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Protective Effects of ω-3 PUFA in Anthracycline-Induced Cardiotoxicity: A Critical Review. Int J Mol Sci 2017; 18:ijms18122689. [PMID: 29231904 PMCID: PMC5751291 DOI: 10.3390/ijms18122689] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 11/29/2017] [Accepted: 12/08/2017] [Indexed: 12/31/2022] Open
Abstract
It has been demonstrated that ω-3 polyunsaturated fatty acids (ω-3 PUFA) may exert a beneficial role as adjuvants in the prevention and treatment of many disorders, including cardiovascular diseases and cancer. Particularly, several in vitro and in vivo preclinical studies have shown the antitumor activity of ω-3 PUFA in different kinds of cancers, and several human studies have shown that ω-3 PUFA are able to decrease the risk of a series of cardiovascular diseases. Several mechanisms have been proposed to explain their pleiotropic beneficial effects. ω-3 PUFA have also been shown to prevent harmful side-effects (including cardiotoxicity and heart failure) induced by conventional and innovative anti-cancer drugs in both animals and patients. The available literature regarding the possible protective effects of ω-3 PUFA against anthracycline-induced cardiotoxicity, as well as the mechanisms involved, will be critically discussed herein. The study will analyze the critical role of different levels of ω-3 PUFA intake in determining the results of the combinatory studies with anthracyclines. Suggestions for future research will also be considered.
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Badr El-Din NK, Mahmoud AZ, Hassan TA, Ghoneum M. Baker's Yeast Sensitizes Metastatic Breast Cancer Cells to Paclitaxel In Vitro. Integr Cancer Ther 2017; 17:542-550. [PMID: 29161917 PMCID: PMC6041900 DOI: 10.1177/1534735417740630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Our earlier studies have demonstrated that phagocytosis of baker's yeast ( Saccharomyces cerevisiae) induces apoptosis in different cancer cell lines in vitro and in vivo. This study aimed to examine how baker's yeast sensitizes murine and human breast cancer cells (BCC) to paclitaxel in vitro. This sensitizing effect makes lower concentrations of chemotherapy more effective at killing cancer cells, thereby enhancing the capacity of treatment. Three BCC lines were used: the metastatic murine 4T1 line, the murine Ehrlich ascites carcinoma (EAC) line, and the human breast cancer MCF-7 line. Cells were cultured with different concentrations of paclitaxel in the presence or absence of baker's yeast. Cell survival and the IC50 values were determined by MTT assay and trypan blue exclusion method. Percent of DNA damage, apoptosis, and cell proliferation were examined by flow cytometry. Yeast alone and paclitaxel alone significantly decreased 4T1 cell viability postculture (24 and 48 hours), caused DNA damage, increased apoptosis, and suppressed cell proliferation. Baker's yeast in the presence of paclitaxel increased the sensitivity of 4T1 cells to chemotherapy and caused effects that were greater than either treatment alone. The chemosensitizing effect of yeast was also observed with murine EAC cells and human MCF-7 cells, but to a lesser extent. These data suggest that dietary baker's yeast is an effective chemosensitizer and can enhance the apoptotic capacity of paclitaxel against breast cancer cells in vitro. Baker's yeast may represent a novel adjuvant for chemotherapy treatment.
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Affiliation(s)
| | | | | | - Mamdooh Ghoneum
- 2 Drew University of Medicine and Science, Los Angeles, CA, USA
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53
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Brandão D, Ribeiro L. Dietary fatty acids modulation of human colon cancer cells: mechanisms and future perspectives. Int J Food Sci Nutr 2017; 69:437-450. [PMID: 28984495 DOI: 10.1080/09637486.2017.1382456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Colorectal cancer (CRC) is one of the most common malignancies worldwide and its pathogenesis is proven to be related with dietary patterns, namely dietary fatty acid (FA) intake. We reviewed the evidences regarding the effect of different dietary FAs on human CRC cell lines proliferation and apoptosis. Altogether, the results obtained from in vitro studies show that monounsaturated FAs lack evidence regarding both proliferation and apoptosis, whereas there is a consensus about the anti-proliferative and pro-apoptotic effects, involving different intracellular targets, of n-3 polyunsaturated FAs, while n-6 series show a similar effect or no effects. The response to these dietary components depends on the cell type as well as the amount and duration of exposure. These results highlight the importance of identifying molecular targets for dietary components aiming to interfere with one of the main risk factors related with CRC incidence and prevalence.
