351
|
Li X, Heimann K, Dinh XT, Keene FR, Collins JG. Biological processing of dinuclear ruthenium complexes in eukaryotic cells. MOLECULAR BIOSYSTEMS 2016; 12:3032-45. [PMID: 27453040 DOI: 10.1039/c6mb00431h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The biological processing - mechanism of cellular uptake, effects on the cytoplasmic and mitochondrial membranes, intracellular sites of localisation and induction of reactive oxygen species - of two dinuclear polypyridylruthenium(ii) complexes has been examined in three eukaryotic cells lines. Flow cytometry was used to determine the uptake of [{Ru(phen)2}2{μ-bb12}](4+) (Rubb12) and [Ru(phen)2(μ-bb7)Ru(tpy)Cl](3+) {Rubb7-Cl, where phen = 1,10-phenanthroline, tpy = 2,2':6',2''-terpyridine and bbn = bis[4(4'-methyl-2,2'-bipyridyl)]-1,n-alkane} in baby hamster kidney (BHK), human embryonic kidney (HEK-293) and liver carcinoma (HepG2) cell lines. The results demonstrated that the major uptake mechanism for Rubb12 and Rubb7-Cl was active transport, although with a significant contribution from carrier-assisted diffusion for Rubb12 and passive diffusion for Rubb7-Cl. Flow cytometry coupled with Annexin V/TO-PRO-3 double-staining was used to compare cell death by membrane damage or apoptosis. Rubb12 induced significant direct membrane damage, particularly with HepG2 cells, while Rubb7-Cl caused considerably less membrane damage but induced greater levels of apoptosis. Confocal microscopy, coupled with JC-1 assays, demonstrated that Rubb12 depolarises the mitochondrial membrane, whereas Rubb7-Cl had a much smaller affect. Cellular localisation experiments indicated that Rubb12 did not accumulate in the mitochondria, whereas significant mitochondrial accumulation was observed for Rubb7-Cl. The effect of Rubb12 and Rubb7-Cl on intracellular superoxide dismutase activity showed that the ruthenium complexes could induce cell death via a reactive oxygen species-mediated pathway. The results of this study demonstrate that Rubb12 predominantly kills eukaryotic cells by damaging the cytoplasmic membrane. As this dinuclear ruthenium complex has been previously shown to exhibit greater toxicity towards bacteria than eukaryotic cells, the results of the present study suggest that metal-based cationic oligomers can achieve selective toxicity against bacteria, despite exhibiting a non-specific membrane damage mechanism of action.
Collapse
Affiliation(s)
- Xin Li
- School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Australian Defence Force Academy, Canberra, ACT 2600, Australia.
| | | | | | | | | |
Collapse
|
352
|
Epigenetic silencing of miR-19a-3p by cold atmospheric plasma contributes to proliferation inhibition of the MCF-7 breast cancer cell. Sci Rep 2016; 6:30005. [PMID: 27445062 PMCID: PMC4956745 DOI: 10.1038/srep30005] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 06/28/2016] [Indexed: 12/29/2022] Open
Abstract
Cold atmospheric plasma (CAP) has been proposed as a useful cancer treatment option after showing higher induction of cell death in cancer cells than in normal cells. Although a few studies have contributed to elucidating the molecular mechanism by which CAP differentially inhibits cancer cell proliferation, no results are yet to be reported related to microRNA (miR). In this study, miR-19a-3p (miR-19a) was identified as a mediator of the cell proliferation-inhibitory effect of CAP in the MCF-7 breast cancer cell. CAP treatment of MCF-7 induced hypermethylation at the promoter CpG sites and downregulation of miR-19a, which was known as an oncomiR. The overexpression of miR-19a in MCF-7 increased cell proliferation, and CAP deteriorated the effect. The target genes of miR-19a, such as ABCA1 and PTEN, that had been suppressed by miR recovered their expression through CAP treatment. In addition, an inhibitor of reactive oxygen species that is produced by CAP suppressed the effect of CAP on cell proliferation. Taken together, the present study, to the best of authors’ knowledge, is the first to identify the involvement of a miR, which is dysregulated by the CAP and results in the anti-proliferation effect of CAP on cancer cells.
Collapse
|
353
|
The combination of bleomycin with suicide or interferon-β gene transfer is able to efficiently eliminate human melanoma tumor initiating cells. Biomed Pharmacother 2016; 83:290-301. [PMID: 27399807 DOI: 10.1016/j.biopha.2016.06.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/23/2016] [Accepted: 06/16/2016] [Indexed: 12/30/2022] Open
Abstract
We explored the potential of a chemogene therapy combination to eradicate melanoma tumor initiating cells, key producers of recurrence and metastatic spread. Three new human melanoma cell lines, two obtained from lymph nodes and one from spleen metastasis were established and characterized. They were cultured as monolayers and spheroids and, in both spatial configurations they displayed sensitivity to single treatments with bleomycin (BLM) or human interferon-β (hIFNβ) gene or herpes simplex virus thymidine kinase/ganciclovir suicide gene (SG) lipofection. However, the combination of bleomycin with SG or hIFNβ gene transfer displayed greater antitumor efficacy. The three cell lines exhibited a proliferative behavior consistent with melan A and gp100 melanoma antigens expression, and BRAF V600E mutation. BLM and both genetic treatments increased the fraction of more differentiated and treatment-sensitive cells. Simultaneously, they significantly decreased the sub-population of tumor initiating cells. There was a significant correlation between the cytotoxicity of treatments with BLM and gene transfer and the fraction of cells exhibiting (i) high proliferation index, and (ii) high intracellular levels of reactive oxygen species. Conversely, the fraction of cells surviving to our treatments closely paralleled their (i) colony and (ii) melanosphere forming capacity. A very significant finding was that the combination of BLM with SG or hIFNβ gene almost abrogated the clonogenic capacity of the surviving cells. Altogether, the results presented here suggest that the combined chemo-gene treatments are able to eradicate tumor initiating cells, encouraging further studies aimed to apply this strategy in the clinic.
Collapse
|
354
|
Kobayashi T, Tomomatsu J, Fukada I, Shibayama T, Teruya N, Ito Y, Iwase T, Ohno S, Takahashi S. Eribulin-induced liver dysfunction as a prognostic indicator of survival of metastatic breast cancer patients: a retrospective study. BMC Cancer 2016; 16:404. [PMID: 27389013 PMCID: PMC4936231 DOI: 10.1186/s12885-016-2436-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 06/20/2016] [Indexed: 01/03/2023] Open
Abstract
Background Eribulin is a non-taxane, microtubule dynamics inhibitor that increases survival of patients with metastatic breast cancer. Although eribulin is well tolerated in patients with heavily pretreated disease, eribulin-induced liver dysfunction (EILD) can occur, resulting in treatment modification and subsequent poor disease control. We aimed to clarify the effect of EILD on patient survival. Methods The medical records of 157 metastatic breast cancer patients treated with eribulin between July 2011 and November 2013 at Cancer Institute Hospital were retrospectively analyzed. EILD was defined as 1) an increase in alanine aminotransferase or aspartate aminotransferase levels >3 times the upper limit of normal, and/or 2) initiation of a liver-supporting oral drug therapy such as ursodeoxycholic acid or glycyron. Fatty liver was defined as a decrease in the liver-to-spleen attenuation ratio to <0.9 on a computed tomography scan. Results EILD occurred in 42 patients, including one patient for whom eribulin treatment was discontinued due to severe EILD. The patients who developed EILD had significantly higher body mass indices (BMIs) than those who did not develop EILD (24.5 vs. 21.5, respectively; P < 0.0001), with no difference in the dose intensity of eribulin between the two groups (P = 0.76). Interestingly, the patients with EILD exhibited significantly longer progression-free survival (PFS) and overall survival (OS) than those without EILD (P = 0.010 and P = 0.032, respectively). Similarly, among 80 patients without liver metastasis, 19 with EILD exhibited significantly longer PFS and OS than the others (P = 0.0012 and P = 0.044, respectively), and EILD was an independent prognostic factor of PFS (P = 0.0079) in multivariate analysis. During eribulin treatment, 18 patients developed fatty liver, 11 of whom developed EILD, with a median BMI of 26.7. Conclusions Although EILD and fatty liver occurred at a relatively high frequency in our study, most of the patients did not experience severe adverse effects. Surprisingly, the development of EILD was positively associated with patient survival, especially in patients without liver metastases. EILD may be a clinically useful predictive biomarker of survival, but further studies are needed to confirm these findings in another cohort of patients.
Collapse
Affiliation(s)
- Takayuki Kobayashi
- Department of Medical oncology, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan.
| | - Jyunichi Tomomatsu
- Department of Medical oncology, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Ippei Fukada
- Department of Breast Medical Oncology, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Tomoko Shibayama
- Department of Breast Medical Oncology, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Natsuki Teruya
- Department of Surgical Oncology, Breast Oncology Center, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Yoshinori Ito
- Department of Breast Medical Oncology, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Takuji Iwase
- Department of Surgical Oncology, Breast Oncology Center, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Shinji Ohno
- Department of Surgical Oncology, Breast Oncology Center, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Shunji Takahashi
- Department of Medical oncology, Cancer Institute Hospital, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan
| |
Collapse
|
355
|
Ma J, Li J, Wang KS, Mi C, Piao LX, Xu GH, Li X, Lee JJ, Jin X. Perillyl alcohol efficiently scavenges activity of cellular ROS and inhibits the translational expression of hypoxia-inducible factor-1α via mTOR/4E-BP1 signaling pathways. Int Immunopharmacol 2016; 39:1-9. [PMID: 27394002 DOI: 10.1016/j.intimp.2016.06.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 06/24/2016] [Accepted: 06/30/2016] [Indexed: 01/11/2023]
Abstract
Perillyl alcohol (POH) is a dietary monoterpene present in a variety of plants with a pure or mixed form, and it is one of the very few natural substances with anticancer activity. However, the mechanism by which POH unleashes its anticancer activity in tumor cells remains unclear. We here demonstrated the effect of POH on hypoxia-inducible factor-1α (HIF-1α) activation. POH showed the potent inhibitory activity against HIF-1 activation induced by hypoxia in various human cancer cell lines and efficient scavenging activity of cellular Reactive oxygen species (ROS) by hypoxia in tumor cells. Further analysis revealed that POH inhibited HIF-1α protein synthesis, without affecting the expression level of HIF-1α mRNA or degradation of HIF-1α protein. Moreover, we found that suppression of HIF-1α accumulation by POH correlated with strong de-phosphorylation of mammalian target of rapamycin (mTOR) and eIF4E binding protein-1 (4E-BP1), and eukaryotic initiation factor 4E (eIF4E). These results showed that POH inhibited HIF-1α protein synthesis through the inhibition of mTOR/4E-BP1 signaling pathways. Furthermore, POH increased the expression of p53, p21, induced cell cycle arrest in the G1 phase as well as decreased cyclin D1, c-Myc, and Skp2 expression. In vivo studies further confirmed the inhibitory effect of POH on the expression of HIF-1α proteins, leading to a decrease growth of HCT116 cells in a xenograft tumor model. There results show that POH is an effective inhibitor of HIF-1 and provide new perspectives in to the mechanism of its anticancer activity.
