jun Gong
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China
| | - Jiuyang Liu
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China
| | - Qian Zhang
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China
| | - Xiaohua Leng
- Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China
| | - Nian Zhang
- Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China
| | - Yan Li
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, China; Department of Peritoneal Cancer Surgery, Cancer Center of Beijing Shijitan Hospital, The Capital Medical University, Beijing, China.
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21
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Abbaspour Babaei M, Zaman Huri H, Kamalidehghan B, Yeap SK, Ahmadipour F. Apoptotic induction and inhibition of NF-κB signaling pathway in human prostatic cancer PC3 cells by natural compound 2,2'-oxybis (4-allyl-1-methoxybenzene), biseugenol B, from Litsea costalis: an in vitro study. Onco Targets Ther 2017; 10:277-294. [PMID: 28138251 PMCID: PMC5237594 DOI: 10.2147/ott.s102894] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Litsea is considered as an evergreen genus distributed in tropical and subtropical Asia; this genus belongs to the large family of Lauraceae. In this study, the cell-death metabolism of biseugenol B was investigated. Nuclear condensation, cell permeability, mitochondrial membrane potential (MMP) and release of cytochrome c have been detected in human prostate cancer cell line (PC3) treated with biseugenol B by high content screening (HCS). Fluorescent analysis was conducted to examine the reactive oxygen species formation. To determine the mechanism of cell death, the levels of Bcl-cell lymphoma (Bcl)-2 proteins, Bcl-2-associated X (Bax) protein and anti-apoptosis heat-shock protein 70 were tested by applying reverse transcription polymerase chain reaction and Western blot. Bioluminescent assays were also performed to assess the level of caspases such as 3/7, 8 and 9 during treatment. Furthermore, the involvement of nuclear factor kappa-B (NF-κB) was examined by Western blot and HCS. Biseugenol B showed significant cytotoxicity toward PC3 with no toxicity toward normal prostate cells (RWPE-1), which indicates that biseugenol B has qualities that induce apoptosis in tumor cells. The treatment of PC3 cells with biseugenol B provoked apoptosis with cell-death-transducing signals. Downregulation of Bcl-2 and upregulation of Bax regulated the MMP, which in turn caused the release of cytochrome c from mitochondria into cytosol. The release of cytochrome c activated caspase-9, which consequently activated caspase-3/7 with the cleaved poly(ADP-ribose) polymerase protein, thereby resulting in apoptosis alteration. Involvement of an extrinsic apoptosis pathway was exhibited by the increase in caspase-8, while the increase in caspase-3/7 and caspase-9 demonstrated involvement of an intrinsic apoptosis pathway. Meanwhile, no significant increase was observed in caspases 3/7, 8 or 9 in normal prostate cells (RWPE-1) after treatment with biseugenol B. Prevention of NF-κB translocation from the cytosol to the nucleus occurred in PC3 after treatment with biseugenol B. The results of our study reveal that biseugenol B triggers the apoptosis of PC3 cells via intrinsic and extrinsic apoptosis pathways and inhibition of NF-κB signaling pathway. Our findings suggest that biseugenol B is a potentially useful agent for prostate cancer treatment.
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Affiliation(s)
| | - Hasniza Zaman Huri
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; Clinical Investigation Centre (CIC), University of Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - Behnam Kamalidehghan
- Medical Genetics Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Medical Genetics Department, National Institute for Genetics Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Swee Keong Yeap
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia; Xiamen University Malaysia, Sepang, Malaysia
| | - Fatemeh Ahmadipour
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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22
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Xu P, Cai X, Zhang W, Li Y, Qiu P, Lu D, He X. Flavonoids of Rosa roxburghii Tratt exhibit radioprotection and anti-apoptosis properties via the Bcl-2(Ca2+)/Caspase-3/PARP-1 pathway. Apoptosis 2016; 21:1125-43. [DOI: 10.1007/s10495-016-1270-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Banerjee S, Tsutsui K, Chaturvedi CM. Apoptosis-mediated testicular alteration in Japanese quail (Coturnix coturnix japonica) in response to temporal phase relation of serotonergic and dopaminergic oscillations. J Exp Biol 2016; 219:1476-87. [DOI: 10.1242/jeb.129155] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 02/03/2016] [Indexed: 01/29/2023]
Abstract
ABSTRACT
Reproductive performance of many avian species, including Japanese quail, is reported to be modulated by specific temporal phase relation of serotonergic and dopaminergic oscillations. Accordingly, it has been shown that the serotonin precursor 5-HTP and the dopamine precursor l-DOPA given 8 h apart induce gonadal suppression and given 12 h apart lead to gonadal stimulation, while other temporal relationships were found to be ineffective. In the present study, we investigated the effects of 8- and 12-h phase relation of neural oscillations on testicular responses including expression of GnRH-I, GnIH, pro-apoptotic proteins (p53 and Bax), inactive and active executioner caspase-3, and the uncleaved DNA repair enzyme PARP-1. Testicular volume and mass decreased significantly in 8-h quail and increased in 12-h quail compared with controls. Expression of ir-GnIH, p53, Bax and active-caspase-3 increased and that of GnRH-I, pro-caspase-3 and uncleaved PARP-1 decreased in 8-h quail compared with controls. A TUNEL assay also confirmed testicular regression in these quail. Testes of 12-h quail exhibited significantly increased expression of GnRH-I, pro-caspase-3 and uncleaved PARP-1 compared with the control group. Our findings suggest that differential response of avian testes to 8- and 12-h phase relation of serotonergic and dopaminergic neural oscillations may be attributed to autocrine/paracrine action of GnIH expression, which is upregulated in regressed testes, leading to apoptotic changes, and downregulated in developed testes, causing apoptotic inhibition. It is concluded that specific phase relation of neural oscillations may modulate the local testicular GnRH-GnIH system and alter the apoptotic mechanism in quail testes. Moreover, these findings highlight the physiological effects of time-dependent drug delivery, including the specific time intervals between two drugs.