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Affiliation(s)
- D Brandão
- a Department of Biomedicine, Unit of Biochemistry , Faculty of Medicine of the University of Porto , Porto , Portugal.,b Department of Public Health and Forensic Sciences, and Medical Education , Faculty of Medicine of the University of Porto , Porto , Portugal
| | - L Ribeiro
- a Department of Biomedicine, Unit of Biochemistry , Faculty of Medicine of the University of Porto , Porto , Portugal.,b Department of Public Health and Forensic Sciences, and Medical Education , Faculty of Medicine of the University of Porto , Porto , Portugal.,c I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto , Porto , Portugal
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54
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Song M, Zhang X, Meyerhardt JA, Giovannucci EL, Ogino S, Fuchs CS, Chan AT. Marine ω-3 polyunsaturated fatty acid intake and survival after colorectal cancer diagnosis. Gut 2017; 66:1790-1796. [PMID: 27436272 PMCID: PMC5247396 DOI: 10.1136/gutjnl-2016-311990] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 05/31/2016] [Accepted: 06/12/2016] [Indexed: 12/08/2022]
Abstract
OBJECTIVE Experimental evidence supports an antineoplastic activity of marine ω-3 polyunsaturated fatty acids (ω-3 PUFAs; including eicosapentaenoic acid, docosahexaenoic acid and docosapentaenoic acid). However, the influence of ω-3 PUFAs on colorectal cancer (CRC) survival is unknown. DESIGN Within the Nurses' Health Study and Health Professionals Follow-up Study, we prospectively studied CRC-specific and overall mortality in a cohort of 1659 patients with CRC according to intake of marine ω-3 PUFAs and its change after diagnosis. RESULTS Higher intake of marine ω-3 PUFAs after CRC diagnosis was associated with lower risk of CRC-specific mortality (p for trend=0.03). Compared with patients who consumed <0.10 g/day of marine ω-3 PUFAs, those consuming at least 0.30 g/day had an adjusted HR for CRC-specific mortality of 0.59 (95% CI 0.35 to 1.01). Patients who increased their marine ω-3 PUFA intake by at least 0.15 g/day after diagnosis had an HR of 0.30 (95% CI 0.14 to 0.64, p for trend <0.001) for CRC deaths, compared with those who did not change or changed their intake by <0.02 g/day. No association was found between postdiagnostic marine ω-3 PUFA intake and all-cause mortality (p for trend=0.47). CONCLUSIONS High marine ω-3 PUFA intake after CRC diagnosis is associated with lower risk of CRC-specific mortality. Increasing consumption of marine ω-3 PUFAs after diagnosis may confer additional benefits to patients with CRC.