Collapse
Affiliation(s)
- Juan Ma
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Jing Li
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Ke Si Wang
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Chunliu Mi
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Lian Xun Piao
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Guang Hua Xu
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xuezheng Li
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Jung Joon Lee
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xuejun Jin
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| |
Collapse
|
356
|
Akbarzadeh M, Nouri M, Banekohal MV, Cheraghi O, Tajalli H, Movassaghpour A, Soltani S, Cheraghi H, Feizy N, Montazersaheb S, Rahbarghazi R, Samadi N. Effects of combination of melatonin and laser irradiation on ovarian cancer cells and endothelial lineage viability. Lasers Med Sci 2016; 31:1565-1572. [PMID: 27365110 DOI: 10.1007/s10103-016-2016-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 06/24/2016] [Indexed: 01/09/2023]
Abstract
The main goal of anti-cancer therapeutic approaches is to induce apoptosis in tumor masses but not in the normal tissues. Nevertheless, the combination of photodynamic irradiation with complementary oncostatic agents contributes to better therapeutic performance. Here, we applied two different cell lines; SKOV3 ovarian carcinoma cells and HUVECs umbilical cord cells as in vitro models to pinpoint whether pharmacological concentration of melatonin in combination with photodynamic therapy induces cell cytotoxicity. The cells were separately treated with various concentrations of melatonin (0 to 10 mM) and photodynamic irradiation alone or in combination. Cells were preliminary exposed to increasing concentrations of melatonin for 24 h and subsequently underwent laser irradiation for 60 s with an output power of 80 mW in continuous mode at 675 nm wavelength and a total light dose of 13.22 J/cm2. Cell viability, apoptosis/necrosis rates, and reactive oxygen species levels as well as heat shock protein 70 expression were monitored after single and combined treatments. A statistical analysis was performed by applying one-way analysis of variance (ANOVA) and post hoc Tukey's test. Combination treatment of both cell lines caused a marked increase in apoptosis/necrosis rate, reactive oxygen species generation, and heat shock protein 70 expression compared to incubation of the cells with each agent alone (p < 0.05). SKOV3 cancer cells expressed higher level of heat shock protein 70 under experimental procedure as compared to HUVECs (p < 0.05). Our results introduce melatonin as a potent stimulus for enhancing the efficacy of laser on induction of apoptosis in tumor cells.
Collapse
Affiliation(s)
- Maryam Akbarzadeh
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran.,Department of Clinical Biochemistry and Laboratory Medicine, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran
| | - Mohammad Nouri
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran
| | - Maryam Vahidi Banekohal
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran
| | - Omid Cheraghi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran.,Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Habib Tajalli
- Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran
| | - Aliakbar Movassaghpour
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sina Soltani
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran
| | - Hadi Cheraghi
- Department of Clinical Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Navid Feizy
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran.,Department of Clinical Biochemistry and Laboratory Medicine, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran
| | - Soheila Montazersaheb
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran.
| | - Nasser Samadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran. .,Department of Clinical Biochemistry and Laboratory Medicine, Tabriz University of Medical Sciences, Imam Reza St., Golgasht St., 5166614756, Tabriz, Iran.
| |
Collapse
|
357
|
Taparia SS, Khanna A. Procyanidin-rich extract of natural cocoa powder causes ROS-mediated caspase-3 dependent apoptosis and reduction of pro-MMP-2 in epithelial ovarian carcinoma cell lines. Biomed Pharmacother 2016; 83:130-140. [PMID: 27470560 DOI: 10.1016/j.biopha.2016.06.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 06/08/2016] [Accepted: 06/10/2016] [Indexed: 11/17/2022] Open
Abstract
Over the last four centuries, cocoa and chocolate have been described as having potential medicinal value. As of today, Theobroma cacao L. (Sterculiaceae) and its products are consumed worldwide. They are of great research interest because of the concentration dependent antioxidant as well as pro-oxidant properties of some of their polyphenolic constituents, specially procyanidins and flavan-3-ols such as catechin. This study was aimed at investigating the cellular and molecular changes associated with cytotoxicity, caused due pro-oxidant activity of cocoa catechins and procyanidins, in ovarian cancer cell lines. Extract of non-alkalized cocoa powder enriched with catechins and procyanidins was used to treat human epithelial ovarian cancer cell lines OAW42 and OVCAR3 at various concentrations ≤1000μg/mL. The effect of treatment on intracellular reactive oxygen species (ROS) levels was determined. Apoptotic cell death, post treatment, was evaluated microscopically and using flow cytometry by means of annexin-propidium iodide (PI) dual staining. Levels of active caspase-3 as a pro-apoptotic marker and matrix metalloproteinase 2 (MMP2) as an invasive potential marker were detected using Western blotting and gelatin zymography. Treatment with extract caused an increase in intracellular ROS levels in OAW42 and OVCAR3 cell lines. Bright field and fluorescence microscopy of treated cells revealed apoptotic morphology and DNA damage. Increase in annexin positive cell population and dose dependent upregulation of caspase-3 confirmed apoptotic cell death. pro-MMP2 was found to be downregulated in a dose dependent manner in cells treated with the extract. Treated cells also showed a reduction in MMP2 activity. Our data suggests that cocoa catechins and procyanidins are cytotoxic to epithelial ovarian cancer, inducing apoptotic morphological changes, DNA damage and caspase-3 mediated cell death. Downregulation of pro-MMP2 and reduction in active MMP2 levels imply a decrease in invasive potential of the cells. Apoptosis and MMP2 downregulation appear to be linked to the increase in intracellular ROS levels, caused due to the prooxidant effect of cocoa procyanidin extract.
Collapse
Affiliation(s)
- Shruti Sanjay Taparia
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS (deemed-to-be) University, Vile Parle (West), Mumbai 400056, India
| | - Aparna Khanna
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS (deemed-to-be) University, Vile Parle (West), Mumbai 400056, India.
| |
Collapse
|
358
|
Dong X, Zhang Z, Zhao J, Lei J, Chen Y, Li X, Chen H, Tian J, Zhang D, Liu C, Liu C. The rational design of specific SOD1 inhibitors via copper coordination and their application in ROS signaling research. Chem Sci 2016; 7:6251-6262. [PMID: 30034766 PMCID: PMC6024207 DOI: 10.1039/c6sc01272h] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/15/2016] [Indexed: 12/12/2022] Open
Abstract
Efficient methods for the regulation of intracellular O2˙- and H2O2 levels, without altering intracellular processes, are urgently required for the rapidly growing interest in ROS signaling, as ROS signaling has been confirmed to be involved in a series of basic cellular processes including proliferation, differentiation, growth and migration. Intracellular H2O2 is formed mainly via the catalytic dismutation of O2˙- by SODs including SOD1, SOD2 and SOD3. Thus, the intracellular levels of O2˙- and H2O2 can directly be controlled through regulating SOD1 activity. Here, based on the active site structure and catalytic mechanism of SOD1, we developed a new type of efficient and specific SOD1 inhibitors which can directly change the intracellular levels of H2O2 and O2˙-. These inhibitors inactivate intracellular SOD1 via localization into the SOD1 active site, thereby coordinating to the Cu2+ in the active site of SOD1, blocking the access of O2˙- to Cu2+, and breaking the Cu2+/Cu+ catalytic cycle essential for O2˙- dismutation. The reduced ERK1/2 phosphorylation induced by the specific SOD1 inactivation-mediated decrease of intracellular H2O2 levels reveals the potential of these specific SOD1 inhibitors in understanding and regulating ROS signaling. Furthermore, these specific SOD1 inhibitors also lead to selectively elevated cancer cell apoptosis, indicating that these kinds of SOD1 inhibitors might be candidates for lead compounds for cancer treatment.
Collapse
Affiliation(s)
- Xiongwei Dong
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Zhe Zhang
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Jidong Zhao
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Juan Lei
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Yuanyuan Chen
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Xiang Li
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Huanhuan Chen
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Junli Tian
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Dan Zhang
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Chunrong Liu
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| | - Changlin Liu
- Key Laboratory of Pesticide & Chemical Biology , Ministry of Education , School of Chemistry , Central China Normal University , Wuhan 430079 , Hubei , China . ;
| |
Collapse
|
359
|
Tu Y, Wang Z, Wang X, Yang H, Zhang P, Johnson M, Liu N, Liu H, Jin W, Zhang Y, Cui D. Birth of MTH1 as a therapeutic target for glioblastoma: MTH1 is indispensable for gliomatumorigenesis. Am J Transl Res 2016; 8:2803-2811. [PMID: 27398163 PMCID: PMC4931174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 03/24/2016] [Indexed: 06/06/2023]
Abstract
Malignant glioma is the most common primary tumor of the central nervous system. Chemotherapy and radiotherapy are the most common therapeutic approaches in glioma therapy. Both processes mainly kill cancer cells through generating high Reactive Oxygen Species (ROS) and lead to oxidative DNA damage. However, tumor resistance to ROS is always a challenge for cancer treatment. Human Mut T homolog 1 (MTH1, also known as NUDT1) is regarded as a protector of nucleotides against oxidization. Recent reports have verified that overexpression of MTH1 could remove oxidized dNTP pools. Here, we find that MTH1 is overexpressed both at mRNA and protein levels in GBM. MTH1 silencing inhibits colony formation; tumor spheres formation and xenograft tumor growth, and more importantly, the viability of glioma cells is significantly decreased in H2O2 after MTH1 was knocked down in glioma. PI staining show that H2O2 cause more glioma cell death after MTH1 silencing. So we speculate that overexpression of MTH1 is crucial for glioma survival, suppression of its expression can inhibit cancer cell survival in vitro and in vivo, MTH1 may be a potential target for human glioma therapy in future.
Collapse
Affiliation(s)
- Yanyang Tu
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical UniversityXi’an 710038, China
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, 02115, USA
| | - Zhen Wang
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical UniversityXi’an 710038, China
| | - Xin Wang
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, 02115, USA
| | - Hongwei Yang
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, 02115, USA
| | - Pengxing Zhang
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical UniversityXi’an 710038, China
| | - Mark Johnson
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical SchoolBoston, MA, 02115, USA
| | - Nan Liu
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical UniversityXi’an 710038, China
| | - Hui Liu
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical UniversityXi’an 710038, China
| | - Weilin Jin
- Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Engineering, Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electronic Engineering, Shanghai Jiao Tong UniversityShanghai 200240, China
| | - Yongsheng Zhang
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical UniversityXi’an 710038, China
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Engineering, Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electronic Engineering, Shanghai Jiao Tong UniversityShanghai 200240, China
| |
Collapse
|
360
|
Lee D, Kim IY, Saha S, Choi KS. Paraptosis in the anti-cancer arsenal of natural products. Pharmacol Ther 2016; 162:120-33. [DOI: 10.1016/j.pharmthera.2016.01.003] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
361
|
Victorino VJ, Barroso WA, Assunção AKM, Cury V, Jeremias IC, Petroni R, Chausse B, Ariga SK, Herrera ACSA, Panis C, Lima TM, Souza HP. PGC-1β regulates HER2-overexpressing breast cancer cells proliferation by metabolic and redox pathways. Tumour Biol 2016; 37:6035-44. [PMID: 26602383 DOI: 10.1007/s13277-015-4449-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/17/2015] [Indexed: 10/22/2022] Open
Abstract
Breast cancer is a prevalent neoplastic disease among women worldwide which treatments still present several side effects and resistance. Considering that cancer cells present derangements in their energetic homeostasis, and that peroxisome proliferator-activated receptor- gamma coactivator 1 (PGC-1) is crucial for cellular metabolism and redox signaling, the main objective of this study was to investigate whether there is a relationship between PGC-1 expression, the proliferation of breast cancer cells and the mechanisms involved. We initially assessed PGC-1β expression in complementary DNA (cDNA) from breast tumor of patients bearing luminal A, luminal B, and HER2-overexpressed and triple negative tumors. Our data showed that PGC-1β expression is increased in patients bearing HER2-overexpressing tumors as compared to others subtypes. Using quantitative PCR and immunoblotting, we showed that breast cancer cells with HER2-amplification (SKBR-3) have greater expression of PGC-1β as compared to a non-tumorous breast cell (MCF-10A) and higher proliferation rate. PGC-1β expression was knocked down with short interfering RNA in HER2-overexpressing cells, and cells decreased proliferation. In these PGC-1β-inhibited cells, we found increased citrate synthase activity and no marked changes in mitochondrial respiration. Glycolytic pathway was decreased, characterized by lower intracellular lactate levels. In addition, after PGC-1β knockdown, SKBR-3 cells showed increased reactive oxygen species production, no changes in antioxidant activity, and decreased expression of ERRα, a modulator of metabolism. In conclusion, we show an association of HER2-overexpression and PGC-1β. PGC-1β knockdown impairs HER2-overexpressing cells proliferation acting on ERRα signaling, metabolism, and redox balance.