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Affiliation(s)
- Somanshu Banerjee
- Department of Zoology, Banaras Hindu University, Varanasi 221005, India
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24
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Chen Z, Xue J, Shen T, Ba G, Yu D, Fu Q. Curcumin alleviates glucocorticoid-induced osteoporosis by protecting osteoblasts from apoptosisin vivoandin vitro. Clin Exp Pharmacol Physiol 2016; 43:268-76. [PMID: 26515751 DOI: 10.1111/1440-1681.12513] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 09/14/2015] [Accepted: 10/25/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Zhiguang Chen
- Department of Spine and Joint Surgery; Shengjing Hospital of China Medical University; Shenyang China
| | - Jinqi Xue
- The Seventh Department of General Surgery; Shengjing Hospital of China Medical University; Shenyang China
| | - Tao Shen
- Department of Spine and Joint Surgery; Shengjing Hospital of China Medical University; Shenyang China
| | - Gen Ba
- Department of Spine and Joint Surgery; Shengjing Hospital of China Medical University; Shenyang China
| | - Dongdong Yu
- Department of Spine and Joint Surgery; Shengjing Hospital of China Medical University; Shenyang China
| | - Qin Fu
- Department of Spine and Joint Surgery; Shengjing Hospital of China Medical University; Shenyang China
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25
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Forebrain neuronal specific ablation of p53 gene provides protection in a cortical ischemic stroke model. Neuroscience 2015; 295:1-10. [PMID: 25779964 DOI: 10.1016/j.neuroscience.2015.03.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/20/2015] [Accepted: 03/07/2015] [Indexed: 01/29/2023]
Abstract
Cerebral ischemic injury involves death of multiple cell types at the ischemic sites. As a key regulator of cell death, the p53 gene has been implicated in the regulation of cell loss in stroke. Less focal damage is found in stroke animals pre-treated with a p53 inhibitor or in traditional p53 knockout (ko) mice. However, whether the p53 gene plays a direct role in regulating neuronal cell death is unknown. In this study, in contrast to the global inhibition of p53 function by pharmacological inhibitors and in traditional p53 ko mice, we utilized a neuronal specific conditional ko mouse line (CamcreTRP53(loxP/loxP)) to achieve forebrain neuronal specific deletion of p53 and examined the role of the p53 gene in ischemia-induced cell death in neurons. Expression of p53 after stroke is examined using the immunohistochemical method and the outcome of stroke is examined by analysis of infarction size and behavioral deficits caused by stroke. Our data showed that p53 expression is upregulated in the ischemic region in neuronal cells in wildtype (wt) mice but not in CamcreTRP53(loxP/loxP) ko mice. Deletion of the p53 gene in forebrain neurons results in a decreased infarction area in ko mice. Locomotor behavior, measured in automated activity chambers, showed that CamcreTRP53(loxP/loxP) ko mice have less locomotor deficits compared to wt mice after middle cerebral artery occlusion (MCAo). We conclude that manipulation of p53 expression in neurons may lead to unique therapeutic development in stroke.
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Ahmadipour F, Noordin MI, Mohan S, Arya A, Paydar M, Looi CY, Keong YS, Siyamak EN, Fani S, Firoozi M, Yong CL, Sukari MA, Kamalidehghan B. Koenimbin, a natural dietary compound of Murraya koenigii (L) Spreng: inhibition of MCF7 breast cancer cells and targeting of derived MCF7 breast cancer stem cells (CD44(+)/CD24(-/low)): an in vitro study. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:1193-208. [PMID: 25759564 PMCID: PMC4346015 DOI: 10.2147/dddt.s72127] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Inhibition of breast cancer stem cells has been shown to be an effective therapeutic strategy for cancer prevention. The aims of this work were to evaluate the efficacy of koenimbin, isolated from Murraya koenigii (L) Spreng, in the inhibition of MCF7 breast cancer cells and to target MCF7 breast cancer stem cells through apoptosis in vitro. METHODS Koenimbin-induced cell viability was evaluated using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Nuclear condensation, cell permeability, mitochondrial membrane potential, and cytochrome c release were observed using high-content screening. Cell cycle arrest was examined using flow cytometry, while human apoptosis proteome profiler assays were used to investigate the mechanism of apoptosis. Protein expression levels of Bax, Bcl2, and heat shock protein 70 were confirmed using Western blotting. Caspase-7, caspase-8, and caspase-9 levels were measured, and nuclear factor kappa B (NF-κB) activity was assessed using a high-content screening assay. Aldefluor™ and mammosphere formation assays were used to evaluate the effect of koenimbin on MCF7 breast cancer stem cells in vitro. The Wnt/β-catenin signaling pathway was investigated using Western blotting. RESULTS Koenimbin-induced apoptosis in MCF7 cells was mediated by cell death-transducing signals regulating the mitochondrial membrane potential by downregulating Bcl2 and upregulating Bax, due to cytochrome c release from the mitochondria to the cytosol. Koenimbin induced significant (P<0.05) sub-G0 phase arrest in breast cancer cells. Cytochrome c release triggered caspase-9 activation, which then activated caspase-7, leading to apoptotic changes. This form of apoptosis is closely associated with the intrinsic pathway and inhibition of NF-κB translocation from the cytoplasm to the nucleus. Koenimbin significantly (P<0.05) decreased the aldehyde dehydrogenase-positive cell population in MCF7 cancer stem cells and significantly (P<0.01) decreased the size and number of MCF7 cancer stem cells in primary, secondary, and tertiary mammospheres in vitro. Koenimbin also significantly (P<0.05) downregulated the Wnt/β-catenin self-renewal pathway. CONCLUSION Koenimbin has potential for future chemoprevention studies, and may lead to the discovery of further cancer management strategies by reducing cancer resistance and recurrence and improving patient survival.
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Affiliation(s)
- Fatemeh Ahmadipour
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Syam Mohan
- Medical Research Center, Jazan University, Jazan, Kingdom of Saudi Arabia
| | - Aditya Arya
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohammadjavad Paydar
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Chung Yeng Looi
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yeap Swee Keong
- UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Ebrahimi Nigjeh Siyamak
- UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Somayeh Fani
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Maryam Firoozi
- Department of Medical Genetics, National Institute for Genetic Engineering and Biotechnology, Tehran, Iran
| | - Chung Lip Yong
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Behnam Kamalidehghan
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Li L, Yao YC, Gu XQ, Che D, Ma CQ, Dai ZY, Li C, Zhou T, Cai WB, Yang ZH, Yang X, Gao GQ. Plasminogen kringle 5 induces endothelial cell apoptosis by triggering a voltage-dependent anion channel 1 (VDAC1) positive feedback loop. J Biol Chem 2014; 289:32628-38. [PMID: 25296756 DOI: 10.1074/jbc.m114.567792] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Human plasminogen kringle 5 (K5) is known to display its potent anti-angiogenesis effect through inducing endothelial cell (EC) apoptosis, and the voltage-dependent anion channel 1 (VDAC1) has been identified as a receptor of K5. However, the exact role and underlying mechanisms of VDAC1 in K5-induced EC apoptosis remain elusive. In the current study, we showed that K5 increased the protein level of VDAC1, which initiated the mitochondrial apoptosis pathway of ECs. Our findings also showed that K5 inhibited the ubiquitin-dependent degradation of VDAC1 by promoting the phosphorylation of VDAC1, possibly at Ser-12 and Thr-107. The phosphorylated VDAC1 was attenuated by the AKT agonist, glycogen synthase kinase (GSK) 3β inhibitor, and siRNA, suggesting that K5 increased VDAC1 phosphorylation via the AKT-GSK3β pathway. Furthermore, K5 promoted cell surface translocation of VDAC1, and binding between K5 and VDAC1 was observed on the plasma membrane. HKI protein blocked the impact of K5 on the AKT-GSK3β pathway by competitively inhibiting the interaction of K5 and cell surface VDAC1. Moreover, K5-induced EC apoptosis was suppressed by VDAC1 antibody. These data show for the first time that K5-induced EC apoptosis is mediated by the positive feedback loop of "VDAC1-AKT-GSK3β-VDAC1," which may provide new perspectives on the mechanisms of K5-induced apoptosis.