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Affiliation(s)
- Mingyang Song
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA,Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Xuehong Zhang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, and Harvard Medical School, Boston, MA
| | - Jeffrey A. Meyerhardt
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Edward L. Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, and Harvard Medical School, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Shuji Ogino
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women’s Hospital, and Harvard Medical School, Boston, MA
| | - Charles S. Fuchs
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, and Harvard Medical School, Boston, MA,Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Andrew T. Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA,Division of Gastroenterology, Massachusetts General Hospital, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, and Harvard Medical School, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA
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55
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Lee JY, Sim TB, Lee JE, Na HK. Chemopreventive and Chemotherapeutic Effects of Fish Oil derived Omega-3 Polyunsaturated Fatty Acids on Colon Carcinogenesis. Clin Nutr Res 2017; 6:147-160. [PMID: 28770178 PMCID: PMC5539209 DOI: 10.7762/cnr.2017.6.3.147] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer is the third most common cause of cancer related death in the world. Multiple lines of evidence suggest that there is an association between consumption of dietary fat and colon cancer risk. Not only the amount but also the type and the ratio of fatty acids comprising dietary fats consumed have been implicated in the etiology and pathogenesis of colon cancer. Omega-3 (n-3) polyunsaturated fatty acids (PUFAs), such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), have been known to inhibit development of colon cancer by downregulating the expression of genes involved in colon carcinogenesis and also by altering the membrane lipid composition. Data from laboratory, epidemiological, and clinical studies substantiate the beneficial role of n-3 PUFAs in preventing colitis and subsequent development of colon cancer. In addition, recent studies suggest that some n-3 PUFAs can be effective as an adjuvant with chemotherapeutic agents and other natural anticancer compounds in the management of colon cancer. In this review, we discuss chemopreventive and therapeutic effects of fish oil derived long chain n-3 PUFAs, particularly EPA and DHA, with focus on synergetic effects of which they exert when combined with chemotherapeutic agents and other natural compounds.
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Affiliation(s)
- Ja Young Lee
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea
| | - Tae-Bu Sim
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea
| | - Jeong-Eun Lee
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea
| | - Hye-Kyung Na
- Department of Food and Nutrition, College of Health and Wellness, Sungshin Women's University, Seoul 01133, Korea.,Department of Food Science and Biotechnology, College of Knowledge-Based Services Engineering, Sungshin Women's University, Seoul 01133, Korea
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56
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Oono K, Takahashi K, Sukehara S, Kurosawa H, Matsumura T, Taniguchi S, Ohta S. Inhibition of PC3 human prostate cancer cell proliferation, invasion and migration by eicosapentaenoic acid and docosahexaenoic acid. Mol Clin Oncol 2017; 7:217-220. [PMID: 28781788 DOI: 10.3892/mco.2017.1287] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 04/06/2017] [Indexed: 01/24/2023] Open
Abstract
The n-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), found in fish oil, exert a number of beneficial effects, and they are used in the treatment of hyperlipidemia. In recent years, EPA and DHA have been found to affect cancer cell proliferation. In the present study, PC3 cells, which are androgen-independent prostate cancer cells that resemble castration-resistant prostate cancer cells, were used to investigate a possible novel treatment for castration-resistant prostate cancer. The PC3 cells were cultured and incubated with various concentrations of EPA or DHA. Cancer proliferation was confirmed by trypan blue microscopy. Invasion and migration assays were used in the upper chamber in PC3 cells, and serum-free medium and various concentrations of EPA or DHA were placed in the lower chamber in serum-containing medium. EPA and DHA decreased PC3 cell proliferation, invasion and migration. The effect of EPA on PC3 cells was dose-dependent and significant differences were observed at concentrations of 100 and 200 µg/ml. The effect of DHA on PC3 cells was similar to that of EPA. In the migration assay, EPA exerted almost no effects at 25 µg/ml, but migration was reduced at 50 µg/ml. Similar to EPA, DHA exerted almost no effects at 25 µg/ml, but further reduction was observed at the 50 µg/ml concentration. In the invasion assay, EPA at 25 µg/ml was not significantly different from the control, but suppressed invasion at 50 µg/ml. DHA decreased invasion compared with the control at 25 µg/ml, whereas invasion was significantly reduced at a DHA concentration of 50 µg/ml. In conclusion, it was demonstrated that EPA and DHA were effective in decreasing the proliferation, invasion and migration of prostate PC3 cancer cells. However, the detailed underlying mechanisms have not yet been fully elucidated.