Collapse
Affiliation(s)
- Vanessa Jacob Victorino
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil.
| | - W A Barroso
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - A K M Assunção
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - V Cury
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - I C Jeremias
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - R Petroni
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - B Chausse
- Instituto de Química, Universidade de São Paulo (IQ-USP), São Paulo, Brazil
| | - S K Ariga
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - A C S A Herrera
- Faculdade de Medicina, Pontifícia Universidade Católica, PUC, Campus Londrina, Paraná, Brazil
| | - C Panis
- Laboratório de Mediadores Inflamatórios, Universidade Estadual do Oeste do Paraná (UNIOESTE), Campus Francisco Beltrão, Paraná, Brazil
| | - T M Lima
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - H P Souza
- Laboratório de Investigação Médica - LIM 51, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil
| |
Collapse
|
362
|
Xiao F, Wang L, Duan H. Nanomaterial based electrochemical sensors for in vitro detection of small molecule metabolites. Biotechnol Adv 2016; 34:234-49. [DOI: 10.1016/j.biotechadv.2016.01.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 01/24/2016] [Accepted: 01/28/2016] [Indexed: 12/25/2022]
|
363
|
Dequanter D, VAN DE Velde M, Bar I, Nuyens V, Rousseau A, Nagy N, Vanhamme L, Vanhaeverbeek M, Brohée D, Delrée P, Boudjeltia K, Lothaire P, Uzureau P. Nuclear localization of glutamate-cysteine ligase is associated with proliferation in head and neck squamous cell carcinoma. Oncol Lett 2016; 11:3660-3668. [PMID: 27284370 PMCID: PMC4887909 DOI: 10.3892/ol.2016.4458] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 02/12/2016] [Indexed: 01/07/2023] Open
Abstract
Glutathione (GSH) is the keystone of the cellular response toward oxidative stress. Elevated GSH content correlates with increased resistance to chemotherapy and radiotherapy of head and neck (HN) tumors. The purpose of the present cross-sectional study was to evaluate whether the expression of glutamate-cysteine ligase (GCL) accounts for the increased GSH availability observed in HN squamous cell carcinoma (SCC). For that purpose, the messenger (m)RNA levels of the modifier (M) and catalytic (C) subunits of GCL and its putative regulators (namely, nuclear factor erythroid 2-related factor 2, heme oxygenase-1 and nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha) were monitored in 35 surgical resections of untreated HNSCC. The localization of GCLM was evaluated using in situ hybridization and immunohistochemistry. GCLM expression was significantly increased in tumor samples, compared with normal mucosa, both at the mRNA and protein level (P=0.029), but the pathway of GCLM activation remains to be elucidated. Protein expression of GCLM was detected in the cytoplasm and nucleus. GCLM and the proliferation marker Ki-67 displayed a similar distribution, being both mainly expressed at the periphery of tumor lobules. The present study reported increased expression of GCL and the rate-limiting enzyme of GSH synthesis, within HNSCC. The nuclear localization of GCLM and the concomitant expression of Ki-67 suggested that the localization of GSH synthesis contributes to the protection against oxidative stress within hotspots of cell proliferation.
Collapse
Affiliation(s)
- Didier Dequanter
- Department of Surgery, University Hospital Center of Charleroi, André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Maureen VAN DE Velde
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, Liège B-4000, Belgium
| | - Isabelle Bar
- Department of Pathology, Institute of Pathology and Genetics, Gosselies B-6041, Belgium
| | - Vincent Nuyens
- Laboratory of Experimental Medicine (ULB222), André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Alexandre Rousseau
- Laboratory of Experimental Medicine (ULB222), André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Nathalie Nagy
- Department of Pathological Anatomy, University Hospital Center in Charleroi, André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Luc Vanhamme
- Laboratory of Molecular Parasitology, Institute of Molecular Biology and Medicine, Université Libre de Bruxelles, Charleroi B-6041, Belgium
| | - Michel Vanhaeverbeek
- Department of Internal Medicine, University Hospital Center in Charleroi, André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Dany Brohée
- Department of Oncology, University Hospital Center in Charleroi, André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Paul Delrée
- Department of Pathology, Institute of Pathology and Genetics, Gosselies B-6041, Belgium
| | - Karim Boudjeltia
- Laboratory of Experimental Medicine (ULB222), André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Philippe Lothaire
- Department of Surgery, University Hospital Center of Charleroi, André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| | - Pierrick Uzureau
- Laboratory of Experimental Medicine (ULB222), André Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul B-6110, Belgium
| |
Collapse
|
364
|
Nanegrungsunk D, Apaijai N, Yarana C, Sripetchwandee J, Limpastan K, Watcharasaksilp W, Vaniyapong T, Chattipakorn N, Chattipakorn SC. Bevacizumab is superior to Temozolomide in causing mitochondrial dysfunction in human brain tumors. Neurol Res 2016; 38:285-93. [PMID: 27078710 DOI: 10.1080/01616412.2015.1114233] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVE Current chemotherapy treatments available for treating high-grade brain tumors, Temozolomide (TMZ) or Bevacizumab (BEV), not only have specific anti-tumor mechanisms, but also have an effect on mitochondria. However, effects of both drugs on mitochondria isolated from human brain tumors have not been thoroughly investigated. This study determined the direct effects of TMZ and BEV as well as the neurotoxic condition (calcium overload), on the function of mitochondria and compared these effects on mitochondria isolated from low- and high-grade human brain tumors. METHODS Mitochondria were isolated from either low- or high-grade human primary brain tumors. Calcium overload conditions (100 or 200 μM), TMZ (300 μM), and BEV (2 mg/mL) were applied to isolated mitochondria from low- and high-grade brain tumors. Following the treatment, mitochondrial function, including reactive oxygen species production, membrane potential changes, and swelling, were determined. The mitochondrial morphology was also examined. RESULTS In calcium overload conditions, mitochondrial dysfunction was only found to have occurred in low-grade tumors. In TMZ and BEV treatment, BEV, rather than TMZ, caused greater membrane depolarization and mitochondrial swelling in both grades of brain tumors. CONCLUSIONS TMZ and BEV can directly cause the dysfunction of mitochondria isolated from human brain tumors. However, BEV has a greater ability to disturb mitochondrial function in mitochondria isolated from human brain tumors than either TMZ or calcium overload conditions.
Collapse
Affiliation(s)
- Danop Nanegrungsunk
- a Department of Anesthesiology, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand.,b Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Nattayaporn Apaijai
- b Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Chontida Yarana
- b Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Jirapas Sripetchwandee
- b Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Kriengsak Limpastan
- c Neurosurgery Division, Department of Surgery, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Wanarak Watcharasaksilp
- c Neurosurgery Division, Department of Surgery, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Tanat Vaniyapong
- c Neurosurgery Division, Department of Surgery, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Nipon Chattipakorn
- b Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand
| | - Siriporn C Chattipakorn
- b Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine , Chiang Mai University , Chiang Mai , Thailand.,d Department of Oral Biology and Diagnostic Science, Faculty of Dentistry , Chiang Mai University , Chiang Mai , Thailand
| |
Collapse
|
365
|
Niedzwiecka K, Kabala AM, Lasserre JP, Tribouillard-Tanvier D, Golik P, Dautant A, di Rago JP, Kucharczyk R. Yeast models of mutations in the mitochondrial ATP6 gene found in human cancer cells. Mitochondrion 2016; 29:7-17. [PMID: 27083309 DOI: 10.1016/j.mito.2016.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 04/08/2016] [Accepted: 04/08/2016] [Indexed: 01/09/2023]
Abstract
Since the discovery of somatic mtDNA mutations in tumor cells, multiple studies have focused on establishing a causal relationship between those changes and alterations in energy metabolism, a hallmark of cancer cells. Yet the consequences of these mutations on mitochondrial function remain largely unknown. In this study, Saccharomyces cerevisiae has been used as a model to investigate the functional consequences of four cancer-associated missense mutations (8914C>A, 8932C>T, 8953A>G, 9131T>C) found in the mitochondrial MT-ATP6 gene. This gene encodes the a-subunit of F1FO-ATP synthase, which catalyzes the last steps of ATP production in mitochondria. Although the four studied mutations affected well-conserved residues of the a-subunit, only one of them (8932C>T) had a significant impact on mitochondrial function, due to a less efficient incorporation of the a-subunit into ATP synthase. Our findings indicate that these ATP6 genetic variants found in human tumors are neutral mitochondrial genome substitutions with a limited, if any, impact on the energetic function of mitochondria.
Collapse
Affiliation(s)
- Katarzyna Niedzwiecka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Anna Magdalena Kabala
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland; Institut de Biochimie et Génétique Cellulaires, CNRS UMR5095, Université de Bordeaux, 1 rue Camille Saint-Saëns, 33077 Bordeaux Cedex, France
| | - Jean-Paul Lasserre
- Institut de Biochimie et Génétique Cellulaires, CNRS UMR5095, Université de Bordeaux, 1 rue Camille Saint-Saëns, 33077 Bordeaux Cedex, France
| | - Déborah Tribouillard-Tanvier
- Institut de Biochimie et Génétique Cellulaires, CNRS UMR5095, Université de Bordeaux, 1 rue Camille Saint-Saëns, 33077 Bordeaux Cedex, France
| | - Pawel Golik
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland; Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Poland
| | - Alain Dautant
- Institut de Biochimie et Génétique Cellulaires, CNRS UMR5095, Université de Bordeaux, 1 rue Camille Saint-Saëns, 33077 Bordeaux Cedex, France
| | - Jean-Paul di Rago
- Institut de Biochimie et Génétique Cellulaires, CNRS UMR5095, Université de Bordeaux, 1 rue Camille Saint-Saëns, 33077 Bordeaux Cedex, France
| | - Roza Kucharczyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland.
| |
Collapse
|
366
|
Kelishomi ZH, Goliaei B, Mahdavi H, Nikoofar A, Rahimi M, Moosavi-Movahedi AA, Mamashli F, Bigdeli B. Antioxidant activity of low molecular weight alginate produced by thermal treatment. Food Chem 2016; 196:897-902. [DOI: 10.1016/j.foodchem.2015.09.091] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 09/21/2015] [Accepted: 09/28/2015] [Indexed: 10/23/2022]
|
367
|
Pristimerin inhibits proliferation, migration and invasion, and induces apoptosis in HCT-116 colorectal cancer cells. Biomed Pharmacother 2016; 79:112-9. [DOI: 10.1016/j.biopha.2016.02.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 02/04/2016] [Accepted: 02/06/2016] [Indexed: 11/20/2022] Open
|
368
|
Prasad S, Gupta SC, Tyagi AK. Reactive oxygen species (ROS) and cancer: Role of antioxidative nutraceuticals. Cancer Lett 2016; 387:95-105. [PMID: 27037062 DOI: 10.1016/j.canlet.2016.03.042] [Citation(s) in RCA: 566] [Impact Index Per Article: 70.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 12/21/2022]
Abstract
Extensive research over the past half a century indicates that reactive oxygen species (ROS) play an important role in cancer. Although low levels of ROS can be beneficial, excessive accumulation can promote cancer. One characteristic of cancer cells that distinguishes them from normal cells is their ability to produce increased numbers of ROS and their increased dependence on an antioxidant defense system. ROS are produced as a byproduct intracellularly by mitochondria and other cellular elements and exogenously by pollutants, tobacco, smoke, drugs, xenobiotics, and radiation. ROS modulate various cell signaling pathways, which are primarily mediated through the transcription factors NF-κB and STAT3, hypoxia-inducible factor-1α, kinases, growth factors, cytokines and other proteins, and enzymes; these pathways have been linked to cellular transformation, inflammation, tumor survival, proliferation, invasion, angiogenesis, and metastasis of cancer. ROS are also associated with epigenetic changes in genes, which is helpful in diagnosing diseases. This review considers the role of ROS in the various stages of cancer development. Finally, we provide evidence that nutraceuticals derived from Mother Nature are highly effective in eliminating cancer cells.
