1
|
Sanati M, Afshari AR, Ahmadi SS, Moallem SA, Sahebkar A. Modulation of the ubiquitin-proteasome system by phytochemicals: Therapeutic implications in malignancies with an emphasis on brain tumors. Biofactors 2023; 49:782-819. [PMID: 37162294 DOI: 10.1002/biof.1958] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/20/2023] [Indexed: 05/11/2023]
Abstract
Regarding the multimechanistic nature of cancers, current chemo- or radiotherapies often fail to eradicate disease pathology, and frequent relapses or resistance to therapies occur. Brain malignancies, particularly glioblastomas, are difficult-to-treat cancers due to their highly malignant and multidimensional biology. Unfortunately, patients suffering from malignant tumors often experience poor prognoses and short survival periods. Thus far, significant efforts have been conducted to discover novel and more effective modalities. To that end, modulation of the ubiquitin-proteasome system (UPS) has attracted tremendous interest since it affects the homeostasis of proteins critically engaged in various cell functions, for example, cell metabolism, survival, proliferation, and differentiation. With their safe and multimodal actions, phytochemicals are among the promising therapeutic tools capable of turning the operation of various UPS elements. The present review, along with an updated outline of the role of UPS dysregulation in multiple cancers, provided a detailed discussion on the impact of phytochemicals on the UPS function in malignancies, especially brain tumors.
Collapse
Affiliation(s)
- Mehdi Sanati
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Birjand University of Medical Sciences, Birjand, Iran
- Experimental and Animal Study Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Amir R Afshari
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
- Department of Physiology and Pharmacology, Faculty of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Seyed Sajad Ahmadi
- Department of Ophthalmology, Khatam-Ol-Anbia Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Adel Moallem
- Department of Pharmacology and Toxicology, College of Pharmacy, Al-Zahraa University for Women, Karbala, Iraq
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
2
|
Akter R, Rahman MH, Kaushik D, Mittal V, Uivarosan D, Nechifor AC, Behl T, Karthika C, Stoicescu M, Munteanu MA, Bustea C, Bungau S. Chemo-Preventive Action of Resveratrol: Suppression of p53-A Molecular Targeting Approach. Molecules 2021; 26:molecules26175325. [PMID: 34500758 PMCID: PMC8433711 DOI: 10.3390/molecules26175325] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/24/2021] [Accepted: 08/30/2021] [Indexed: 12/17/2022] Open
Abstract
Extensive experimental, clinical, and epidemiological evidence has explained and proven that products of natural origin are significantly important in preventing and/or ameliorating various disorders, including different types of cancer that researchers are extremely focused on. Among these studies on natural active substances, one can distinguish the emphasis on resveratrol and its properties, especially the potential anticancer role. Resveratrol is a natural product proven for its therapeutic activity, with remarkable anti-inflammatory properties. Various other benefits/actions have also been reported, such as cardioprotective, anti-ageing, antioxidant, etc. and its rapid digestion/absorption as well. This review aims to collect and present the latest published studies on resveratrol and its impact on cancer prevention, molecular signals (especially p53 protein participation), and its therapeutic prospects. The most recent information regarding the healing action of resveratrol is presented and concentrated to create an updated database focused on this topic presented above.
Collapse
Affiliation(s)
- Rokeya Akter
- Department of Pharmacy, Jagannath University, Sadarghat, Dhaka 1100, Bangladesh;
- Department of Global Medical Science, Yonsei University Wonju College of Medicine, Yonsei University, Wonju 26426, Korea
| | - Md. Habibur Rahman
- Department of Global Medical Science, Yonsei University Wonju College of Medicine, Yonsei University, Wonju 26426, Korea
- Department of Pharmacy, Southeast University, Banani, Dhaka 1213, Bangladesh
- Correspondence: (M.H.R.); (S.B.)
| | - Deepak Kaushik
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, India; (D.K.); (V.M.)
| | - Vineet Mittal
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak 124001, India; (D.K.); (V.M.)