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Affiliation(s)
- Lei Li
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, the Department of Reproductive Medicine Center, Key Laboratory for Reproductive Medicine of Guangdong Province, Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Guangzhou 510150
| | - Ya-Chao Yao
- the Laboratory Center of Guangdong NO.2 Provincial People's Hospital, Guangzhou 510317
| | - Xiao-Qiong Gu
- the Department of Laboratory, Guangzhou Women and Children's Medical Center, Guangzhou 510623
| | - Di Che
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Cai-Qi Ma
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Zhi-Yu Dai
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Cen Li
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Ti Zhou
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Wei-Bin Cai
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Zhong-Han Yang
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080
| | - Xia Yang
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, the China Key Laboratory of Tropical Disease Control, Sun Yat-sen University, Ministry of Education, Guangzhou 510080, and
| | - Guo-Quan Gao
- From the Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, the Key Laboratory of Functional Molecules from Marine Microorganisms, Sun Yat-sen University, Department of Education of Guangdong Province, Guangzhou 510080, China
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Larsen HL, Andersen MH, Wandall HH, Madsen CB, Christensen RE, Petersen TR, Pedersen AE. Induction of Bcl-xL-specific cytotoxic T lymphocytes in mice. Scand J Immunol 2014; 80:111-20. [PMID: 24846184 DOI: 10.1111/sji.12192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 05/10/2014] [Indexed: 11/30/2022]
Abstract
The induction of active immunity against tumour-associated antigens to prevent relapse of cancer is a promising approach but has so far shown only low efficacy. This low efficacy may in part be due to clonal escape of tumour cell variants by the downregulation of antigen expression or inflammation-induced dedifferentiation. Identification of novel tumour-associated antigens that at the same time are essential for continued tumour cell survival is thus critical for the development of active cancer vaccinations. At the same time, identification of novel endogenous murine tumour antigens will help improve preclinical development of cancer immunotherapy. The anti-apoptotic protein Bcl-xL has been suggested to be such an essential tumour antigen, but the lack of well-defined murine epitopes have delayed preclinical studies of Bcl-xL-targeting cancer vaccines. Here, we report the identification of two novel murine tumour-associated epitopes TAYQSFEQV and AFFSFGGAL derived from mouse Bcl-xL. Dendritic cell (DC)-based vaccination induced CD8(+) T cells capable of producing IFN-γ upon restimulation with these epitopes. Thus, our data may benefit the design of future immunotherapy strategies by providing a preclinical model for cancer vaccination with an endogenous tumour antigen that can be combined with other cancer treatments.
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Affiliation(s)
- H L Larsen
- Department of International Health, Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Biala AK, Kirshenbaum LA. The interplay between cell death signaling pathways in the heart. Trends Cardiovasc Med 2014; 24:325-31. [PMID: 25263458 DOI: 10.1016/j.tcm.2014.08.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 01/17/2023]
Abstract
To date, one of the most intriguing and compelling concepts to impact contemporary cell biology is the notion that cell fate is "programmed" or genetically controlled. Indeed, the regulation of cell fate is crucial for embryonic development, and tissue homeostasis. Given the importance of removing damaged or irreversibly injured cells from the body, it is not surprising that defects in the regulatory mechanisms that govern cell death and/or survival more generally have been implicated in a number of human pathologies including cancer, neurodegenerative diseases, and cardiac failure. Several processes involved in the regulation of cell fate through apoptosis, necrosis, and autophagy are commonly linked through the actions of certain Bcl-2 proteins that act on the mitochondrion. For example, the Bcl-2 protein Beclin-1 is actively involved in the clearance of damaged mitochondria via mitophagy, while other Bcl-2 proteins such as Bax/Bak can initiate apoptosis or necrotic signaling pathways. The overlapping and redundant nature of these proteins highlights their evolutionary importance for regulating cardiac cell survival and death during normal and disease states. Here, we explore the interrelationship between these signaling pathways and the cellular effectors that influence cardiac cell fate.
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Affiliation(s)
- Agnieszka K Biala
- The Institute of Cardiovascular Sciences, St. Boniface Hospital Research Centre, University of Manitoba, Centre Rm. 3016, 351 TachéAvenue, Winnipeg, Manitoba, Canada R2H 2A6; Department of Physiology, College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Lorrie A Kirshenbaum
- The Institute of Cardiovascular Sciences, St. Boniface Hospital Research Centre, University of Manitoba, Centre Rm. 3016, 351 TachéAvenue, Winnipeg, Manitoba, Canada R2H 2A6; Department of Physiology, College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada; Department of Pharmacology and Therapeutics, College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada.
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Apoptosis and molecular targeting therapy in cancer. BIOMED RESEARCH INTERNATIONAL 2014; 2014:150845. [PMID: 25013758 PMCID: PMC4075070 DOI: 10.1155/2014/150845] [Citation(s) in RCA: 726] [Impact Index Per Article: 72.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 05/11/2014] [Indexed: 12/22/2022]
Abstract
Apoptosis is the programmed cell death which maintains the healthy survival/death balance in metazoan cells. Defect in apoptosis can cause cancer or autoimmunity, while enhanced apoptosis may cause degenerative diseases. The apoptotic signals contribute into safeguarding the genomic integrity while defective apoptosis may promote carcinogenesis. The apoptotic signals are complicated and they are regulated at several levels. The signals of carcinogenesis modulate the central control points of the apoptotic pathways, including inhibitor of apoptosis (IAP) proteins and FLICE-inhibitory protein (c-FLIP). The tumor cells may use some of several molecular mechanisms to suppress apoptosis and acquire resistance to apoptotic agents, for example, by the expression of antiapoptotic proteins such as Bcl-2 or by the downregulation or mutation of proapoptotic proteins such as BAX. In this review, we provide the main regulatory molecules that govern the main basic mechanisms, extrinsic and intrinsic, of apoptosis in normal cells. We discuss how carcinogenesis could be developed via defective apoptotic pathways or their convergence. We listed some molecules which could be targeted to stimulate apoptosis in different cancers. Together, we briefly discuss the development of some promising cancer treatment strategies which target apoptotic inhibitors including Bcl-2 family proteins, IAPs, and c-FLIP for apoptosis induction.