Collapse
Affiliation(s)
- Sahdeo Prasad
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA.
| | - Subash C Gupta
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Amit K Tyagi
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| |
Collapse
|
369
|
Fermented papaya preparation modulates the progression of N-methyl-N-nitrosourea induced hepatocellular carcinoma in Balb/c mice. Life Sci 2016; 151:330-338. [PMID: 26979773 DOI: 10.1016/j.lfs.2016.03.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/08/2016] [Accepted: 03/11/2016] [Indexed: 11/21/2022]
Abstract
AIM AND MAIN METHOD The medicinal properties of fermented papaya preparation (FPP) derived from Carica papaya fruit was investigated in order to determine its ability to modulate the progression of N-methyl-N-nitrosourea induced hepatocellular carcinoma in Balb/c mice. KEY FINDINGS As well as reducing the physical symptoms associated with N-methyl-N-nitrosourea (MNU)-induced hepatocellular carcinoma, supplementation of Balb/c mice with 500mg FPP/kg BW for 92days normalized the blood cell count, led to an increased activity of several key antioxidant enzymes (SOD: +20%, CAT: +81%, GPx: +66.1%, GR: +54.4%; P<0.001 vs. MNU control), increased the ferrous reducing antioxidant potential (+36.7%, P<0.001 vs. MNU control) and reduced the extent of lipid peroxidation in the liver by 44.3% (P<0.001 vs. MNU control). SIGNIFICANCE Results demonstrated the ability of FPP to preserve the integrity of liver against oxidative damage and protect hepatocytes against irreversible DNA structural modifications induced by MNU, highlighting its potential role as an immune-defense modulator during hepatocarcinoma.
Collapse
|
370
|
Valdés A, García-Cañas V, Koçak E, Simó C, Cifuentes A. Foodomics study on the effects of extracellular production of hydrogen peroxide by rosemary polyphenols on the anti-proliferative activity of rosemary polyphenols against HT-29 cells. Electrophoresis 2016; 37:1795-804. [DOI: 10.1002/elps.201600014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 01/21/2016] [Accepted: 01/27/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Alberto Valdés
- Laboratory of Foodomics; Institute of Food Science Research (CIAL, CSIC); Madrid Spain
| | - Virginia García-Cañas
- Laboratory of Foodomics; Institute of Food Science Research (CIAL, CSIC); Madrid Spain
| | - Engin Koçak
- Laboratory of Foodomics; Institute of Food Science Research (CIAL, CSIC); Madrid Spain
| | - Carolina Simó
- Laboratory of Foodomics; Institute of Food Science Research (CIAL, CSIC); Madrid Spain
| | - Alejandro Cifuentes
- Laboratory of Foodomics; Institute of Food Science Research (CIAL, CSIC); Madrid Spain
| |
Collapse
|
371
|
Ali S, Mondal N, Choudhry H, Rasool M, Pushparaj PN, Khan MA, Mahfooz M, Sami GA, Jarullah J, Ali A, Jamal MS. Current Management Strategies in Breast Cancer by Targeting Key Altered Molecular Players. Front Oncol 2016; 6:45. [PMID: 26973813 PMCID: PMC4771739 DOI: 10.3389/fonc.2016.00045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 02/12/2016] [Indexed: 01/08/2023] Open
Abstract
Breast cancer is the second largest disease affecting women worldwide. It remains the most frequently reported and leading cause of death among women in both developed and developing countries. Tamoxifen and raloxifene are commonly used selective estrogen receptor modulators for treatment of breast cancer in women with high risk, although resistance occurs by tamoxifen after 5 years of therapy and both drugs cause uterine cancer and thromboembolic events. Aromatase inhibitors (AIs) are one of the optional modes used for breast cancer treatment. The combination of AIs along with tamoxifen can also be beneficial. Various therapeutic agents from different sources are being studied, which further need to be improved for potential outcome. For this, clinical trials based on large number of patients with optimal dose and lesser side effects have to be more in practice. Despite the clinical trials going on, there is need of better molecular models, which can identify high risk population, new agents with better benefit having less side effects, and improved biomarkers for treating breast cancer.
Collapse
Affiliation(s)
- Shazia Ali
- School of Life Science, Jawaharlal Nehru University , New Delhi , India
| | - Neelima Mondal
- School of Life Science, Jawaharlal Nehru University , New Delhi , India
| | - Hani Choudhry
- Department of Biochemistry, Faculty of Science, Center of Innovation in Personalized Medicine, King Fahd Center for Medical Research, King Abdulaziz University , Jeddah , Saudi Arabia
| | - Mahmood Rasool
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University , Jeddah , Saudi Arabia
| | - Peter N Pushparaj
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University , Jeddah , Saudi Arabia
| | | | - Maryam Mahfooz
- Department of Computer Science, Jamia Millia Islamia , New Delhi , India
| | - Ghufrana A Sami
- Department of Biotechnology, Jamia Millia Islamia , New Delhi , India
| | - Jummanah Jarullah
- King Fahd Medical Research Center, King Abdulaziz University , Jeddah , Saudi Arabia
| | - Ashraf Ali
- King Fahd Medical Research Center, King Abdulaziz University , Jeddah , Saudi Arabia
| | - Mohammad S Jamal
- King Fahd Medical Research Center, King Abdulaziz University , Jeddah , Saudi Arabia
| |
Collapse
|
372
|
The inhibition of Typhonium flagelliforme Lodd. Blume leaf extract on COX-2 expression of WiDr colon cancer cells. Asian Pac J Trop Biomed 2016. [DOI: 10.1016/j.apjtb.2015.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
373
|
Seillier M, Pouyet L, N'Guessan P, Nollet M, Capo F, Guillaumond F, Peyta L, Dumas JF, Varrault A, Bertrand G, Bonnafous S, Tran A, Meur G, Marchetti P, Ravier MA, Dalle S, Gual P, Muller D, Rutter GA, Servais S, Iovanna JL, Carrier A. Defects in mitophagy promote redox-driven metabolic syndrome in the absence of TP53INP1. EMBO Mol Med 2016; 7:802-18. [PMID: 25828351 PMCID: PMC4459819 DOI: 10.15252/emmm.201404318] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The metabolic syndrome covers metabolic abnormalities including obesity and type 2 diabetes (T2D). T2D is characterized by insulin resistance resulting from both environmental and genetic factors. A genome-wide association study (GWAS) published in 2010 identified TP53INP1 as a new T2D susceptibility locus, but a pathological mechanism was not identified. In this work, we show that mice lacking TP53INP1 are prone to redox-driven obesity and insulin resistance. Furthermore, we demonstrate that the reactive oxygen species increase in TP53INP1-deficient cells results from accumulation of defective mitochondria associated with impaired PINK/PARKIN mitophagy. This chronic oxidative stress also favors accumulation of lipid droplets. Taken together, our data provide evidence that the GWAS-identified TP53INP1 gene prevents metabolic syndrome, through a mechanism involving prevention of oxidative stress by mitochondrial homeostasis regulation. In conclusion, this study highlights TP53INP1 as a molecular regulator of redox-driven metabolic syndrome and provides a new preclinical mouse model for metabolic syndrome clinical research.
Collapse
Affiliation(s)
- Marion Seillier
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Laurent Pouyet
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Prudence N'Guessan
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Marie Nollet
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Florence Capo
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Fabienne Guillaumond
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Laure Peyta
- Inserm, U1069 Nutrition, Croissance et Cancer (N2C), Tours, France
| | | | - Annie Varrault
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Gyslaine Bertrand
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Stéphanie Bonnafous
- Inserm, U1065, C3M Team 8 "Hepatic Complications in Obesity", Nice, France Université de Nice-Sophia-Antipolis, Nice, France Centre Hospitalier Universitaire de Nice, Pôle Digestif Hôpital L'Archet, Nice, France
| | - Albert Tran
- Inserm, U1065, C3M Team 8 "Hepatic Complications in Obesity", Nice, France Université de Nice-Sophia-Antipolis, Nice, France Centre Hospitalier Universitaire de Nice, Pôle Digestif Hôpital L'Archet, Nice, France
| | - Gargi Meur
- Cell Biology, Department of Medicine, Imperial College, London, UK
| | - Piero Marchetti
- Islet Cell Laboratory, University of Pisa - Cisanello Hospital, Pisa, Italy
| | - Magalie A Ravier
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Stéphane Dalle
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Philippe Gual
- Inserm, U1065, C3M Team 8 "Hepatic Complications in Obesity", Nice, France Université de Nice-Sophia-Antipolis, Nice, France Centre Hospitalier Universitaire de Nice, Pôle Digestif Hôpital L'Archet, Nice, France
| | - Dany Muller
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Guy A Rutter
- Cell Biology, Department of Medicine, Imperial College, London, UK
| | - Stéphane Servais
- Inserm, U1069 Nutrition, Croissance et Cancer (N2C), Tours, France
| | - Juan L Iovanna
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Alice Carrier
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| |
Collapse
|
374
|
Cho YH, Lee JW, Woo HD, Lee S, Kim YJ, Lee Y, Shin S, Joung H, Chung HW. Protective Effect of Onion Extract on Bleomycin-Induced Cytotoxicity and Genotoxicity in Human Lymphocytes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:227. [PMID: 26907305 PMCID: PMC4772247 DOI: 10.3390/ijerph13020227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 01/29/2016] [Accepted: 02/06/2016] [Indexed: 01/19/2023]
Abstract
Following one of the world's largest nuclear accidents, occured at Fukushima, Japan in 2011, a significant scientific effort has focused on minimizing the potential adverse health effects due to radiation exposure. The use of natural dietary antioxidants to reduce the risk of radiation-induced oxidative DNA damage is a simple strategy for minimizing radiation-related cancer rates and improving overall health. The onion is among the richest sources of dietary flavonoids and is an important food for increasing their overall intake. Therefore, we examined the effect of an onion extract on cyto- and geno-toxicity in human lymphocytes treated with bleomycin (BLM), a radiomimetic agent. In addition, we measured the frequency of micronuclei (MN) and DNA damage following treatment with BLM using a cytokinesis-blocked micronucleus assay and a single cell gel electrophoresis assay. We observed a significant increase in cell viability in lymphocytes treated with onion extract then exposed to BLM compared to cells treated with BLM alone. The frequency of BLM induced MN and DNA damage increased in a dose-dependent manner; however, when lymphocytes were pretreated with onion extract (10 and 20 μL/mL), the frequency of BLM-induced MN was decreased at all doses of BLM and DNA damage was decreased at 3 μg/mL of BLM. These results suggest that onion extract may have protective effects against BLM-induced cyto- and genotoxicity in human lymphocytes.