| | - Diana Uivarosan
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania;
| | - Aurelia Cristina Nechifor
- Analytical Chemistry and Environmental Engineering Department, Polytechnic University of Bucharest, 011061 Bucharest, Romania;
| | - Tapan Behl
- Department of Pharmacology, Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India;
| | - Chenmala Karthika
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty 643001, India;
| | - Manuela Stoicescu
- Department of Medical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (M.S.); (M.A.M.); (C.B.)
| | - Mihai Alexandru Munteanu
- Department of Medical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (M.S.); (M.A.M.); (C.B.)
| | - Cristiana Bustea
- Department of Medical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (M.S.); (M.A.M.); (C.B.)
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania
- Doctoral School of Biological and Biomedical Sciences, University of Oradea, 410087 Oradea, Romania
- Correspondence: (M.H.R.); (S.B.)
| |
Collapse
|
3
|
Russo GL, Stampone E, Cervellera C, Borriello A. Regulation of p27 Kip1 and p57 Kip2 Functions by Natural Polyphenols. Biomolecules 2020; 10:biom10091316. [PMID: 32933137 PMCID: PMC7564754 DOI: 10.3390/biom10091316] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/01/2020] [Accepted: 09/09/2020] [Indexed: 12/14/2022] Open
Abstract
In numerous instances, the fate of a single cell not only represents its peculiar outcome but also contributes to the overall status of an organism. In turn, the cell division cycle and its control strongly influence cell destiny, playing a critical role in targeting it towards a specific phenotype. Several factors participate in the control of growth, and among them, p27Kip1 and p57Kip2, two proteins modulating various transitions of the cell cycle, appear to play key functions. In this review, the major features of p27 and p57 will be described, focusing, in particular, on their recently identified roles not directly correlated with cell cycle modulation. Then, their possible roles as molecular effectors of polyphenols’ activities will be discussed. Polyphenols represent a large family of natural bioactive molecules that have been demonstrated to exhibit promising protective activities against several human diseases. Their use has also been proposed in association with classical therapies for improving their clinical effects and for diminishing their negative side activities. The importance of p27Kip1 and p57Kip2 in polyphenols’ cellular effects will be discussed with the aim of identifying novel therapeutic strategies for the treatment of important human diseases, such as cancers, characterized by an altered control of growth.
Collapse
Affiliation(s)
- Gian Luigi Russo
- National Research Council, Institute of Food Sciences, 83100 Avellino, Italy;
- Correspondence: (G.L.R.); (A.B.); Tel.: +39-0825-299-331 (G.L.R.)
| | - Emanuela Stampone
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 81031 Napoli, Italy;
| | - Carmen Cervellera
- National Research Council, Institute of Food Sciences, 83100 Avellino, Italy;
| | - Adriana Borriello
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 81031 Napoli, Italy;
- Correspondence: (G.L.R.); (A.B.); Tel.: +39-0825-299-331 (G.L.R.)
| |
Collapse
|
4
|
Al-Attar T, Madihally SV. Targeted cancer treatment using a combination of siRNA-liposomes and resveratrol-electrospun fibers in co-cultures. Int J Pharm 2019; 569:118599. [DOI: 10.1016/j.ijpharm.2019.118599] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/31/2019] [Accepted: 08/03/2019] [Indexed: 12/11/2022]
|
5
|
Golonko A, Pienkowski T, Swislocka R, Lazny R, Roszko M, Lewandowski W. Another look at phenolic compounds in cancer therapy the effect of polyphenols on ubiquitin-proteasome system. Eur J Med Chem 2019; 167:291-311. [PMID: 30776692 DOI: 10.1016/j.ejmech.2019.01.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 12/26/2022]
Abstract
Inhibitors of the ubiquitin-proteasome system (UPS) have been the object of research interests for many years because of their potential as anti-cancer agents. Research in this field is aimed at improving the specificity and safety of known proteasome inhibitors. Unfortunately, in vitro conditions do not reflect the processes taking place in the human body. Recent reports indicate that the components of human plasma affect the course of many signaling pathways, proteasome activity and the effectiveness of synthetic cytostatic drugs. Therefore, it is believed that the key issue is to determine the effects of components of the human diet, including effects of chemically active polyphenols on the ubiquitin-proteasome system activity in both physiological and pathological (cancerous) states. The following article summarizes the current knowledge on the direct and indirect synergistic and antagonistic effects between polyphenolic compounds present in the human diet and the efficiency of protein degradation via the UPS.