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Park GB, Choi Y, Kim YS, Lee HK, Kim D, Hur DY. ROS-mediated JNK/p38-MAPK activation regulates Bax translocation in Sorafenib-induced apoptosis of EBV-transformed B cells. Int J Oncol 2014; 44:977-85. [PMID: 24402682 DOI: 10.3892/ijo.2014.2252] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 12/02/2013] [Indexed: 11/06/2022] Open
Abstract
Sorafenib (SRF) is a multi-kinase inhibitor that has been shown to have antitumor activity against several types of cancers, but the effect of SRF on EBV-transformed B cells is unknown. We report that SRF can induce the apoptosis of EBV-transformed B cells through JNK/p38-MAPK activation. SRF triggered the generation of reactive oxygen species (ROS), translocation of Bax into the mitochondria, disruption of mitochondrial membrane potential, activation of caspase-9, caspase-3 and PARP, and subsequent apoptosis. Moreover, we found that SRF exposure activated the phosphorylation of JNK and p38-MAPK and suppressed the phosphorylation of PI3K-p85 and Akt. N-acetyl-l-cysteine (NAC) inhibited the activation of JNK and p38-MAPK. SP600125 and SB203580 blocked apoptosis and mitochondrial membrane disruption but did not affect ROS production after SRF treatment. These findings provide novel insights into the molecular mechanisms driving SRF-mediated cell death and suggest that SRF could be a potential therapeutic drug for the treatment of EBV-related malignant diseases.
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Affiliation(s)
- Ga Bin Park
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Yunock Choi
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Yeong Seok Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Hyun-Kyung Lee
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
| | - Daejin Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Dae Young Hur
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
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Tonic activation of Bax primes neural progenitors for rapid apoptosis through a mechanism preserved in medulloblastoma. J Neurosci 2014; 33:18098-108. [PMID: 24227720 DOI: 10.1523/jneurosci.2602-13.2013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Commitment to survival or apoptosis within expanding progenitor populations poses distinct risks and benefits to the organism. We investigated whether specialized mechanisms regulate apoptosis in mouse neural progenitors and in the progenitor-derived brain tumor medulloblastoma. Here, we identified constitutive activation of proapoptotic Bax, maintained in check by Bcl-xL, as a mechanism for rapid cell death, common to postnatal neural progenitors and medulloblastoma. We found that tonic activation of Bax in cerebellar progenitors, along with sensitivity to DNA damage, was linked to differentiation state. In cerebellar progenitors, active Bax localized to mitochondria, where it was bound to Bcl-xL. Disruption of Bax:Bcl-xL binding by BH3-mimetic ABT 737 caused rapid apoptosis of cerebellar progenitors and primary murine medulloblastoma cells. Conditional deletion of Mcl-1, in contrast, did not cause death of cerebellar progenitors. Our findings identify a mechanism for the sensitivity of brain progenitors to typical anticancer therapies and reveal that this mechanism persists in medulloblastoma, a malignant brain tumor markedly sensitive to radiation and chemotherapy.
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Koulnis M, Porpiglia E, Hidalgo D, Socolovsky M. Erythropoiesis: from molecular pathways to system properties. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 844:37-58. [PMID: 25480636 DOI: 10.1007/978-1-4939-2095-2_3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Erythropoiesis is regulated through a long-range negative feedback loop, whereby tissue hypoxia stimulates erythropoietin (Epo) secretion, which promotes an increase in erythropoietic rate. However, this long-range feedback loop, by itself, cannot account for the observed system properties of erythropoiesis, namely, a wide dynamic range, stability in the face of random perturbations, and a rapid stress response. Here, we show that three Epo-regulated erythroblast survival pathways each give rise to distinct system properties. The induction of Bcl-xL by signal transducer and activator of transcription 5 (Stat5) is responsive to the rate of change in Epo levels, rather than to its absolute level, and is therefore maximally but transiently activated in acute stress. By contrast, Epo-mediated suppression of the pro-survival Fas and Bim pathways is proportional to the levels of stress/Epo and persists throughout chronic stress. Together, these elements operate in a manner reminiscent of a "proportional-integral-derivative (PID)" feedback controller frequently found in engineering applications. A short-range negative autoregulatory loop within the early erythroblast compartment, operated by Fas/FasL, filters out random noise and controls a reserve pool of early erythroblasts that is poised to accelerate the response to acute stress. Both these properties have previously been identified as inherent to negative regulatory motifs. Finally, we show that signal transduction by Stat5 combines binary and graded modalities, thereby increasing signaling fidelity over the wide dynamic range of Epo found in health and disease.
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Affiliation(s)
- Miroslav Koulnis
- Department of Cancer Biology, University of Massachusetts Medical School, 364 Plantation Street, Lazare Research Building (LRB) Room 440A, 01605, Worcester, MA, USA,
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Zuo H, Lin T, Wang D, Peng R, Wang S, Gao Y, Xu X, Li Y, Wang S, Zhao L, Wang L, Zhou H. Neural cell apoptosis induced by microwave exposure through mitochondria-dependent caspase-3 pathway. Int J Med Sci 2014; 11:426-35. [PMID: 24688304 PMCID: PMC3970093 DOI: 10.7150/ijms.6540] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 02/20/2014] [Indexed: 11/24/2022] Open
Abstract
To determine whether microwave (MW) radiation induces neural cell apoptosis, differentiated PC12 cells and Wistar rats were exposed to 2.856 GHz for 5 min and 15 min, respectively, at an average power density of 30 mW/cm². JC-1 and TUNEL staining detected significant apoptotic events, such as the loss of mitochondria membrane potential and DNA fragmentation, respectively. Transmission electron microscopy and Hoechst staining were used to observe chromatin ultrastructure and apoptotic body formation. Annexin V-FITC/PI double staining was used to quantify the level of apoptosis. The expressions of Bax, Bcl-2, cytochrome c, cleaved caspase-3 and PARP were examined by immunoblotting or immunocytochemistry. Caspase-3 activity was measured using an enzyme-linked immunosorbent assay. The results showed chromatin condensation and apoptotic body formation in neural cells 6h after microwave exposure. Moreover, the mitochondria membrane potential decreased, DNA fragmentation increased, leading to an increase in the apoptotic cell percentage. Furthermore, the ratio of Bax/Bcl-2, expression of cytochrome c, cleaved caspase-3 and PARP all increased. In conclusion, microwave radiation induced neural cell apoptosis via the classical mitochondria-dependent caspase-3 pathway. This study may provide the experimental basis for further investigation of the mechanism of the neurological effects induced by microwave radiation.