Collapse
Affiliation(s)
- Yoon Hee Cho
- School of Public Health, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
- Department of Biomedical and Pharmaceutical Sciences, College of Health Professions and Biomedical Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Joong Won Lee
- School of Public Health, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
| | - Hae Dong Woo
- Molecular Epidemiology Branch, Division of Cancer Epidemiology and Prevention, Research Institute, National Cancer Center, Ilsandong-gu, Gyeonggi-do 410-769, Korea.
| | - Sunyeong Lee
- School of Public Health, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
| | - Yang Jee Kim
- Da Vinci College of General Education, Chung-Ang University, Dongjak-Gu, Seoul 156-756, Korea.
| | - Younghyun Lee
- School of Public Health, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
| | - Sangah Shin
- Institute of Health and Environment, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
| | - Hyojee Joung
- School of Public Health, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
| | - Hai Won Chung
- School of Public Health, Seoul National University, Gwanak-gu, Seoul 151-742, Korea.
| |
Collapse
|
375
|
Bogoeva V, Siksjø M, Sæterbø KG, Melø TB, Bjørkøy A, Lindgren M, Gederaas OA. Ruthenium porphyrin-induced photodamage in bladder cancer cells. Photodiagnosis Photodyn Ther 2016; 14:9-17. [PMID: 26845686 DOI: 10.1016/j.pdpdt.2016.01.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 01/27/2016] [Accepted: 01/29/2016] [Indexed: 12/18/2022]
Abstract
Photodynamic therapy (PDT) is a noninvasive treatment for solid malignant and flat tumors. Light activated sensitizers catalyze photochemical reactions that produce reactive oxygen species which can cause cancer cell death. In this work we investigated the photophysical properties of the photosensitizer ruthenium(II) porphyrin (RuP), along with its PDT efficiency onto rat bladder cancer cells (AY27). Optical spectroscopy verified that RuP is capable to activate singlet oxygen via blue and red absorption bands and inter system crossing (ISC) to the triplet state. In vitro experiments on AY27 indicated increased photo-toxicity of RuP (20μM, 18h incubation) after cell illumination (at 435nm), as a function of blue light exposure. Cell survival fraction was significantly reduced to 14% after illumination of 20μM RuP with 15.6J/cm(2), whereas the "dark toxicity" of 20μM RuP was 17%. Structural and morphological changes of cells were observed, due to RuP accumulation, as well as light-dependent cell death was recorded by confocal microscopy. Flow cytometry verified that PDT-RuP (50μM) triggered significant photo-induced cellular destruction with a photoxicity of (93%±0.9%). Interestingly, the present investigation of RuP-PDT showed that the dominating mode of cell death is necrosis. RuP "dark toxicity" compared to the conventional chemotherapeutic drug cisplatin was higher, both evaluated by the MTT assay (24h). In conclusion, the present investigation shows that RuP with or without photoactivation induces cell death of bladder cancer cells.
Collapse
Affiliation(s)
- Vanya Bogoeva
- Department Molecular Biology of Cell Cycle, Institute of Molecular Biology, Bulgarian Academy of Sciences, Acad. "G. Bonchev" Str., Bl. 21, Sofia 1113, Bulgaria.
| | - Monica Siksjø
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Kristin G Sæterbø
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Thor Bernt Melø
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Astrid Bjørkøy
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Mikael Lindgren
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway; Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden
| | - Odrun A Gederaas
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| |
Collapse
|
376
|
Zakraoui O, Marcinkiewicz C, Aloui Z, Othman H, Grépin R, Haoues M, Essafi M, Srairi-Abid N, Gasmi A, Karoui H, Pagès G, Essafi-Benkhadir K. Lebein, a snake venom disintegrin, suppresses human colon cancer cells proliferation and tumor-induced angiogenesis through cell cycle arrest, apoptosis induction and inhibition of VEGF expression. Mol Carcinog 2016; 56:18-35. [PMID: 26824338 DOI: 10.1002/mc.22470] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 01/08/2016] [Accepted: 01/15/2016] [Indexed: 12/15/2022]
Abstract
Lebein, is an heterodimeric disintegrin isolated from Macrovipera lebetina snake venom that was previously characterized as an inhibitor of ADP-induced platelet aggregation. In this study, we investigated the effect of Lebein on the p53-dependent growth of human colon adenocarcinoma cell lines. We found that Lebein significantly inhibited LS174 (p53wt), HCT116 (p53wt), and HT29 (p53mut) colon cancer cell viability by inducing cell cycle arrest through the modulation of expression levels of the tumor suppression factor p53, cell cycle regulating proteins cyclin D1, CDK2, CDK4, retinoblastoma (Rb), CDK1, and cyclin-dependent kinase inhibitors p21 and p27. Interestingly, Lebein-induced apoptosis of colon cancer cells was dependent on their p53 status. Thus, in LS174 cells, cell death was associated with PARP cleavage and the activation of caspases 3 and 8 while in HCT116 cells, Lebein induced caspase-independent apoptosis through increased expression of apoptosis inducing factor (AIF). In LS174 cells, Lebein triggers the activation of the MAPK ERK1/2 pathway through induction of reactive oxygen species (ROS). It also decreased cell adhesion and migration to fibronectin through down regulation of α5β1 integrin. Moreover, Lebein significantly reduced the expression of two angiogenesis stimulators, Vascular Endothelial Growth Factor (VEGF) and Neuropilin 1 (NRP1). It inhibited the VEGF-induced neovascularization process in the quail embryonic CAM system and blocked the development of human colon adenocarcinoma in nude mice. Overall, our work indicates that Lebein may be useful to design a new therapy against colon cancer. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Ons Zakraoui
- Institut Pasteur de Tunis, LR11IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, Tunis, Tunisia.,Université de Tunis El Manar, Tunis, Tunisia
| | - Cezary Marcinkiewicz
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
| | - Zohra Aloui
- Institut Pasteur de Tunis, LR11IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, Tunis, Tunisia.,Université de Tunis El Manar, Tunis, Tunisia
| | - Houcemeddine Othman
- Université de Tunis El Manar, Tunis, Tunisia.,Institut Pasteur de Tunis, LR11IPT08 Laboratoire des Venins et Biomolécules thérapeutiques, Tunis, Tunisia
| | - Renaud Grépin
- Department of Biomedical, Centre Scientifique de Monaco, 8 Quai Antoine Ier, Monaco, Principality of Monaco
| | - Meriam Haoues
- Université de Tunis El Manar, Tunis, Tunisia.,Institut Pasteur de Tunis, LR11IPT02 Laboratoire de Recherche sur la Transmission, le Contrôle et l'Immunobiologie des Infections, Tunis, Tunisia
| | - Makram Essafi
- Université de Tunis El Manar, Tunis, Tunisia.,Institut Pasteur de Tunis, LR11IPT02 Laboratoire de Recherche sur la Transmission, le Contrôle et l'Immunobiologie des Infections, Tunis, Tunisia
| | - Najet Srairi-Abid
- Université de Tunis El Manar, Tunis, Tunisia.,Institut Pasteur de Tunis, LR11IPT08 Laboratoire des Venins et Biomolécules thérapeutiques, Tunis, Tunisia
| | | | - Habib Karoui
- Institut Pasteur de Tunis, LR11IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, Tunis, Tunisia.,Université de Tunis El Manar, Tunis, Tunisia
| | - Gilles Pagès
- Institute for Research on Cancer and Aging of Nice (IRCAN) UMR/7284 U1081, University of Nice Sophia Antipolis, Nice, France
| | - Khadija Essafi-Benkhadir
- Institut Pasteur de Tunis, LR11IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, Tunis, Tunisia.,Université de Tunis El Manar, Tunis, Tunisia
| |
Collapse
|
377
|
A holistic view of cancer bioenergetics: mitochondrial function and respiration play fundamental roles in the development and progression of diverse tumors. Clin Transl Med 2016; 5:3. [PMID: 26812134 PMCID: PMC4728164 DOI: 10.1186/s40169-016-0082-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 01/11/2016] [Indexed: 02/01/2023] Open
Abstract
Since Otto Warburg made the first observation that tumor cells exhibit altered metabolism and bioenergetics in the 1920s, many scientists have tried to further the understanding of tumor bioenergetics. Particularly, in the past decade, the application of the state-of the-art metabolomics and genomics technologies has revealed the remarkable plasticity of tumor metabolism and bioenergetics. Firstly, a wide array of tumor cells have been shown to be able to use not only glucose, but also glutamine for generating cellular energy, reducing power, and metabolic building blocks for biosynthesis. Secondly, many types of cancer cells generate most of their cellular energy via mitochondrial respiration and oxidative phosphorylation. Glutamine is the preferred substrate for oxidative phosphorylation in tumor cells. Thirdly, tumor cells exhibit remarkable versatility in using bioenergetics substrates. Notably, tumor cells can use metabolic substrates donated by stromal cells for cellular energy generation via oxidative phosphorylation. Further, it has been shown that mitochondrial transfer is a critical mechanism for tumor cells with defective mitochondria to restore oxidative phosphorylation. The restoration is necessary for tumor cells to gain tumorigenic and metastatic potential. It is also worth noting that heme is essential for the biogenesis and proper functioning of mitochondrial respiratory chain complexes. Hence, it is not surprising that recent experimental data showed that heme flux and function are elevated in non-small cell lung cancer (NSCLC) cells and that elevated heme function promotes intensified oxygen consumption, thereby fueling tumor cell proliferation and function. Finally, emerging evidence increasingly suggests that clonal evolution and tumor genetic heterogeneity contribute to bioenergetic versatility of tumor cells, as well as tumor recurrence and drug resistance. Although mutations are found only in several metabolic enzymes in tumors, diverse mutations in signaling pathways and networks can cause changes in the expression and activity of metabolic enzymes, which likely enable tumor cells to gain their bioenergetic versatility. A better understanding of tumor bioenergetics should provide a more holistic approach to investigate cancer biology and therapeutics. This review therefore attempts to comprehensively consider and summarize the experimental data supporting our latest view of cancer bioenergetics.
Collapse
|
378
|
Chen F, Deng ZY, Zhang B, Xiong ZX, Zheng SL, Tan CL, Hu JN. Esterification of Ginsenoside Rh2 Enhanced Its Cellular Uptake and Antitumor Activity in Human HepG2 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:253-261. [PMID: 26672619 DOI: 10.1021/acs.jafc.5b05450] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Our previous research had indicated that the octyl ester derivative of ginsenoside Rh2 (Rh2-O) might have a higher bioavailability than Rh2 in the Caco-2 cell line. The aim of this study was to investigate the cellular uptake and antitumor effects of Rh2-O in human HepG2 cells as well as its underlying mechanism compared with Rh2. Results showed that Rh2-O exhibited a higher cellular uptake (63.24%) than Rh2 (36.76%) when incubated with HepG2 cells for 24 h. Rh2-O possessed a dose- and time-dependent inhibitory effect against the proliferation of HepG2 cells. The IC50 value of Rh2-O for inhibition of HepG2 cell proliferation was 20.15 μM, which was roughly half the value of Rh2. Rh2-O induced apoptosis of HepG2 cells through a mitochondrial-mediated intrinsic pathway. In addition, the accumulation of ROS was detected in Rh2-O-treated HepG2 cells, which participated in the apoptosis of HepG2 cells. Conclusively, the findings above all suggested that Rh2-O as well as Rh2 inducing HepG2 cells apoptosis might involve similar mechanisms; however, Rh2-O had better antitumor activities than Rh2, probably due to its higher cellular uptake.
Collapse
Affiliation(s)
- Fang Chen
- State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University , Nanchang, Jiangxi 330047, China
| | - Ze-Yuan Deng
- State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University , Nanchang, Jiangxi 330047, China
- College of Food Science, Nanchang University , Nanchang, Jiangxi 330047, China
| | - Bing Zhang
- State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University , Nanchang, Jiangxi 330047, China
| | - Zeng-Xing Xiong
- College of Food Science, Nanchang University , Nanchang, Jiangxi 330047, China
| | - Shi-Lian Zheng
- College of Food Science, Nanchang University , Nanchang, Jiangxi 330047, China
| | - Chao-Li Tan
- College of Food Science, Nanchang University , Nanchang, Jiangxi 330047, China
| | - Jiang-Ning Hu
- State Key Laboratory of Food Science and Technology, Institute for Advanced Study, Nanchang University , Nanchang, Jiangxi 330047, China
- College of Food Science, Nanchang University , Nanchang, Jiangxi 330047, China
| |
Collapse
|
379
|
Zhang M, Song CC, Ji R, Qiao ZY, Yang C, Qiu FY, Liang DH, Du FS, Li ZC. Oxidation and temperature dual responsive polymers based on phenylboronic acid and N-isopropylacrylamide motifs. Polym Chem 2016. [DOI: 10.1039/c5py01999k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Oxidation and temperature dual responsive copolymers using ROS as a target for drug delivery have been demonstrated.