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Affiliation(s)
- Keiichi Oono
- Department of Clinical Pathology, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
| | - Katsuya Takahashi
- Department of Clinical Pathology, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
| | - Saeka Sukehara
- Department of Clinical Pathology, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
| | - Hirohito Kurosawa
- Department of Clinical Pathology, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
| | - Tomio Matsumura
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Department of Advanced Medicine for Health Promotion, Shinshu University, Matsumoto, Nagano 390-8621, Japan.,Department of Molecular Oncology, Graduate School of Medicine, Shinshu University, Matsumoto, Nagano 390-8621, Japan
| | - Shun'Ichiro Taniguchi
- Department of Comprehensive Cancer Therapy, School of Medicine, Shinshu University, Matsumoto, Nagano 390-8621, Japan
| | - Shoichiro Ohta
- Department of Clinical Pathology, Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
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57
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Alnabulsi A, Swan R, Cash B, Alnabulsi A, Murray GI. The differential expression of omega-3 and omega-6 fatty acid metabolising enzymes in colorectal cancer and its prognostic significance. Br J Cancer 2017; 116:1612-1620. [PMID: 28557975 PMCID: PMC5518862 DOI: 10.1038/bjc.2017.135] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 04/13/2017] [Accepted: 04/24/2017] [Indexed: 12/28/2022] Open
Abstract
Background: Colorectal cancer is a common malignancy and one of the leading causes of cancer-related deaths. The metabolism of omega fatty acids has been implicated in tumour growth and metastasis. Methods: This study has characterised the expression of omega fatty acid metabolising enzymes CYP4A11, CYP4F11, CYP4V2 and CYP4Z1 using monoclonal antibodies we have developed. Immunohistochemistry was performed on a tissue microarray containing 650 primary colorectal cancers, 285 lymph node metastasis and 50 normal colonic mucosa. Results: The differential expression of CYP4A11 and CYP4F11 showed a strong association with survival in both the whole patient cohort (hazard ratio (HR)=1.203, 95% CI=1.092–1.324, χ2=14.968, P=0.001) and in mismatch repair-proficient tumours (HR=1.276, 95% CI=1.095–1.488, χ2=9.988, P=0.007). Multivariate analysis revealed that the differential expression of CYP4A11 and CYP4F11 was independently prognostic in both the whole patient cohort (P=0.019) and in mismatch repair proficient tumours (P=0.046). Conclusions: A significant and independent association has been identified between overall survival and the differential expression of CYP4A11 and CYP4F11 in the whole patient cohort and in mismatch repair-proficient tumours.
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Affiliation(s)
- Abdo Alnabulsi
- Department of Pathology, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Foresterhill, Aberdeen AB25, 2ZD, UK.,Vertebrate Antibodies, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
| | - Rebecca Swan
- Department of Pathology, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Foresterhill, Aberdeen AB25, 2ZD, UK
| | - Beatriz Cash
- Vertebrate Antibodies, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
| | - Ayham Alnabulsi
- Vertebrate Antibodies, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
| | - Graeme I Murray
- Department of Pathology, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Foresterhill, Aberdeen AB25, 2ZD, UK
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58
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Kopecka J, Porto S, Lusa S, Gazzano E, Salzano G, Giordano A, Desiderio V, Ghigo D, Caraglia M, De Rosa G, Riganti C. Self-assembling nanoparticles encapsulating zoledronic acid revert multidrug resistance in cancer cells. Oncotarget 2016; 6:31461-78. [PMID: 26372812 PMCID: PMC4741618 DOI: 10.18632/oncotarget.5058] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 08/27/2015] [Indexed: 01/23/2023] Open
Abstract
The overexpression of ATP binding cassette (ABC) transporters makes tumor cells simultaneously resistant to several cytotoxic drugs. Impairing the energy metabolism of multidrug resistant (MDR) cells is a promising chemosensitizing strategy, but many metabolic modifiers are too toxic in vivo. We previously observed that the aminobisphosphonate zoledronic acid inhibits the activity of hypoxia inducible factor-1α (HIF-1α), a master regulator of cancer cell metabolism. Free zoledronic acid, however, reaches low intratumor concentration. We synthesized nanoparticle formulations of the aminobisphosphonate that allow a higher intratumor delivery of the drug. We investigated whether they are effective metabolic modifiers and chemosensitizing agents against human MDR cancer cells in vitro and in vivo. At not toxic dosage, nanoparticles carrying zoledronic acid chemosensitized MDR cells to a broad spectrum of cytotoxic drugs, independently of the type of ABC transporters expressed. The nanoparticles inhibited the isoprenoid synthesis and the Ras/ERK1/2-driven activation of HIF-1α, decreased the transcription and activity of glycolytic enzymes, the glucose flux through the glycolysis and tricarboxylic acid cycle, the electron flux through the mitochondrial respiratory chain, the synthesis of ATP. So doing, they lowered the ATP-dependent activity of ABC transporters, increasing the chemotherapy efficacy in vitro and in vivo. These effects were more pronounced in MDR cells than in chemosensitive ones and were due to the inhibition of farnesyl pyrophosphate synthase (FPPS), as demonstrated in FPPS-silenced tumors. Our work proposes nanoparticle formulations of zoledronic acid as the first not toxic metabolic modifiers, effective against MDR tumors.