Collapse
Affiliation(s)
- Aleksandra Golonko
- Department of Food Analysis, Institute of Agricultural and Food Biotechnology, Rakowiecka 36, 02-532, Warsaw, Poland
| | - Tomasz Pienkowski
- Bialystok University of Technology, Faculty of Civil Engineering and Environmental Engineering, Department of Chemistry, Biology and Biotechnology, Wiejska 45E, 15-351, Bialystok, Poland
| | - Renata Swislocka
- Bialystok University of Technology, Faculty of Civil Engineering and Environmental Engineering, Department of Chemistry, Biology and Biotechnology, Wiejska 45E, 15-351, Bialystok, Poland
| | - Ryszard Lazny
- Institut of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245, Bialystok, Poland
| | - Marek Roszko
- Department of Food Analysis, Institute of Agricultural and Food Biotechnology, Rakowiecka 36, 02-532, Warsaw, Poland
| | - Wlodzimierz Lewandowski
- Department of Food Analysis, Institute of Agricultural and Food Biotechnology, Rakowiecka 36, 02-532, Warsaw, Poland.
| |
Collapse
|
6
|
Influence of controlled release of resveratrol from electrospun fibers in combination with siRNA on leukemia cells. Eur J Pharm Sci 2018; 123:173-183. [DOI: 10.1016/j.ejps.2018.07.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/23/2018] [Accepted: 07/20/2018] [Indexed: 12/16/2022]
|
7
|
Catanzaro E, Calcabrini C, Turrini E, Sestili P, Fimognari C. Nrf2: a potential therapeutic target for naturally occurring anticancer drugs? Expert Opin Ther Targets 2017; 21:781-793. [PMID: 28675319 DOI: 10.1080/14728222.2017.1351549] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Nuclear factor (erythroid-derived-2)-like 2 is one of the most efficient cytoprotective rheostats against exogenous or endogenous oxidative insults. At present, the modulation of the Nrf2 pathway represents an interesting and highly explored strategy in the oncological area. Area covered: In this review, we present and discuss the different modulation of the Nrf2 pathway by some natural compounds with a well demonstrated anticancer activity, and critically analyze the challenges associated with the development of an Nrf2-based anticancer strategy. Expert opinion: Many natural compounds with a well-defined anticancer activity are able to modulate this pathway. Both Nrf2 inducers and inhibitors can be useful as anticancer strategy. However, since Nrf2 modulates many networks potentially involved in the detoxification process of anticancer drugs, its activation in cancer cells could lead to chemoresistance. The switch between a beneficial or detrimental role of Nrf2 in cancer cells essentially depends on the tight control of its activity, the specific conditions of tumor microenvironment, and cell type. In line with the paucity of clear data related to the mechanisms underpinning the role of Nrf2 in cancer development and chemoresistance, discovery and development of Nrf2-based strategies is one of the most critical and challenging assignments for fighting cancers.
Collapse
Affiliation(s)
- Elena Catanzaro
- a Department for Life Quality Studies , Alma Mater Studiorum-University of Bologna , Rimini , Italy
| | - Cinzia Calcabrini
- a Department for Life Quality Studies , Alma Mater Studiorum-University of Bologna , Rimini , Italy
| | - Eleonora Turrini
- a Department for Life Quality Studies , Alma Mater Studiorum-University of Bologna , Rimini , Italy
| | - Piero Sestili
- b Department of Biomolecular Sciences , University of Urbino Carlo Bo , Urbino , Italy
| | - Carmela Fimognari
- a Department for Life Quality Studies , Alma Mater Studiorum-University of Bologna , Rimini , Italy
| |
Collapse
|
8
|
Abstract
Increasing epidemiological and experimental evidence has demonstrated an inverse relationship between the consumption of plant foods and the incidence of chronic diseases, including cancer. Microcomponents that are naturally present in such foods, especially polyphenols, are responsible for the benefits to human health. Resveratrol is a diet-derived cancer chemopreventive agent with high therapeutic potential, as demonstrated by different authors. The aim of this review is to collect and present recent evidence from the literature regarding resveratrol and its effects on cancer prevention, molecular signaling (especially regarding the involvement of p53 protein), and therapeutic perspectives with an emphasis on clinical trial results to date.