Collapse
Affiliation(s)
- Mei Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Cheng-Cheng Song
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Ran Ji
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Zeng-Ying Qiao
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Chao Yang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Fang-Yi Qiu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - De-Hai Liang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| |
Collapse
|
380
|
Matias A, Biazolla G, Cerchiaro G, Keppler A. α-Aryl-N-aryl nitrones: Synthesis and screening of a new scaffold for cellular protection against an oxidative toxic stimulus. Bioorg Med Chem 2016; 24:232-9. [DOI: 10.1016/j.bmc.2015.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 11/27/2015] [Accepted: 12/05/2015] [Indexed: 01/10/2023]
|
381
|
Yu M, Xie D, Phan KP, Enriquez JS, Luci JJ, Que EL. A CoII complex for 19F MRI-based detection of reactive oxygen species. Chem Commun (Camb) 2016; 52:13885-13888. [DOI: 10.1039/c6cc08207f] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A fluorinated, cobalt(ii)-based 19F MRI imaging agent switches from a paramagnetic high spin CoII state to a diamagnetic low spin CoIII state following oxidation by H2O2 and other reactive oxygen species, resulting in a turn-on response via both 19F NMR and MRI.
Collapse
Affiliation(s)
- Meng Yu
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Da Xie
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Khanh P. Phan
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - José S. Enriquez
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Jeffrey J. Luci
- Department of Neuroscience
- The University of Texas at Austin
- Austin
- USA
- Imaging Research Center
| | - Emily L. Que
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| |
Collapse
|
382
|
Li Y, Ye T, Yang F, Hu M, Liang L, He H, Li Z, Zeng A, Li Y, Yao Y, Xie Y, An Z, Li S. Punica granatum (pomegranate) peel extract exerts potent antitumor and anti-metastasis activity in thyroid cancer. RSC Adv 2016. [DOI: 10.1039/c6ra13167k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The incidence of thyroid carcinoma has obviously been rising throughout the world during the past ten years.
Collapse
|
383
|
Malignant transformation of human gastric epithelium cells via reactive oxygen species production and Wnt/β-catenin pathway activation following 40-week exposure to ochratoxin A. Cancer Lett 2015; 372:36-47. [PMID: 26721203 DOI: 10.1016/j.canlet.2015.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/04/2015] [Accepted: 12/04/2015] [Indexed: 12/15/2022]
Abstract
Ochratoxin A (OTA), one of the most abundant food-contaminating mycotoxins, is a possible carcinogenic to humans. We previously demonstrated that OTA treatment induced oxidative damage in human gastric epithelium cells (GES-1) in vitro. In this study, we found that long-term OTA treatment could result in increased proliferation, migration, and invasion abilities of GES-1 cells and induce anchorage-independent growth of cells in soft agar. Inoculation of OTA-treated GES-1 cells resulted in the formation of tumor xenografts in Balb/c nude mice in vivo, confirming that long-term OTA treatment can induce the malignant transformation of GES-1 cells. In addition, we found that long-term OTA treatment induced oxidative stress and activated the Wnt/β-catenin pathway, including the nuclear transition of β-catenin and the upregulation of the downstream molecules of the pathway. Finally, pretreatment with the antioxidant N-acetyl-L-cysteine (NAC) inhibited ROS formation and activation of the Wnt pathway in OTA-transformed GES-1 cells, which decreased the tumor formation abilities of these cells after inoculation in nude mice. These findings suggest that long-term OTA exposure induces the malignant transformation of GES-1 cells via intracellular ROS production and activation of the Wnt/β-catenin signaling pathway.
Collapse
|
384
|
Rai N, Sarkar M, Raha S. Piroxicam, a traditional non-steroidal anti-inflammatory drug (NSAID) causes apoptosis by ROS mediated Akt activation. Pharmacol Rep 2015; 67:1215-23. [DOI: 10.1016/j.pharep.2015.05.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/31/2015] [Accepted: 05/14/2015] [Indexed: 01/10/2023]
|
385
|
Lagerstedt M, Huotari-Orava R, Nyberg R, Mäenpää JU, Snellman E, Laasanen SL. Reduction in ERRα is associated with lichen sclerosus and vulvar squamous cell carcinoma. Gynecol Oncol 2015; 139:536-40. [PMID: 26499936 DOI: 10.1016/j.ygyno.2015.10.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 10/16/2015] [Accepted: 10/18/2015] [Indexed: 02/07/2023]
Abstract
OBJECTIVE ERRs (estrogen-related receptors) regulate energy metabolism, the cell cycle and inflammatory processes in both normal and cancer cells. Chronic inflammation induced by lichen sclerosus (LS) or human papilloma virus (HPV) precedes vulvar squamous cell carcinoma (vulvar SCC). We investigated the expression of ERRα, ERRβ and ERRγ in normal vulvar skin, LS as well as LS-dependent and LS-independent/HPV-related vulvar SCC. METHODS A total of 203 samples were analyzed for ERRα, ERRβ and ERRγ by using immunohistochemistry. These included 37 normal vulvar skin samples, 110 LS samples, 6 vulvar intraepithelial neoplasia (VIN) samples and 50 vulvar SCC samples. RESULTS A substantial reduction in or disappearance of ERRα was detected in all vulvar SCC samples. A total of 79% of childhood-onset LS and 51% of adulthood-onset LS lesions showed decreases in ERRα staining. A gradual reduction in ERRα cytoplasmic staining was observed from healthy vulvar skin to precursor lesions and further to SCC. Nuclear ERRα staining was observed in 8/33 (24%) LS-dependent and 10/17 (59%) LS-independent SCC samples. CONCLUSIONS ERRα, a key regulator of cell energy metabolism, may play a role in the pathogenesis of both LS and vulvar SCC.
Collapse
Affiliation(s)
- M Lagerstedt
- Department of Dermatology, Tampere University Hospital, Finland; School of Medicine, University of Tampere, Finland.
| | - R Huotari-Orava
- School of Medicine, University of Tampere, Finland; Fimlab Laboratories, Tampere, Finland
| | - R Nyberg
- Department of Obstetrics and Gynecology, Tampere University Hospital, Finland
| | - J U Mäenpää
- School of Medicine, University of Tampere, Finland; Department of Obstetrics and Gynecology, Tampere University Hospital, Finland
| | - E Snellman
- Department of Dermatology, Tampere University Hospital, Finland; School of Medicine, University of Tampere, Finland
| | - S-L Laasanen
- Department of Dermatology, Tampere University Hospital, Finland
| |
Collapse
|
386
|
The Nrf2/HO-1 Axis in Cancer Cell Growth and Chemoresistance. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:1958174. [PMID: 26697129 PMCID: PMC4677237 DOI: 10.1155/2016/1958174] [Citation(s) in RCA: 204] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/13/2015] [Accepted: 08/18/2015] [Indexed: 12/20/2022]
Abstract
The transcription factor, nuclear factor erythroid 2 p45-related factor 2 (Nrf2), acts as a sensor of oxidative or electrophilic stresses and plays a pivotal role in redox homeostasis. Oxidative or electrophilic agents cause a conformational change in the Nrf2 inhibitory protein Keap1 inducing the nuclear translocation of the transcription factor which, through its binding to the antioxidant/electrophilic response element (ARE/EpRE), regulates the expression of antioxidant and detoxifying genes such as heme oxygenase 1 (HO-1). Nrf2 and HO-1 are frequently upregulated in different types of tumours and correlate with tumour progression, aggressiveness, resistance to therapy, and poor prognosis. This review focuses on the Nrf2/HO-1 stress response mechanism as a promising target for anticancer treatment which is able to overcome resistance to therapies.
Collapse
|
387
|
Differences in Redox Regulatory Systems in Human Lung and Liver Tumors Suggest Different Avenues for Therapy. Cancers (Basel) 2015; 7:2262-76. [PMID: 26569310 PMCID: PMC4695889 DOI: 10.3390/cancers7040889] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/14/2015] [Accepted: 10/29/2015] [Indexed: 12/26/2022] Open
Abstract
A common characteristic of many cancer cells is that they suffer from oxidative stress. They, therefore, require effective redox regulatory systems to combat the higher levels of reactive oxygen species that accompany accelerated growth compared to the normal cells of origin. An elevated dependence on these systems in cancers suggests that targeting these systems may provide an avenue for retarding the malignancy process. Herein, we examined the redox regulatory systems in human liver and lung cancers by comparing human lung adenocarcinoma and liver carcinoma to their respective surrounding normal tissues. Significant differences were found in the two major redox systems, the thioredoxin and glutathione systems. Thioredoxin reductase 1 levels were elevated in both malignancies, but thioredoxin was highly upregulated in lung tumor and only slightly upregulated in liver tumor, while peroxiredoxin 1 was highly elevated in lung tumor, but downregulated in liver tumor. There were also major differences within the glutathione system between the malignancies and their normal tissues. The data suggest a greater dependence of liver on either the thioredoxin or glutathione system to drive the malignancy, while lung cancer appeared to depend primarily on the thioredoxin system.
Collapse
|
388
|
Tebay LE, Robertson H, Durant ST, Vitale SR, Penning TM, Dinkova-Kostova AT, Hayes JD. Mechanisms of activation of the transcription factor Nrf2 by redox stressors, nutrient cues, and energy status and the pathways through which it attenuates degenerative disease. Free Radic Biol Med 2015; 88:108-146. [PMID: 26122708 PMCID: PMC4659505 DOI: 10.1016/j.freeradbiomed.2015.06.021] [Citation(s) in RCA: 597] [Impact Index Per Article: 66.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/09/2015] [Accepted: 06/10/2015] [Indexed: 12/11/2022]
Abstract
UNLABELLED Nuclear factor-erythroid 2 p45-related factor 2 (Nrf2) regulates the basal and stress-inducible expression of a battery of genes encoding key components of the glutathione-based and thioredoxin-based antioxidant systems, as well as aldo-keto reductase, glutathione S-transferase, and NAD(P)H quinone oxidoreductase-1 drug-metabolizing isoenzymes along with multidrug-resistance-associated efflux pumps. It therefore plays a pivotal role in both intrinsic resistance and cellular adaptation to reactive oxygen species (ROS) and xenobiotics. Activation of Nrf2 can, however, serve as a double-edged sword because some of the genes it induces may contribute to chemical carcinogenesis by promoting futile redox cycling of polycyclic aromatic hydrocarbon metabolites or confer resistance to chemotherapeutic drugs by increasing the expression of efflux pumps, suggesting its cytoprotective effects will vary in a context-specific fashion. In addition to cytoprotection, Nrf2 also controls genes involved in intermediary metabolism, positively regulating those involved in NADPH generation, purine biosynthesis, and the β-oxidation of fatty acids, while suppressing those involved in lipogenesis and gluconeogenesis. Nrf2 is subject to regulation at multiple levels. Its ability to orchestrate adaptation to oxidants and electrophiles is due principally to stress-stimulated modification of thiols within one of its repressors, the Kelch-like ECH-associated protein 1 (Keap1), which is present in the cullin-3 RING ubiquitin ligase (CRL) complex CRLKeap1. Thus modification of Cys residues in Keap1 blocks CRLKeap1 activity, allowing newly translated Nrf2 to accumulate rapidly and induce its target genes. The ability of Keap1 to repress Nrf2 can be attenuated by p62/sequestosome-1 in a mechanistic target of rapamycin complex 1 (mTORC1)-dependent manner, thereby allowing refeeding after fasting to increase Nrf2-target gene expression. In parallel with repression by Keap1, Nrf2 is also repressed by β-transducin repeat-containing protein (β-TrCP), present in the Skp1-cullin-1-F-box protein (SCF) ubiquitin ligase complex SCFβ-TrCP. The ability of SCFβ-TrCP to suppress Nrf2 activity is itself enhanced by prior phosphorylation of the transcription factor by glycogen synthase kinase-3 (GSK-3) through formation of a DSGIS-containing phosphodegron. However, formation of the phosphodegron in Nrf2 by GSK-3 is inhibited by stimuli that activate protein kinase B (PKB)/Akt. In particular, PKB/Akt activity can be increased by phosphoinositide 3-kinase and mTORC2, thereby providing an explanation of why antioxidant-responsive element-driven genes are induced by growth factors and nutrients. Thus Nrf2 activity is tightly controlled via CRLKeap1 and SCFβ-TrCP by oxidative stress and energy-based signals, allowing it to mediate adaptive responses that restore redox homeostasis and modulate intermediary metabolism. Based on the fact that Nrf2 influences multiple biochemical pathways in both positive and negative ways, it is likely its dose-response curve, in terms of susceptibility to certain degenerative disease, is U-shaped. Specifically, too little Nrf2 activity will lead to loss of cytoprotection, diminished antioxidant capacity, and lowered β-oxidation of fatty acids, while conversely also exhibiting heightened sensitivity to ROS-based signaling that involves receptor tyrosine kinases and apoptosis signal-regulating kinase-1. By contrast, too much Nrf2 activity disturbs the homeostatic balance in favor of reduction, and so may have deleterious consequences including overproduction of reduced glutathione and NADPH, the blunting of ROS-based signal transduction, epithelial cell hyperplasia, and failure of certain cell types to differentiate correctly. We discuss the basis of a putative U-shaped Nrf2 dose-response curve in terms of potentially competing processes relevant to different stages of tumorigenesis.