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Affiliation(s)
- Joanna Kopecka
- Department of Oncology, University of Torino, Torino, Italy
| | - Stefania Porto
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Sara Lusa
- Department of Pharmacy, Federico II University of Naples, Naples, Italy
| | - Elena Gazzano
- Department of Oncology, University of Torino, Torino, Italy
| | - Giuseppina Salzano
- Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA, USA
| | - Antonio Giordano
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, USA.,Department of Medicine, Surgery and Neuroscience University of Siena, Siena, Italy
| | - Vincenzo Desiderio
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Dario Ghigo
- Department of Oncology, University of Torino, Torino, Italy
| | - Michele Caraglia
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, USA
| | - Giuseppe De Rosa
- Department of Pharmacy, Federico II University of Naples, Naples, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, Torino, Italy
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59
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Zhao H, Pflug BR, Lai X, Wang M. Pyruvate dehydrogenase alpha 1 as a target of omega-3 polyunsaturated fatty acids in human prostate cancer through a global phosphoproteomic analysis. Proteomics 2016; 16:2419-31. [PMID: 27357730 DOI: 10.1002/pmic.201600166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/23/2016] [Accepted: 06/27/2016] [Indexed: 01/26/2023]
Abstract
Prostate cancer is one of the leading cancers in men. Taking dietary supplements, such as fish oil (FO), which is rich in n-3 polyunsaturated fatty acids (PUFAs), has been employed as a strategy to lower prostate cancer risk and control disease progression. In this study, we investigated the global phosphoproteomic changes induced by FO using a combination of phosphoprotein-enrichment strategy and high-resolution tandem mass spectrometry. We found that FO induces many more phosphorylation changes than oleic acid when they both are compared to control group. Quantitative comparison between untreated group and FO- or oleic acid-treated groups uncovered a number of important protein phosphorylation changes induced by n-3PUFAs. This phosphoproteomic discovery study and the follow-up Western Blot validation study elucidate that phosphorylation levels of the two regulatory serine residues in pyruvate dehydrogenase alpha 1 (PDHA1), serine-232 and serine-300, are significantly decreased upon FO treatment. As expected, increased pyruvate dehydrogenase activity was also observed. This study suggests that FO-induced phosphorylation changes in PDHA1 is more likely related to the glucose metabolism pathway, and n-3 PUFAs may have a role in controlling the balance between lipid and glucose oxidation.
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Affiliation(s)
- Heng Zhao
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Beth R Pflug
- Department of Medicine, Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Xianyin Lai
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Cellular & Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Mu Wang
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA.