Collapse
|
9
|
Voutsadakis IA. Proteasome expression and activity in cancer and cancer stem cells. Tumour Biol 2017; 39:101042831769224. [DOI: 10.1177/1010428317692248] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
Proteasome is a multi-protein organelle that participates in cellular proteostasis by destroying damaged or short-lived proteins in an organized manner guided by the ubiquitination signal. By being in a central place in the cellular protein complement homeostasis, proteasome is involved in virtually all cell processes including decisions on cell survival or death, cell cycle, and differentiation. These processes are important also in cancer, and thus, the proteasome is an important regulator of carcinogenesis. Cancers include a variety of cells which, according to the cancer stem cell theory, descend from a small percentage of cancer stem cells, alternatively termed tumor-initiating cells. These cells constitute the subsets that have the ability to propagate the whole variety of cancer and repopulate tumors after cytostatic therapies. Proteasome plays a role in cellular processes in cancer stem cells, but it has been found to have a decreased function in them compared to the rest of cancer cells. This article will discuss the transcriptional regulation of proteasome sub-unit proteins in cancer and in particular cancer stem cells and the relationship of the proteasome with the pluripotency that is the defining characteristic of stem cells. Therapeutic opportunities that present from the understanding of the proteasome role will also be discussed.
Collapse
Affiliation(s)
- Ioannis A Voutsadakis
- Division of Medical Oncology, Department of Internal Medicine, Sault Area Hospital, Sault Ste. Marie, ON, Canada
- Division of Clinical Sciences, Northern Ontario School of Medicine, Sudbury, ON, Canada
| |
Collapse
|
10
|
Challenges in Analyzing the Biological Effects of Resveratrol. Nutrients 2016; 8:nu8060353. [PMID: 27294953 PMCID: PMC4924194 DOI: 10.3390/nu8060353] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/26/2016] [Accepted: 05/31/2016] [Indexed: 12/28/2022] Open
Abstract
The suggested health effects (e.g., disease prevention) of dietary bioactive compounds such as resveratrol are challenging to prove in comparison to man-made drugs developed for therapeutic purposes. Dietary bioactive compounds have multiple cellular targets and therefore have a variety of biological effects. Extrapolating the biological effects of dietary compounds from in vitro and in vivo animal experiments to humans may lead to over- or under-estimation of the effect and role of these compounds. The present paper will discuss a few of these challenges and suggest directions for future research. Questions we address include: (1) Is the combinatorial effect of resveratrol and other compounds real? (2) What are the real and relevant doses of resveratrol after administration? and (3) Is it possible to estimate the preventive effect of resveratrol by clinical trials using standard experimental designs? The examples concerning resveratrol taken from the scientific literature are mainly from 2010 and later. The challenges pointed out in this review are similar to most naturally occurring bioactive compounds.