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Affiliation(s)
- Hongyan Zuo
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Tao Lin
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China; ; 2. High Magnetic Field Laboratory, Hefei Material Research Institute, Chinese Academy of Science, 350, Shushanhu Road, Shushan District, Hefei 230031, China
| | - Dewen Wang
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Ruiyun Peng
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Shuiming Wang
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Yabing Gao
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Xinping Xu
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Yang Li
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Shaoxia Wang
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Li Zhao
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Lifeng Wang
- 1. Department of Experimental Pathology, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
| | - Hongmei Zhou
- 3. Department of Radiation Protection and Health Physics, Institute of Radiation Medicine, 27, Taiping Road, Haidian District, Beijing 100850, China
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Heat stress: A risk factor for skin carcinogenesis. Cancer Lett 2013; 337:35-40. [DOI: 10.1016/j.canlet.2013.05.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 05/24/2013] [Accepted: 05/27/2013] [Indexed: 11/18/2022]
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Hudson SG, Halleran DR, Nevaldine B, Shapiro A, Hutchison RE, Hahn PJ. Microarray determination of Bcl-2 family protein inhibition sensitivity in breast cancer cells. Exp Biol Med (Maywood) 2013; 238:248-56. [PMID: 23576806 DOI: 10.1177/1535370212474582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study tests the hypothesis that reverse transcription polymerase chain reaction (RT-PCR) microarrays can be used to predict the relative sensitivity to induction of apoptosis in breast cancer cells exposed to inhibitors of antiapoptotic Bcl-2 family proteins. Four cell lines, MDA-MB-231 (MDA-231) and MDA-MB-468 (MDA-468), BT-20 and T47-D were screened for relative expression of Bcl-2 family members A1, Mcl-1, Bcl-2, Bcl-xL and Bcl-w mRNA by RT-PCR microarrays and Western analysis. The four cell lines were treated with 1 μmol/L obatoclax (GX15-070) and/or 2 Gy radiation (RT) and monitored for apoptosis after 48 h. Cell lines showing the highest total fold-increase of Bcl-2 family member mRNA, MDA-231 and MDA-468, also showed the highest levels of apoptosis induction (approximately 70% with obatoclax alone and 82% with obatoclax plus RT). Cell lines with little or no increase in Bcl-2 family mRNA (BT-20 and T47-D) showed less apoptosis (30% following treatment with obatoclax and 42% with obatoclax plus RT). RT-PCR arrays can predict the relative apoptosis response of breast cancer cells to the pan Bcl-2 inhibitor obatoclax alone or when combined with radiation.
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Affiliation(s)
- Sandra G Hudson
- Department of Radiation Oncology, The State University of New York Upstate Medical University, Syracuse, NY 13210, USA.
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37
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Yuan BZ, Chapman J, Ding M, Wang J, Jiang B, Rojanasakul Y, Reynolds SH. TRAIL and proteasome inhibitors combination induces a robust apoptosis in human malignant pleural mesothelioma cells through Mcl-1 and Akt protein cleavages. BMC Cancer 2013; 13:140. [PMID: 23517112 PMCID: PMC3665596 DOI: 10.1186/1471-2407-13-140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 03/12/2013] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Malignant pleural mesothelioma (MPM) is an aggressive malignancy closely associated with asbestos exposure and extremely resistant to current treatments. It exhibits a steady increase in incidence, thus necessitating an urgent development of effective new treatments. METHODS Proteasome inhibitors (PIs) and TNFα-Related Apoptosis Inducing Ligand (TRAIL), have emerged as promising new anti-MPM agents. To develop effective new treatments, the proapoptotic effects of PIs, MG132 or Bortezomib, and TRAIL were investigated in MPM cell lines NCI-H2052, NCI-H2452 and NCI-H28, which represent three major histological types of human MPM. RESULTS Treatment with 0.5-1 μM MG132 alone or 30 ng/mL Bortezomib alone induced a limited apoptosis in MPM cells associated with the elevated Mcl-1 protein level and hyperactive PI3K/Akt signaling. However, whereas 10-20 ng/ml TRAIL alone induced a limited apoptosis as well, TRAIL and PI combination triggered a robust apoptosis in all three MPM cell lines. The robust proapoptotic activity was found to be the consequence of a positive feedback mechanism-governed amplification of caspase activation and cleavage of both Mcl-1 and Akt proteins, and exhibited a relative selectivity in MPM cells than in non-tumorigenic Met-5A mesothelial cells. CONCLUSION The combinatorial treatment using TRAIL and PI may represent an effective new treatment for MPMs.
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Yeretssian G. Effector functions of NLRs in the intestine: innate sensing, cell death, and disease. Immunol Res 2013; 54:25-36. [PMID: 22454103 DOI: 10.1007/s12026-012-8317-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nucleotide-binding and oligomerization domain-like receptors (NLRs) are central regulators of pathogen recognition, the induction of innate immune effectors and inflammation with utmost importance in human diseases such as inflammatory bowel diseases. Most NLRs are key mediators of inflammasome complexes that activate caspase-1 and drive proteolytic processing of pro-inflammatory cytokines; however, a few tightly regulate inflammasome-independent activation of nuclear factor-κB and mitogen-activated protein kinase pathways. NLR signaling has evolved in intestinal epithelial cells to avoid overactive inflammatory responses toward the resident microbiota and to preserve epithelial barrier integrity and functions by maintaining homeostasis. In the present review, I examine new insights into the role of the NLRs in antimicrobial defenses. I pay particular attention to the emerging role of these receptors in engaging a complex cross talk between cell death and innate immunity pathways. Furthermore, I discuss the physiological functions of the NLRs in shaping the innate immune response within the intestine, maintaining homeostasis, inducing tissue repair following injury and promoting tumorigenesis.
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Affiliation(s)
- Garabet Yeretssian
- Department of Medicine, Immunology Institute, Icahn Medical Institute, Mount Sinai School of Medicine, 1425 Madison Avenue, New York, NY 10029, USA.
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Sesso A, Belizário JE, Marques MM, Higuchi ML, Schumacher RI, Colquhoun A, Ito E, Kawakami J. Mitochondrial swelling and incipient outer membrane rupture in preapoptotic and apoptotic cells. Anat Rec (Hoboken) 2012; 295:1647-59. [PMID: 22907871 PMCID: PMC3549475 DOI: 10.1002/ar.22553] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 07/03/2012] [Accepted: 07/16/2012] [Indexed: 12/27/2022]
Abstract
Outer mitochondrial membrane (OMM) rupture was first noted in isolated mitochondria in which the inner mitochondrial membrane (IMM) had lost its selective permeability. This phenomenon referred to as mitochondrial permeability transition (MPT) refers to a permeabilized inner membrane that originates a large swelling in the mitochondrial matrix, which distends the outer membrane until it ruptures. Here, we have expanded previous electron microscopic observations that in apoptotic cells, OMM rupture is not caused by a membrane stretching promoted by a markedly swollen matrix. It is shown that the widths of the ruptured regions of the OMM vary from 6 to 250 nm. Independent of the perforation size, herniation of the mitochondrial matrix appeared to have resulted in pushing the IMM through the perforation. A large, long focal herniation of the mitochondrial matrix, covered with the IMM, was associated with a rupture of the OMM that was as small as 6 nm. Contextually, the collapse of the selective permeability of the IMM may precede or follow the release of the mitochondrial proteins of the intermembrane space into the cytoplasm. When the MPT is a late event, exit of the intermembrane space proteins to the cytoplasm is unimpeded and occurs through channels that transverse the outer membrane, because so far, the inner membrane is impermeable. No channel within the outer membrane can expose to the cytoplasm a permeable inner membrane, because it would serve as a conduit for local herniation of the mitochondrial matrix. Anat Rec, 2012. © 2012 Wiley Periodicals, Inc.