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60
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Docosahexaenoic Acid Induces Oxidative DNA Damage and Apoptosis, and Enhances the Chemosensitivity of Cancer Cells. Int J Mol Sci 2016; 17:ijms17081257. [PMID: 27527148 PMCID: PMC5000655 DOI: 10.3390/ijms17081257] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/16/2016] [Accepted: 07/27/2016] [Indexed: 12/11/2022] Open
Abstract
The human diet contains low amounts of ω-3 polyunsaturated fatty acids (PUFAs) and high amounts of ω-6 PUFAs, which has been reported to contribute to the incidence of cancer. Epidemiological studies have shown that a high consumption of fish oil or ω-3 PUFAs reduced the risk of colon, pancreatic, and endometrial cancers. The ω-3 PUFA, docosahexaenoic acid (DHA), shows anticancer activity by inducing apoptosis of some human cancer cells without toxicity against normal cells. DHA induces oxidative stress and oxidative DNA adduct formation by depleting intracellular glutathione (GSH) and decreasing the mitochondrial function of cancer cells. Oxidative DNA damage and DNA strand breaks activate DNA damage responses to repair the damaged DNA. However, excessive DNA damage beyond the capacity of the DNA repair processes may initiate apoptotic signaling pathways and cell cycle arrest in cancer cells. DHA shows a variable inhibitory effect on cancer cell growth depending on the cells’ molecular properties and degree of malignancy. It has been shown to affect DNA repair processes including DNA-dependent protein kinases and mismatch repair in cancer cells. Moreover, DHA enhanced the efficacy of anticancer drugs by increasing drug uptake and suppressing survival pathways in cancer cells. In this review, DHA-induced oxidative DNA damage, apoptotic signaling, and enhancement of chemosensitivity in cancer cells will be discussed based on recent studies.
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61
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Buondonno I, Gazzano E, Jean SR, Audrito V, Kopecka J, Fanelli M, Salaroglio IC, Costamagna C, Roato I, Mungo E, Hattinger CM, Deaglio S, Kelley SO, Serra M, Riganti C. Mitochondria-Targeted Doxorubicin: A New Therapeutic Strategy against Doxorubicin-Resistant Osteosarcoma. Mol Cancer Ther 2016; 15:2640-2652. [PMID: 27466354 DOI: 10.1158/1535-7163.mct-16-0048] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 06/23/2016] [Indexed: 11/16/2022]
Abstract
Doxorubicin is one of the leading drugs for osteosarcoma standard chemotherapy. A total of 40% to 45% of high-grade osteosarcoma patients are unresponsive, or only partially responsive, to doxorubicin (Dox), due to the overexpression of the drug efflux transporter ABCB1/P-glycoprotein (Pgp). The aim of this work is to improve Dox-based regimens in resistant osteosarcomas. We used a chemically modified mitochondria-targeted Dox (mtDox) against Pgp-overexpressing osteosarcomas with increased resistance to Dox. Unlike Dox, mtDox accumulated at significant levels intracellularly, exerted cytotoxic activity, and induced necrotic and immunogenic cell death in Dox-resistant/Pgp-overexpressing cells, fully reproducing the activities exerted by anthracyclines in drug-sensitive tumors. mtDox reduced tumor growth and cell proliferation, increased apoptosis, primed tumor cells for recognition by the host immune system, and was less cardiotoxic than Dox in preclinical models of drug-resistant osteosarcoma. The increase in Dox resistance was paralleled by a progressive upregulation of mitochondrial metabolism. By widely modulating the expression of mitochondria-related genes, mtDox decreased mitochondrial biogenesis, the import of proteins and metabolites within mitochondria, mitochondrial metabolism, and the synthesis of ATP. These events were paralleled by increased reactive oxygen species production, mitochondrial depolarization, and mitochondria-dependent apoptosis in resistant osteosarcoma cells, where Dox was completely ineffective. We propose mtDox as a new effective agent with a safer toxicity profile compared with Dox that may be effective for the treatment of Dox-resistant/Pgp-positive osteosarcoma patients, who strongly need alternative and innovative treatment strategies. Mol Cancer Ther; 15(11); 2640-52. ©2016 AACR.