Collapse
Affiliation(s)
- Lauren E Tebay
- Jacqui Wood Cancer Centre, Division of Cancer Research, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, Scotland, UK
| | - Holly Robertson
- Jacqui Wood Cancer Centre, Division of Cancer Research, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, Scotland, UK
| | - Stephen T Durant
- AstraZeneca Oncology Innovative Medicines, Bioscience, 33F197 Mereside, Alderley Park, Cheshire SK10 4TG, UK
| | - Steven R Vitale
- Center of Excellence in Environmental Toxicology, Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104-6160, USA
| | - Trevor M Penning
- Center of Excellence in Environmental Toxicology, Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104-6160, USA
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cancer Research, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, Scotland, UK
| | - John D Hayes
- Jacqui Wood Cancer Centre, Division of Cancer Research, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, Scotland, UK.
| |
Collapse
|
389
|
Santilli F, D'Ardes D, Davì G. Oxidative stress in chronic vascular disease: From prediction to prevention. Vascul Pharmacol 2015; 74:23-37. [DOI: 10.1016/j.vph.2015.09.003] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/04/2015] [Accepted: 09/08/2015] [Indexed: 12/14/2022]
|
390
|
Clinicopathological characterisation of duodenal adenocarcinoma with high CD44 variant 9 expression. Pathology 2015; 47:647-52. [PMID: 26517627 DOI: 10.1097/pat.0000000000000330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
CD44 has been identified as a cancer stem cell (CSC) biomarker in various malignancies. The aim of this study was to elucidate the clinicopathological features of CD44v9 positive cells in duodenal adenocarcinoma (DA).Twenty-nine DA patients were selected from medical archives at our hospital. CD44v9 expression was analysed together with that of MUC2, MUC5AC, and MUC6 by immunohistochemistry. High levels of CD44v9 expression weakly correlated with inflammatory cell infiltration (r = 0.431, p = 0.020) and MUC6 expression (r = 0.425, p = 0.022). Furthermore, double immunofluorescence staining of CD44v9 and Ki-67 or cleaved caspase 3 (CC3) was performed. High- and low-density areas of CD44v9 positive cells were designated as CD44v9 positive and negative areas, respectively. Within CD44v9 positive areas, the level of Ki-67 positivity among CD44v9 positive cells was significantly lower than that of CD44v9 negative cells (p = 0.002). Meanwhile, the level of CC3 positivity among CD44v9 positive cells was significantly lower than that of CD44v9 negative cells (p < 0.001).CD44v9 expression may be affected by mononuclear cell infiltration and MUC6 expression in DA. CD44v9 positive cells also have a low mitotic activity and resist apoptosis. These characteristics suggest that CD44v9 positive cells possess CSC-like properties in DA.
Collapse
|
391
|
Dasari SR, Velma V, Yedjou CG, Tchounwou PB. Preclinical Assessment of Low Doses of Cisplatin in the Management of Acute Promyelocytic Leukemia. ACTA ACUST UNITED AC 2015; 1. [PMID: 26900603 PMCID: PMC4758698 DOI: 10.16966/2381-3318.113] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cis-diamminedichloroplatinum (II) (cisplatin) is the most widely used chemotherapeutic drug for various cancers, but its effectiveness is limited by tumor cell resistance and the severe side effects it causes. Since high level of cisplatin is cytotoxic to both cancer and normal cells, the goal of the present study was to explore the effectiveness of prolonged low doses of cisplatin in the management of leukemia. To achieve our goal, human leukemia (HL-60) cells were treated with different doses (1, 2, or 3 µM) of cisplatin for 24, 48, 72 and 96 hours. Cell viability was assessed by MTS assay. Both oxidative stress damage and genotoxicity were estimated by antioxidants, lipid peroxidation, and comet assays, respectively. Data obtained from the MTS assay demonstrated that cisplatin treatment decreased the number of viable tumor cells by direct cell killing or by simply decreasing the rate of cellular proliferation in a dose- and time-dependent fashion. The results of the lipid peroxidation showed a significant increase (p<0.05) of malondialdehyde levels with increasing cisplatin doses. Results obtained from super oxide dismutase and catalase assays showed a gradual increase in antioxidant enzyme activity in cisplatin-treated cells compared to control cells. Data generated from the Comet assay demonstrated a significant dose-dependent increase in genotoxicity with respect to DNA damage as a result of cisplatin treatment. Taken together, our research demonstrated that cisplatin-induced cytotoxicity in HL-60 cells is mediated at least in part via induction of oxidative stress and oxidative damage.
Collapse
Affiliation(s)
- Shaloam R Dasari
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD RCMI-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box 18750, Jackson, MS 39217, USA
| | - Venkatramreddy Velma
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD RCMI-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box 18750, Jackson, MS 39217, USA
| | - Clement G Yedjou
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD RCMI-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box 18750, Jackson, MS 39217, USA
| | - Paul B Tchounwou
- Cellomics and Toxicogenomics Research Laboratory, NIH/NIMHD RCMI-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, 1400 Lynch Street, Box 18750, Jackson, MS 39217, USA
| |
Collapse
|
392
|
Comparison of carbon-sulfur and carbon-amine bond in therapeutic drug: 4β-S-aromatic heterocyclic podophyllum derivatives display antitumor activity. Sci Rep 2015; 5:14814. [PMID: 26443888 PMCID: PMC4595834 DOI: 10.1038/srep14814] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 09/03/2015] [Indexed: 02/05/2023] Open
Abstract
Herein is a first effort to systematically study the significance of carbon-sulfur (C-S) and carbon-amine (C-NH) bonds on the antitumor proliferation activity of podophyllum derivatives and their precise mechanism of apoptosis. Compared with the derivative modified by a C-NH bond, the derivative modified by a C-S bond exhibited superior antitumor activity, the inhibition activity of target proteins tubulin or Topo II, cell cycle arrest, and apoptosis induction. Antitumor mechanistic studies showed that the death receptor and the mitochondrial apoptotic pathways were simultaneously activated by the C-S bond modified aromatic heterocyclic podophyllum derivatives with a higher cellular uptake percentage of 60-90% and induction of a higher level of reactive oxygen species (ROS). Only the mitochondrial apoptotic pathway was activated by the C-NH bond modified aromatic heterocyclic podophyllum derivatives, with a lower cellular uptake percentage of 40-50%. This study provided insight into effects of the C-S and C-NH bond modification on the improvement of the antitumor activity of Podophyllum derivatives.
Collapse
|
393
|
Ozer U, Barbour KW, Clinton SA, Berger FG. Oxidative Stress and Response to Thymidylate Synthase-Targeted Antimetabolites. Mol Pharmacol 2015; 88:970-81. [PMID: 26443810 DOI: 10.1124/mol.115.099614] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 10/05/2015] [Indexed: 01/09/2023] Open
Abstract
Thymidylate synthase (TYMS; EC 2.1.1.15) catalyzes the reductive methylation of 2'-deoxyuridine-5'-monophosphate (dUMP) by N(5),N(10)-methyhlenetetrahydrofolate, forming dTMP for the maintenance of DNA replication and repair. Inhibitors of TYMS have been widely used in the treatment of neoplastic disease. A number of fluoropyrimidine and folate analogs have been developed that lead to inhibition of the enzyme, resulting in dTMP deficiency and cell death. In the current study, we have examined the role of oxidative stress in response to TYMS inhibitors. We observed that intracellular reactive oxygen species (ROS) concentrations are induced by these inhibitors and promote apoptosis. Activation of the enzyme NADPH oxidase (NOX), which catalyzes one-electron reduction of O2 to generate superoxide (O2 (●-)), is a significant source of increased ROS levels in drug-treated cells. However, gene expression profiling revealed a number of other redox-related genes that may contribute to ROS generation. TYMS inhibitors also induce a protective response, including activation of the transcription factor nuclear factor E2-related factor 2 (NRF2), a critical mediator of defense against oxidative and electrophilic stress. Our results show that exposure to TYMS inhibitors induces oxidative stress that leads to cell death, while simultaneously generating a protective response that may underlie resistance against such death.
Collapse
Affiliation(s)
- Ufuk Ozer
- Department of Biological Sciences, and Center for Colon Cancer Research, University of South Carolina, Columbia, South Carolina
| | - Karen W Barbour
- Department of Biological Sciences, and Center for Colon Cancer Research, University of South Carolina, Columbia, South Carolina
| | - Sarah A Clinton
- Department of Biological Sciences, and Center for Colon Cancer Research, University of South Carolina, Columbia, South Carolina
| | - Franklin G Berger
- Department of Biological Sciences, and Center for Colon Cancer Research, University of South Carolina, Columbia, South Carolina
| |
Collapse
|
394
|
Tomasin R, de Andrade RS, Gomes-Marcondes MCC. Oral Administration ofAloe vera(L.) Burm. f. (Xanthorrhoeaceae) and Honey Improves the Host Body Composition and Modulates Proteolysis Through Reduction of Tumor Progression and Oxidative Stress in Rats. J Med Food 2015; 18:1128-35. [DOI: 10.1089/jmf.2014.0129] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Rebeka Tomasin
- Laboratory of Nutrition and Cancer, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas–UNICAMP, Campinas, São Paulo, Brazil
| | - Rafael Siqueira de Andrade
- Laboratory of Nutrition and Cancer, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas–UNICAMP, Campinas, São Paulo, Brazil
| | - Maria Cristina Cintra Gomes-Marcondes
- Laboratory of Nutrition and Cancer, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas–UNICAMP, Campinas, São Paulo, Brazil
| |
Collapse
|
395
|
Gupta SC, Singh R, Pochampally R, Watabe K, Mo YY. Acidosis promotes invasiveness of breast cancer cells through ROS-AKT-NF-κB pathway. Oncotarget 2015; 5:12070-82. [PMID: 25504433 PMCID: PMC4322981 DOI: 10.18632/oncotarget.2514] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 09/24/2014] [Indexed: 01/24/2023] Open
Abstract
It is well known that acidic microenvironment promotes tumorigenesis, however, the underlying mechanism remains largely unknown. In the present study, we show that acidosis promotes invasiveness of breast cancer cells through a series of signaling events. First, our study indicates that NF-κB is a key factor for acidosis-induced cell invasion. Acidosis activates NF-κB without affecting STAT3 activity; knockdown of NF-κB p65 abrogates the acidosis-induced invasion activity. Next, we show that the activation of NF-κB is mediated through phosphorylation and degradation of IκBα; and phosphorylation and nuclear translocation of p65. Upstream to NF-κB signaling, AKT is activated under acidic conditions. Moreover, acidosis induces generation of reactive oxygen species (ROS) which can be suppressed by ROS scavengers, reversing the acidosis-induced activation of AKT and NF-κB, and invasiveness. As a negative regulator of AKT, PTEN is oxidized and inactivated by the acidosis-induced ROS. Finally, inhibition of NADPH oxidase (NOX) suppresses acidosis-induced ROS production, suggesting involvement of NOX in acidosis-induced signaling cascade. Of considerable interest, acidosis-induced ROS production and activation of AKT and NF-κB can be only detected in cancer cells, but not in non-malignant cells. Together, these results demonstrate a cancer specific acidosis-induced signaling cascade in breast cancer cells, leading to cell invasion.