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Affiliation(s)
- A Sesso
- Setor de Biologia Estrutural, Laboratório de Imunopatologia, Instituto de Medicina Tropical, Universidade de São Paulo, São Paulo, Brazil.
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Mohan S, Abdelwahab SI, Kamalidehghan B, Syam S, May KS, Harmal NSM, Shafifiyaz N, Hadi AHA, Hashim NM, Rahmani M, Taha MME, Cheah SC, Zajmi A. Involvement of NF-κB and Bcl2/Bax signaling pathways in the apoptosis of MCF7 cells induced by a xanthone compound Pyranocycloartobiloxanthone A. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2012; 19:1007-1015. [PMID: 22739412 DOI: 10.1016/j.phymed.2012.05.012] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 03/14/2012] [Accepted: 05/14/2012] [Indexed: 06/01/2023]
Abstract
The plant Artocarpus obtusus is a tropical plant that belongs to the family Moraceae. In the present study a xanthone compound Pyranocycloartobiloxanthone A (PA) was isolated from this plant and the apoptosis mechanism was investigated. PA induced cytotoxicity was observed using MTT assay. High content screening (HCS) was used to observe the nuclear condensation, cell permeability, mitochondrial membrane potential (MMP) and cytochrome c release. Reactive oxygen species formation was investigated on treated cells by using fluorescent analysis. Human apoptosis proteome profiler assays were performed to investigate the mechanism of cell death. In addition mRNA levels of Bax and Bcl2 were also checked using RT-PCR. Caspase 3/7, 8 and 9 were measured for their induction while treatment. The involvement of NF-κB was analyzed using HCS assay. The results showed that PA possesses the characteristics of selectively inducing cell death of tumor cells as no inhibition was observed in non-tumorigenic cells even at 30 μg/ml. Treatment of MCF7 cells with PA induced apoptosis with cell death-transducing signals, that regulate the MMP by down-regulation of Bcl2 and up-regulation of Bax, triggering the cytochrome c release from mitochondria to cytosol. The release of cytochrome c triggered the activation of caspases-9, then activates downstream executioner caspase-3/7 and consequently cleaved specific substrates leading to apoptotic changes. This form of apoptosis was found closely associated with the extrinsic pathway caspase (caspase-8) and inhibition of translocation of NF-κB from cytoplasm to nucleus. The results demonstrated that PA induced apoptosis of MCF7 cells through NF-κB and Bcl2/Bax signaling pathways with the involvement of caspases.
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Affiliation(s)
- Syam Mohan
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Kim YB, Balasis ME, Doi K, Berndt N, DuBoulay C, Hu CCA, Guida W, Wang HG, Sebti SM, Del Valle JR. Synthesis and evaluation of substituted hexahydronaphthalenes as novel inhibitors of the Mcl-1/BimBH3 interaction. Bioorg Med Chem Lett 2012; 22:5961-5. [PMID: 22901384 DOI: 10.1016/j.bmcl.2012.07.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 07/10/2012] [Accepted: 07/12/2012] [Indexed: 01/03/2023]
Abstract
Mcl-1, an anti-apoptotic member of the Bcl-2 protein family, is overexpressed in a broad range of human cancers and plays a critical role in conferring resistance to chemotherapy. In the course of screening a natural product-like library of sesquiterpenoid analogs, we identified substituted hexahydronaphthalenes that showed activity against the Mcl-1/BimBH3 interaction in vitro. Here, we describe the synthesis of a small library of analogs and their biological evaluation. The most potent inhibitor in the series (19) exhibits an IC(50) of 8.3 μM by ELISA and disrupts the interaction between endogenously expressed Mcl-1 and Bim in cultured MDA-MB-468 breast cancer cells.
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Affiliation(s)
- Young B Kim
- Drug Discovery Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
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Fluazinam targets mitochondrial complex I to induce reactive oxygen species-dependent cytotoxicity in SH-SY5Y cells. Neurochem Int 2012; 60:773-81. [DOI: 10.1016/j.neuint.2012.03.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 03/05/2012] [Accepted: 03/13/2012] [Indexed: 11/17/2022]
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You L, Wang Y, Jin Y, Qian W. Downregulation of Mcl-1 synergizes the apoptotic response to combined treatment with cisplatin and a novel fiber chimeric oncolytic adenovirus. Oncol Rep 2012; 27:971-8. [PMID: 22266706 PMCID: PMC3583558 DOI: 10.3892/or.2012.1636] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 11/14/2011] [Indexed: 01/30/2023] Open
Abstract
The aim of this study was to examine the effects of SG511, a novel fiber chimeric oncolytic adenovirus with E1B 55-kDa deleted, combined with cisplatin on cancer cells and to identify their underlying mechanisms. The combined effect of SG511 and cisplatin on HeLa and HT-29 cells was assessed by a crystal violet assay and an MTT assay, followed by combination index analysis. Cell apoptosis was evaluated by DAPI staining and visualized by fluorescein-mediated signal detection. Mitochondrial membrane potential was detected by flow cytometric analysis of Rhodamine 123 accumulation. The activation of the caspase pathway and the expression of Bcl-2 family proteins were examined by western blotting. Results show that SG511 vector infected various human cancer cell lines and induced growth inhibition effectively. Of note, SG511 synergistically enhanced the anti-proliferative activity of cisplatin, a DNA-damaging agent, against HeLa and HT-29 cells in vitro, concomitantly with increased apoptosis and activation of the mitochondrial pathway. Furthermore, treatment with SG511 alone or in combination with cisplatin resulted in reduced expression the anti-apoptotic Bcl-2 family member Mcl-1 in HeLa and HT-29 cells. Importantly, this combination did not increase the growth inhibitory effects of cisplatin on human normal liver cells. Collectively, SG511, a novel fiber chimeric oncolytic adenovirus, sensitizes cancer cells to apoptosis by reducing anti-apoptotic Mcl-1 protein levels.