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Affiliation(s)
| | - Elena Gazzano
- Department of Oncology, University of Torino, Torino, Italy
| | - Sae Rin Jean
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada.,Department of Chemistry, Faculty of Arts and Science, University of Toronto, Toronto, Ontario, Canada
| | - Valentina Audrito
- Human Genetics Foundation (HuGeF), Torino, Italy.,Department of Medical Sciences, University of Torino, Torino, Italy
| | - Joanna Kopecka
- Department of Oncology, University of Torino, Torino, Italy
| | - Marilù Fanelli
- Orthopaedic Rizzoli Institute, Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, Bologna, Italy
| | | | | | - Ilaria Roato
- Center for Research and Experimental Medicine (Ce.R.M.S.), San Giovanni Battista Hospital, Torino, Italy
| | - Eleonora Mungo
- Department of Oncology, University of Torino, Torino, Italy
| | - Claudia M Hattinger
- Orthopaedic Rizzoli Institute, Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, Bologna, Italy
| | - Silvia Deaglio
- Human Genetics Foundation (HuGeF), Torino, Italy.,Department of Medical Sciences, University of Torino, Torino, Italy
| | - Shana O Kelley
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada.,Department of Chemistry, Faculty of Arts and Science, University of Toronto, Toronto, Ontario, Canada
| | - Massimo Serra
- Orthopaedic Rizzoli Institute, Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, Bologna, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, Torino, Italy.
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62
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Badr El-Din NK, Ali DA, Alaa El-Dein M, Ghoneum M. Enhancing the Apoptotic Effect of a Low Dose of Paclitaxel on Tumor Cells in Mice by Arabinoxylan Rice Bran (MGN-3/Biobran). Nutr Cancer 2016; 68:1010-20. [PMID: 27367621 DOI: 10.1080/01635581.2016.1192204] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this study, we examine the ability of arabinoxylan rice bran (MGN-3/Biobran) to enhance the apoptotic effect of paclitaxel (Taxol) at low concentration [2 mg/kg body weight (BW)] in animals bearing Ehrlich ascites carcinoma (EAC) cells and elucidate its mechanisms of action. On Day 8 following tumor cells inoculation, mice bearing tumors were administered MGN-3 alone (40 mg/kg BW), paclitaxel alone, or MGN-3 plus paclitaxel. On Day 30 post-tumor inoculation, we observed significant suppression of tumor volume (TV) with paclitaxel alone (59%), MGN-3 alone (77%), and MGN-3 plus paclitaxel (88%). Inhibition of tumor growth post-treatment with both agents, as compared with either treatment alone, was associated with a decrease in cell proliferation, a marked increase in the sub-G0/G1 population, an increase in DNA damage and apoptosis of tumor cells, and a significant maximization of the apoptosis index (AI)/proliferation index (PrI) ratio. Histopathological and electron microscopy examination of the combined treatment group showed an increase in the degenerative regions of the solid tumor tissue and abundant apoptotic cells. These data suggest that MGN-3 supplementation enhances tumor cell demise in the presence of a low dose of chemotherapeutic agent via apoptotic mechanism.
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Affiliation(s)
- Nariman K Badr El-Din
- a Department of Zoology , Faculty of Science, University of Mansoura , Mansoura , Egypt
| | - Doaa A Ali
- a Department of Zoology , Faculty of Science, University of Mansoura , Mansoura , Egypt
| | - Mai Alaa El-Dein
- a Department of Zoology , Faculty of Science, University of Mansoura , Mansoura , Egypt
| | - Mamdooh Ghoneum
- b Department of Otolaryngology , Charles Drew University of Medicine and Science , Los Angeles , California , USA
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Kaur E, Sahu A, Hole AR, Rajendra J, Chaubal R, Gardi N, Dutt A, Moiyadi A, Krishna CM, Dutt S. Unique spectral markers discern recurrent Glioblastoma cells from heterogeneous parent population. Sci Rep 2016; 6:26538. [PMID: 27221528 PMCID: PMC4879554 DOI: 10.1038/srep26538] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 05/04/2016] [Indexed: 02/08/2023] Open
Abstract
An inability to discern resistant cells from bulk tumour cell population contributes to poor prognosis in Glioblastoma. Here, we compared parent and recurrent cells generated from patient derived primary cultures and cell lines to identify their unique molecular hallmarks. Although morphologically similar, parent and recurrent cells from different samples showed variable biological properties like proliferation and radiation resistance. However, total RNA-sequencing revealed transcriptional landscape unique to parent and recurrent populations. These data suggest that global molecular differences but not individual biological phenotype could differentiate parent and recurrent cells. We demonstrate that Raman Spectroscopy a label-free, non-invasive technique, yields global information about biochemical milieu of recurrent and parent cells thus, classifying them into distinct clusters based on Principal-Component-Analysis and Principal-Component-Linear-Discriminant-Analysis. Additionally, higher lipid related spectral peaks were observed in recurrent population. Importantly, Raman spectroscopic analysis could further classify an independent set of naïve primary glioblastoma tumour tissues into non-responder and responder groups. Interestingly, spectral features from the non-responder patient samples show a considerable overlap with the in-vitro generated recurrent cells suggesting their similar biological behaviour. This feasibility study necessitates analysis of a larger cohort of naïve primary glioblastoma samples to fully envisage clinical utility of Raman spectroscopy in predicting therapeutic response.