Collapse
|
11
|
Sonnemann J, Kahl M, Siranjeevi PM, Blumrich A, Blümel L, Becker S, Wittig S, Winkler R, Krämer OH, Beck JF. Reverse chemomodulatory effects of the SIRT1 activators resveratrol and SRT1720 in Ewing's sarcoma cells: resveratrol suppresses and SRT1720 enhances etoposide- and vincristine-induced anticancer activity. J Cancer Res Clin Oncol 2015; 142:17-26. [PMID: 26055805 DOI: 10.1007/s00432-015-1994-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 11/27/2022]
Abstract
PURPOSE SIRT1-activating compounds (STACs) may have potential in the management of cancer. However, the best-studied STAC, the naturally occurring compound resveratrol, is reported to have contradictory effects in combination chemotherapy regimens: It has been shown both to increase and to decrease the action of anticancer agents. To shed more light on this issue, we comparatively investigated the impact of resveratrol and the synthetic STAC SRT1720 on the responsiveness of Ewing's sarcoma (ES) cells to the chemotherapeutic drugs etoposide and vincristine. METHODS Because the effects of STACs can depend on the functionality of the tumor suppressor protein p53, we used three ES cell lines differing in their p53 status, i.e., wild-type p53 WE-68 cells, mutant p53 SK-ES-1 cells and p53 null SK-N-MC cells. Single agent and combination therapy effects were assessed by flow cytometric analyses of propidium iodide uptake and mitochondrial depolarization, by measuring caspase 3/7 activity and by gene expression profiling. RESULTS When applied as single agents, both STACs were effective in ES cells irrespective of their p53 status. Strikingly, however, when applied in conjunction with cytostatic agents, the STACs displayed reverse effects: SRT1720 largely enhanced etoposide- and vincristine-induced cell death, while resveratrol inhibited it. Combination index analyses validated the antipodal impact of the STACs on the effectiveness of the chemotherapeutics. CONCLUSION These findings suggest that the synthetic STAC SRT1720 may be useful to enhance the efficacy of anticancer therapy in ES. But they also suggest that the dietary intake of the natural STAC resveratrol may be detrimental during chemotherapy of ES.
Collapse
Affiliation(s)
- Jürgen Sonnemann
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany.
- Klinik für Kinder- und Jugendmedizin, Friedrich-Schiller-Universität Jena, Kochstr. 2, 07745, Jena, Germany.
| | - Melanie Kahl
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - Priyanka M Siranjeevi
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - Annelie Blumrich
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - Lisa Blümel
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - Sabine Becker
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - Susan Wittig
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - René Winkler
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center, Obere Zahlbacher Str. 67, 55131, Mainz, Germany
| | - James F Beck
- Children's Clinic, Department of Pediatric Hematology and Oncology, Jena University Hospital, Jena, Germany
| |
Collapse
|
12
|
Bravo-Cuellar A, Hernández-Flores G, Lerma-Díaz JM, Domínguez-Rodríguez JR, Jave-Suárez LF, De Célis-Carrillo R, Aguilar-Lemarroy A, Gómez-Lomeli P, Ortiz-Lazareno PC. Pentoxifylline and the proteasome inhibitor MG132 induce apoptosis in human leukemia U937 cells through a decrease in the expression of Bcl-2 and Bcl-XL and phosphorylation of p65. J Biomed Sci 2013; 20:13. [PMID: 23445492 PMCID: PMC3618339 DOI: 10.1186/1423-0127-20-13] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 02/18/2013] [Indexed: 12/31/2022] Open
Abstract
Background In Oncology, the resistance of the cancerous cells to chemotherapy continues to be the principal limitation. The nuclear factor-kappa B (NF-κB) transcription factor plays an important role in tumor escape and resistance to chemotherapy and this factor regulates several pathways that promote tumor survival including some antiapoptotic proteins such as Bcl-2 and Bcl-XL. In this study, we investigated, in U937 human leukemia cells, the effects of PTX and the MG132 proteasome inhibitor, drugs that can disrupt the NF-κB pathway. For this, we evaluated viability, apoptosis, cell cycle, caspases-3, -8, -9, cytochrome c release, mitochondrial membrane potential loss, p65 phosphorylation, and the modification in the expression of pro- and antiapoptotic genes, and the Bcl-2 and Bcl-XL antiapoptotic proteins. Results The two drugs affect the viability of the leukemia cells in a time-dependent manner. The greatest percentage of apoptosis was obtained with a combination of the drugs; likewise, PTX and MG132 induce G1 phase cell cycle arrest and cleavage of caspases -3,-8, -9 and cytochrome c release and mitochondrial membrane potential loss in U937 human leukemia cells. In these cells, PTX and the MG132 proteasome inhibitor decrease p65 (NF-κB subunit) phosphorylation and the antiapoptotic proteins Bcl-2 and Bcl-XL. We also observed, with a combination of these drugs overexpression of a group of the proapoptotic genes BAX, DIABLO, and FAS while the genes BCL-XL, MCL-1, survivin, IκB, and P65 were downregulated. Conclusions The two drugs used induce apoptosis per se, this cytotoxicity was greater with combination of both drugs. These observations are related with the caspases -9, -3 cleavage and G1 phase cell cycle arrest, and a decrease in p65 phosphorylation and Bcl-2 and Bcl-XL proteins. As well as this combination of drugs promotes the upregulation of the proapoptotic genes and downregulation of antiapoptotic genes. These observations strongly confirm antileukemic potential.