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Affiliation(s)
- Liangshun You
- Institute of Hematology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, PR China
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Premkumar DR, Jane EP, Agostino NR, DiDomenico JD, Pollack IF. Bortezomib-induced sensitization of malignant human glioma cells to vorinostat-induced apoptosis depends on reactive oxygen species production, mitochondrial dysfunction, Noxa upregulation, Mcl-1 cleavage, and DNA damage. Mol Carcinog 2011; 52:118-33. [PMID: 22086447 DOI: 10.1002/mc.21835] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 10/04/2011] [Accepted: 10/12/2011] [Indexed: 01/12/2023]
Abstract
Glioblastomas are invasive tumors with poor prognosis despite current therapies. Histone deacetylase inhibitors (HDACIs) represent a class of agents that can modulate gene expression to reduce tumor growth, and we and others have noted some antiglioma activity from HDACIs, such as vorinostat, although insufficient to warrant use as monotherapy. We have recently demonstrated that proteasome inhibitors, such as bortezomib, dramatically sensitized highly resistant glioma cells to apoptosis induction, suggesting that proteasomal inhibition may be a promising combination strategy for glioma therapeutics. In this study, we examined whether bortezomib could enhance response to HDAC inhibition in glioma cells. Although primary cells from glioblastoma multiforme (GBM) patients and established glioma cell lines did not show significant induction of apoptosis with vorinostat treatment alone, the combination of vorinostat plus bortezomib significantly enhanced apoptosis. The enhanced efficacy was due to proapoptotic mitochondrial injury and increased generation of reactive oxygen species. Our results also revealed that combination of bortezomib with vorinostat enhanced apoptosis by increasing Mcl-1 cleavage, Noxa upregulation, Bak and Bax activation, and cytochrome c release. Further downregulation of Mcl-1 using shRNA enhanced cell killing by the bortezomib/vorinostat combination. Vorinostat induced a rapid and sustained phosphorylation of histone H2AX in primary GBM and T98G cells, and this effect was significantly enhanced by co-administration of bortezomib. Vorinostat/bortezomib combination also induced Rad51 downregulation, which plays an important role in the synergistic enhancement of DNA damage and apoptosis. The significantly enhanced antitumor activity that results from the combination of bortezomib and HDACIs offers promise as a novel treatment for glioma patients.
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Affiliation(s)
- Daniel R Premkumar
- Department of Neurosurgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15223, USA
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Gu X, Yao Y, Cheng R, Zhang Y, Dai Z, Wan G, Yang Z, Cai W, Gao G, Yang X. Plasminogen K5 activates mitochondrial apoptosis pathway in endothelial cells by regulating Bak and Bcl-x(L) subcellular distribution. Apoptosis 2011; 16:846-55. [PMID: 21656147 DOI: 10.1007/s10495-011-0618-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Plasminogen Kringle 5(K5) is a proteolytic fragment of plasminogen, which displays potent anti-angiogenic activities. K5 has been shown to induce apoptosis in proliferating endothelial cells; however the exact mechanism has not been well explored. The present study was designed to elucidate the possible molecular mechanism of K5-induced endothelial cell apoptosis. Our results showed that K5 inhibited basic fibroblast growth factors activated in human umbilical vein endothelial cells (HUVECs), indicating proliferation in a dose-dependent manner and induced endothelial cell death via apoptosis. K5 exposure activated caspase 7, 8 and 9. These results suggested that both the intrinsic mitochondrial apoptosis pathway and extrinsic pathway might be involved in K5-induced apoptosis. K5 reduced mitochondrial membrane potential (MMP) of HUVECs, demonstrating mitochondrial depolarization in HUVECs. K5 increased the ratio of Bak to Bcl-x(L) on mitochondria, decreased the ratio in cytosol, and had no effect on the total amounts of these proteins. K5 also did not effect on Bax/Bcl-2 distribution. K5 increased the ratio of Bak to Bcl-x(L) on mitochondrial that resulted in mitochondrial depolarization, cytochrome c release and consequently the cleavage of caspase 9. These results suggested that K5 induces endothelial cell apoptosis at least in part via activating mitochondrial apoptosis pathway. The regulation of K5 on Bak and Bcl-x(L) distribution may play an important role in endothelial cell apoptosis. These results provide further insight into the anti-angiogenesis roles of K5 in angiogenesis-related ocular diseases and solid tumors.
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Affiliation(s)
- Xiaoqiong Gu
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
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Dong Y, Yin S, Li J, Jiang C, Ye M, Hu H. Bufadienolide compounds sensitize human breast cancer cells to TRAIL-induced apoptosis via inhibition of STAT3/Mcl-1 pathway. Apoptosis 2011; 16:394-403. [PMID: 21259053 DOI: 10.1007/s10495-011-0573-5] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The death receptor ligand TRAIL is considered a promising candidate for cancer therapy because of its preferential toxicity to malignant cells. However its efficacy has been challenged by a number of resistance mechanisms. Therefore, agents that can overcome the resistance to enhance therapeutic efficacy of TRAIL are needed. In the current study, we found that bufalin, bufotalin and gamabufotalin, key members of bufadienolides isolated from a traditional Chinese medicine ChanSu, significantly potentiated human breast cancer cells with different status of ER-alpha to apoptosis induction of TRAIL, as evidenced by enhanced Annexin V/FITC positive cells (apoptotic cells), cytoplasmic histone-associated-DNA-fragments, membrane permeability transition (MPT), caspases activation and PARP cleavage. Further mechanistic investigation demonstrated that bufalin was able to significantly decrease Mcl-1 expression and modestly decrease Bcl-XL expression level. Down-regulations of these anti-apoptotic proteins were well correlated with inhibition of transcription factor STAT3 activation. The important consequence of down-regulation Mcl-1 in the enhancement action by combining bufalin with TRAIL was confirmed by either knockdown or overexpression of Mcl-1 approach. Our findings for the first time provided strong evidences that bufadienolide compounds have excellent potential to be developed as a novel class of sensitizers of TRAIL.