Collapse
Affiliation(s)
- Subash C Gupta
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS. Department of Biochemistry, University of Mississippi Medical Center, Jackson, MS
| | - Ramesh Singh
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS. Department of Biochemistry, University of Mississippi Medical Center, Jackson, MS
| | - Radhika Pochampally
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS. Department of Biochemistry, University of Mississippi Medical Center, Jackson, MS
| | - Kounosuke Watabe
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS. Department of Microbiology, University of Mississippi Medical Center, Jackson, MS
| | - Yin-Yuan Mo
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS. Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS
| |
Collapse
|
396
|
Rapino S, Marcu R, Bigi A, Soldà A, Marcaccio M, Paolucci F, Pelicci PG, Giorgio M. Scanning electro-chemical microscopy reveals cancer cell redox state. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.04.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
397
|
Hu XY, Liang JY, Guo XJ, Liu L, Guo YB. 5-Fluorouracil combined with apigenin enhances anticancer activity through mitochondrial membrane potential (ΔΨm)-mediated apoptosis in hepatocellular carcinoma. Clin Exp Pharmacol Physiol 2015; 42:146-53. [PMID: 25363523 DOI: 10.1111/1440-1681.12333] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 10/15/2014] [Accepted: 10/17/2014] [Indexed: 12/17/2022]
Abstract
The development of chemoresistance may reduce the efficacy of chemotherapeutic drugs for treating hepatocellular carcinoma (HCC). In the present study, the effects of apigenin on intensifying the chemosensitivity of HCC cells and an HCC xenograft model in response to 5-fluorouracil (5-FU) were investigated. Sub-toxic concentrations of apigenin (4 μmol/L) significantly enhanced the cytotoxicity of 5-FU (100 μg/mL) in HCC cells. In vivo, combined treatment with apigenin (20 mg/kg, five times/week for 3 weeks) and 5-FU (20 mg/kg for 5 consecutive days) significantly inhibited the growth of HCC xenograft tumours. Annexin V-propidium iodide dual staining assays, terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick end-labelling assays and western blotting analysis were used to confirm the synergistic effects of apigenin and 5-FU on HCC apoptosis. Coincubation of HCC cells with apigenin and 5-FU increased levels of reactive oxygen species (ROS), which was followed by a decrease in the mitochondrial membrane potential (ΔΨm). In addition, combined triggered the mitochondrial apoptotic pathway, as indicated by decreased Bcl-2 expression and loss of ΔΨm, with significant activation of caspase 3 and poly(ADP-ribose) polymerase. The present study is the first to demonstrate that apigenin may potentiate the cytotoxicity of 5-FU in HCC via inhibition of ROS-mediated drug resistance and concurrent activation of the mitochondrial pathways of apoptosis.
Collapse
Affiliation(s)
- Xiao-Yun Hu
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | | | | | | | | |
Collapse
|
398
|
Li Y, Zhang LP, Dai F, Yan WJ, Wang HB, Tu ZS, Zhou B. Hexamethoxylated Monocarbonyl Analogues of Curcumin Cause G2/M Cell Cycle Arrest in NCI-H460 Cells via Michael Acceptor-Dependent Redox Intervention. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:7731-7742. [PMID: 26255837 DOI: 10.1021/acs.jafc.5b02011] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Curcumin, derived from the dietary spice turmeric, holds promise for cancer prevention. This prompts much interest in investigating the action mechanisms of curcumin and its analogues. Two symmetrical hexamethoxy-diarylpentadienones (1 and 2) as cucumin analogues were reported to possess significantly enhanced cytotoxicity compared with the parent molecule. However, the detailed mechanisms remain unclear. In this study, compounds 1 and 2 were identified as the G2/M cell cycle arrest agents to mediate the cytotoxicity toward NCI-H460 cells via Michael acceptor-dependent redox intervention. Compared with curcumin, they could more easily induce a burst of reactive oxygen species (ROS) and collapse of the redox buffering system. One possible reason is that they could more effectively target intracellular TrxR to convert this antioxidant enzyme into a ROS promoter. Additionally, they caused up-regulation of p53 and p21 and down-regulation of redox-sensitive Cdc25C along with cyclin B1/Cdk1 in a Michael acceptor- and ROS-dependent fashion. Interestingly, in comparison with compound 2, compound 1 displayed a relatively weak ability to generate ROS but increased cell cycle arrest activity and cytotoxicity probably due to its Michael acceptor-dependent microtubule-destabilizing effect and greater GST-inhibitory activity, as well as its enhanced cellular uptake. This work provides useful information for understanding Michael acceptor-dependent and redox-mediated cytotoxic mechanisms of curcumin and its active analogues.
Collapse
Affiliation(s)
- Yan Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou, Gansu 730000, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Institute of Applied Chemistry, Shaoxing University , Shaoxing, Zhejiang 312000, China
| | - Li-Ping Zhang
- Gansu Provincial Hosipital , Lanzhou, Gansu 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou, Gansu 730000, China
| | - Wen-Jing Yan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou, Gansu 730000, China
| | - Hai-Bo Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou, Gansu 730000, China
| | - Zhi-Shan Tu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou, Gansu 730000, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou, Gansu 730000, China
| |
Collapse
|
399
|
Görlach A, Dimova EY, Petry A, Martínez-Ruiz A, Hernansanz-Agustín P, Rolo AP, Palmeira CM, Kietzmann T. Reactive oxygen species, nutrition, hypoxia and diseases: Problems solved? Redox Biol 2015; 6:372-385. [PMID: 26339717 PMCID: PMC4565025 DOI: 10.1016/j.redox.2015.08.016] [Citation(s) in RCA: 245] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/21/2015] [Accepted: 08/25/2015] [Indexed: 02/06/2023] Open
Abstract
Within the last twenty years the view on reactive oxygen species (ROS) has changed; they are no longer only considered to be harmful but also necessary for cellular communication and homeostasis in different organisms ranging from bacteria to mammals. In the latter, ROS were shown to modulate diverse physiological processes including the regulation of growth factor signaling, the hypoxic response, inflammation and the immune response. During the last 60–100 years the life style, at least in the Western world, has changed enormously. This became obvious with an increase in caloric intake, decreased energy expenditure as well as the appearance of alcoholism and smoking; These changes were shown to contribute to generation of ROS which are, at least in part, associated with the occurrence of several chronic diseases like adiposity, atherosclerosis, type II diabetes, and cancer. In this review we discuss aspects and problems on the role of intracellular ROS formation and nutrition with the link to diseases and their problematic therapeutical issues. Oxidative stress is linked to overnutrition, obesity and associated diseases or cancer. Reactive oxygen species (ROS) are crucially involved in modulation of signaling cascades. NOX proteins and hypoxia contribute to formation of ROS under different nutrient regimes. ROS are powerful post-transcriptional and epigenetic regulators. Treatment of obesity with antioxidants requires more, larger, and better monitored clinical trials.
Collapse
Affiliation(s)
- Agnes Görlach
- Experimental and Molecular Pediatric Cardiology, German Heart Center Munich, Technical University Munich, Germany; DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Elitsa Y Dimova
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Andreas Petry
- Experimental and Molecular Pediatric Cardiology, German Heart Center Munich, Technical University Munich, Germany; DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Antonio Martínez-Ruiz
- Servicio de Immunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Pablo Hernansanz-Agustín
- Servicio de Immunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Anabela P Rolo
- Department of Life Sciences, University of Coimbra and Center for Neurosciences and Cell Biology, University of Coimbra, Portugal
| | - Carlos M Palmeira
- Department of Life Sciences, University of Coimbra and Center for Neurosciences and Cell Biology, University of Coimbra, Portugal
| | - Thomas Kietzmann
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland.
| |
Collapse
|
400
|
Ribeiro DL, Cilião HL, Specian AFL, Serpeloni JM, de Souza MF, Tangerina MMP, Vilegas W, Boldrin PK, Resende FA, Varanda EA, Martínez-López W, Sannomiya M, Cólus IMS. Chemical and biological characterisation of Machaerium hirtum (Vell.) Stellfeld: absence of cytotoxicity and mutagenicity and possible chemopreventive potential. Mutagenesis 2015; 31:147-60. [PMID: 26314304 DOI: 10.1093/mutage/gev066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Machaerium hirtum (Vell.) Stellfeld (M.hirtum) is a plant known as 'jacarandá-bico-de-pato' whose bark is commonly used against diarrhea, cough and cancer. The aim of this study was to phytochemically characterise the hydroethanolic extract of this plant, investigate its antimutagenic activities using the Ames test and evaluate its effects on cell viability, genomic instability, gene expression and cell protection in human hepatocellular carcinoma cells (HepG2). Antimutagenic activity was assessed by simultaneous pre- and post-treatment with direct and indirect mutagens, such as 4-nitro-o-phenylenediamine (NPD), mitomycin C (MMC), benzo[a]pyrene (B[a]P) and aflatoxin B1 (AFB1), using the Ames test, cytokinesis blocking micronucleus and apoptosis assays. Only 3 of the 10 concentrations evaluated in the MTT assay were cytotoxic in HepG2 cells. Micronucleated or apoptotic cells were not observed with any of the tested concentrations, and there were no mutagenic effects in the bacterial system. However, the Nuclear Division Index and flow cytometry data showed a decrease in cell proliferation. The extract showed an inhibitory effect against direct (NPD) and indirect mutagens (B[a]P and AFB1). Furthermore, pre- and post-treated cells showed significant reduction in the number of apoptotic and micronucleated cells. This effect is not likely to be associated with the modulation of antioxidant genes, as shown by the RT-qPCR results. Six known flavonoids were identified in the hydroethanolic extract of Machaerium hirtum leaves, and their structures were elucidated by spectroscopic and spectrophotometric methods. The presence of the antioxidants apigenin and luteolin may explain these protective effects, because these components can inhibit the formation of reactive species and prevent apoptosis and DNA damage. In conclusion, the M.hirtum extract showed chemopreventive potential and was not hazardous at the tested concentrations in the experiments presented here. Moreover, this extract should be investigated further as a chemopreventive agent.
Collapse
Affiliation(s)
- Diego Luis Ribeiro
- Department of General Biology, Center of Biologic Sciences, State University of Londrina - UEL, Londrina, PR, Brazil
| | - Heloísa Lizotti Cilião
- Department of General Biology, Center of Biologic Sciences, State University of Londrina - UEL, Londrina, PR, Brazil
| | - Ana Flávia Leal Specian
- Department of General Biology, Center of Biologic Sciences, State University of Londrina - UEL, Londrina, PR, Brazil
| | - Juliana Mara Serpeloni
- Department of General Biology, Center of Biologic Sciences, State University of Londrina - UEL, Londrina, PR, Brazil, Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University - UNESP, Araraquara, SP, Brazil
| | - Marilesia Ferreira de Souza
- Department of General Biology, Center of Biologic Sciences, State University of Londrina - UEL, Londrina, PR, Brazil
| | | | - Wagner Vilegas
- Coastal Campus, São Paulo State University - UNESP, São Vicente, SP, Brazil
| | - Paula Karina Boldrin
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University - UNESP, Araraquara, SP, Brazil
| | - Flávia Aparecida Resende
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University - UNESP, Araraquara, SP, Brazil
| | - Eliana Aparecida Varanda
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University - UNESP, Araraquara, SP, Brazil
| | | | - Miriam Sannomiya
- School of Arts, Science and Humanities, São Paulo University-USP, São Paulo, SP, Brazil
| | - Ilce Mara Syllos Cólus
- Department of General Biology, Center of Biologic Sciences, State University of Londrina - UEL, Londrina, PR, Brazil,
| |
Collapse
|