Collapse
Affiliation(s)
- Alejandro Bravo-Cuellar
- División de Inmunología, Centro de Investigación Biomédica de Occidente CIBO, Instituto Mexicano del Seguro Social IMSS, Sierra Mojada 800, Col, Independencia, Guadalajara, Jalisco 44340, México
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Ding J, Sullivan DA. Aging and dry eye disease. Exp Gerontol 2012; 47:483-90. [PMID: 22569356 DOI: 10.1016/j.exger.2012.03.020] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 03/21/2012] [Accepted: 03/23/2012] [Indexed: 12/21/2022]
Abstract
Dry eye disease is a prevalent eye disorder that in particular affects the elderly population. One of the major causes of dry eye, meibomian gland dysfunction (MGD), shows increased prevalence with aging. MGD is caused by hyperkeratinization of the ductal epithelium of meibomian gland and reduced quantity and/or quality of meibum, the holocrine product that stabilizes and prevents the evaporation of the tear film. Of note, retinoids which are used in current anti-aging cosmetics may promote the development of MGD and dry eye disease. In this review, we will discuss the possible mechanisms of age-related MGD.
Collapse
Affiliation(s)
- Juan Ding
- Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, 20 Staniford St, Boston, MA 02114, USA.
| | | |
Collapse
|
14
|
Zunino SJ, Storms DH, Newman JW, Pedersen TL, Keen CL, Ducore JM. Resveratrol given intraperitoneally does not inhibit the growth of high-risk t(4;11) acute lymphoblastic leukemia cells in a NOD/SCID mouse model. Int J Oncol 2011; 40:1277-84. [PMID: 22200740 PMCID: PMC3270126 DOI: 10.3892/ijo.2011.1316] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 11/25/2011] [Indexed: 12/19/2022] Open
Abstract
The efficacy of resveratrol as a preventive agent against the growth of t(4;11) acute lymphoblastic leukemia (ALL) was evaluated in NOD.CB17-Prkdcscid/J mice engrafted with the human t(4;11) ALL SEM cell line. SEM cells were injected into the tail vein and engraftment was monitored by flow cytometry. Once engraftment was observed, mice were injected intraperitoneally with resveratrol (10 mg/kg body weight) dissolved in dimethylsulfoxide (DMSO) or DMSO alone (control) every other day, or vincristine (0.5 mg/kg body weight) 3 times per week for 4 weeks (n=16 per group). Comparisons of the percent of human leukemia cells in blood and survival curves showed resveratrol did not inhibit progression of the disease. Liquid chromatography-tandem mass spectrometry analyses of mouse sera showed resveratrol was rapidly metabolized to glucuronidated and sulfated forms 1 h post-injection, with low to no resveratrol or metabolites observed in sera by 24-48 h. These data indicate that in contrast to findings in in vitro models, parenterally administered resveratrol does not have potential as a preventive agent against high risk t(4;11) ALL.
Collapse
Affiliation(s)
- Susan J Zunino
- United States Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, 430 West Health Sciences Drive, Davis, CA 95616, USA.
| | | | | | | | | | | |
Collapse
|