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Affiliation(s)
- Yinhui Dong
- Division of Nutrition and Health, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing, China
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Kulkarni SS, Hu X, Doi K, Wang HG, Manetsch R. Screening of protein-protein interaction modulators via sulfo-click kinetic target-guided synthesis. ACS Chem Biol 2011; 6:724-32. [PMID: 21506574 DOI: 10.1021/cb200085q] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Kinetic target-guided synthesis (TGS) and in situ click chemistry are among unconventional discovery strategies having the potential to streamline the development of protein-protein interaction modulators (PPIMs). In kinetic TGS and in situ click chemistry, the target is directly involved in the assembly of its own potent, bidentate ligand from a pool of reactive fragments. Herein, we report the use and validation of kinetic TGS based on the sulfo-click reaction between thio acids and sulfonyl azides as a screening and synthesis platform for the identification of high-quality PPIMs. Starting from a randomly designed library consisting of 9 thio acids and 9 sulfonyl azides leading to 81 potential acylsulfonamides, the target protein, Bcl-X(L), selectively assembled four PPIMs, acylsulfonamides SZ4TA2, SZ7TA2, SZ9TA1, and SZ9TA5, which have been shown to modulate Bcl-X(L)/BH3 interactions. To further investigate the Bcl-X(L) templation effect, control experiments were carried out using two mutants of Bcl-X(L). In one mutant, phenylalanine Phe131 and aspartic acid Asp133, which are critical for the BH3 domain binding, were substituted by alanines, while arginine Arg139, a residue identified to play a crucial role in the binding of ABT-737, a BH3 mimetic, was replaced by an alanine in the other mutant. Incubation of these mutants with the reactive fragments and subsequent LC/MS-SIM analysis confirmed that these building block combinations yield the corresponding acylsulfonamides at the BH3 binding site, the actual "hot spot" of Bcl-X(L). These results validate kinetic TGS using the sulfo-click reaction as a valuable tool for the straightforward identification of high-quality PPIMs.
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Affiliation(s)
- Sameer S. Kulkarni
- Department of Chemistry, University of South Florida, CHE 205, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Xiangdong Hu
- Department of Chemistry, University of South Florida, CHE 205, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Kenichiro Doi
- Department of Pharmacology and Penn State Hershey Cancer Institute, Penn State College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, United States
| | - Hong-Gang Wang
- Department of Pharmacology and Penn State Hershey Cancer Institute, Penn State College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, United States
| | - Roman Manetsch
- Department of Chemistry, University of South Florida, CHE 205, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
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Kumar A, Byun HS, Bittman R, Saba JD. The sphingolipid degradation product trans-2-hexadecenal induces cytoskeletal reorganization and apoptosis in a JNK-dependent manner. Cell Signal 2011; 23:1144-52. [PMID: 21385609 PMCID: PMC3086202 DOI: 10.1016/j.cellsig.2011.02.009] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 02/28/2011] [Indexed: 12/23/2022]
Abstract
The bioactive signaling molecule D-erythro-sphingosine-1-phosphate (S1P) is irreversibly degraded by the enzyme S1P lyase (SPL). The reaction of SPL with C18-S1P generates ethanolamine phosphate and a long-chain fatty aldehyde, trans-2-hexadecenal. Modulation of SPL expression in cells and organisms produces significant phenotypes, most of which have been attributed to corresponding changes in S1P-dependent signaling. However, the physiological functions of SPL products are not well understood. In the present study, we explored the biological activities of trans-2-hexadecenal in human and murine cells. We demonstrate that trans-2-hexadecenal causes cytoskeletal reorganization leading to cell rounding, detachment and eventual cell death by apoptosis in multiple cell types, including HEK293T, NIH3T3 and HeLa cells. Trans-2-hexadecenal stimulated a signaling pathway involving MLK3 and the respective phosphorylation of MKK4/7 and JNK, whereas ERK, AKT and p38 were unaffected. Trans-2-hexadecenal-induced apoptosis was accompanied by activation of downstream targets of JNK including c-Jun phosphorylation, cytochrome c release, Bax activation, Bid cleavage and increased translocation of Bim into mitochondria. The antioxidant N-acetylcysteine prevented JNK activation by trans-2-hexadecenal. Further, inhibition of JNK abrogated the cytoskeletal changes and apoptosis caused by trans-2-hexadecenal, whereas Rac1 and RhoA were not involved. In conclusion, our studies provide a new paradigm of sphingolipid signaling by demonstrating for the first time that S1P metabolism generates a bioactive product that induces cellular effects through oxidant stress-dependent MAP kinase cell signaling.
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Affiliation(s)
- Ashok Kumar
- Center for Cancer Research, Children’s Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA, AK:
| | - Hoe-Sup Byun
- Queens College of the City University of New York, Department of Chemistry and Biochemistry, Flushing, NY 11367, USA, RB: ; HSB:
| | - Robert Bittman
- Queens College of the City University of New York, Department of Chemistry and Biochemistry, Flushing, NY 11367, USA, RB: ; HSB:
| | - Julie D. Saba
- Center for Cancer Research, Children’s Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA, AK:
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Nijboer CH, Heijnen CJ, van der Kooij MA, Zijlstra J, van Velthoven CTJ, Culmsee C, van Bel F, Hagberg H, Kavelaars A. Targeting the p53 pathway to protect the neonatal ischemic brain. Ann Neurol 2011; 70:255-64. [PMID: 21674585 DOI: 10.1002/ana.22413] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 02/06/2011] [Accepted: 02/25/2011] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To investigate whether inhibition of mitochondrial p53 association using pifithrin-μ (PFT-μ) represents a potential novel neuroprotective strategy to combat perinatal hypoxic-ischemic (HI) brain damage. METHODS Seven-day-old rats were subjected to unilateral carotid artery occlusion and hypoxia followed by intraperitoneal treatment with PFT-μ, an inhibitor of p53 mitochondrial association or PFT-α an inhibitor of p53 transcriptional activity. Cerebral damage, sensorimotor and cognitive function, apoptotic pathways (cytosolic cytochrome c, Smac/DIABLO, active caspase 3), and oxidative stress (lipid peroxidation and PARP-1 cleavage) were investigated. RESULTS PFT-μ treatment completely prevented the HI-induced increase in mitochondrial p53 association at 3 hours and reduced neuronal damage at 48 hours post-HI. PFT-μ had long-term (6-10 weeks post-HI) beneficial effects as sensorimotor and cognitive outcome improved and infarct size was reduced by ~79%. Neuroprotection by PFT-μ treatment was associated with strong inhibition of apoptotic pathways and reduced oxidative stress. Unexpectedly, PFT-μ also inhibited HI-induced upregulation of p53 target genes. However, the neuroprotective effect of inhibiting only p53 transcriptional activity by PFT-α was significantly smaller and did not involve reduced oxidative stress. INTERPRETATION We are the first to show that prevention of mitochondrial p53 association by PFT-μ strongly improves functional outcome and decreases lesion size after neonatal HI. PFT-μ not only inhibits mitochondrial release of cytochrome c, but also inhibits oxidative stress. We propose that as a consequence nuclear accumulation of p53 and transcription of proapoptotic target genes are prevented. In conclusion, targeting p53 mitochondrial association by PFT-μ may develop into a novel and powerful neuroprotective strategy.
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Affiliation(s)
- Cora H Nijboer
- Laboratory of Neuroimmunology and Developmental Origins of Disease, University Medical Center Utrecht, Utrecht, The Netherlands
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