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Affiliation(s)
- Ekjot Kaur
- Shilpee Dutt Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Aditi Sahu
- Chilakapati Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Arti R. Hole
- Chilakapati Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Jacinth Rajendra
- Shilpee Dutt Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Rohan Chaubal
- Integrated Cancer Genomics Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Nilesh Gardi
- Integrated Cancer Genomics Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Amit Dutt
- Integrated Cancer Genomics Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Aliasgar Moiyadi
- Department of Neurosurgery, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - C. Murali Krishna
- Chilakapati Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
| | - Shilpee Dutt
- Shilpee Dutt Laboratory, Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Kharghar, Navi Mumbai 410210, India
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Abstract
Considerable debate exists regarding the potential antineoplastic effect of dietary long-chain n-3 PUFA contained in fatty fishes. Since the majority of published data has proven that their intake does not induce toxic or carcinogenic effects in humans, their possible preventive use against cancer has been suggested. On the other hand, it is unlikely that they could be effective in cancer patients as a single therapy. Nevertheless, a considerable effort has been put forth in recent years to evaluate the hypothesis that n-3 PUFA might improve the antineoplastic efficiency of currently used anticancer agents. The rationale for this therapeutic combinatory strategy is trying to increase cancer sensitivity to conventional therapies. This could allow the use of lower drug/radiation doses and, thereby, a reduction in the detrimental health effects associated with these treatments. We will here critically examine the studies that have investigated this possibility, by focusing particularly on the biological and molecular mechanisms underlying the antineoplastic effect of these combined treatments. A possible use of n-3 PUFA in combination with the innovative single-targeted anti-cancer therapies, that often are not completely devoid of dangerous side-effects, is also suggested.
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Subramanian N, Schumann-Gillett A, Mark AE, O'Mara ML. Understanding the accumulation of P-glycoprotein substrates within cells: The effect of cholesterol on membrane partitioning. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:776-82. [DOI: 10.1016/j.bbamem.2015.12.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 11/18/2015] [Accepted: 12/21/2015] [Indexed: 11/25/2022]
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Omega-3 Fatty Acids and Cancer Cell Cytotoxicity: Implications for Multi-Targeted Cancer Therapy. J Clin Med 2016; 5:jcm5020015. [PMID: 26821053 PMCID: PMC4773771 DOI: 10.3390/jcm5020015] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/15/2016] [Accepted: 01/19/2016] [Indexed: 12/24/2022] Open
Abstract
Cancer is a major disease worldwide. Despite progress in cancer therapy, conventional cytotoxic therapies lead to unsatisfactory long-term survival, mainly related to development of drug resistance by tumor cells and toxicity towards normal cells. n-3 polyunsaturated fatty acids (PUFAs), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), can exert anti-neoplastic activity by inducing apoptotic cell death in human cancer cells either alone or in combination with conventional therapies. Indeed, n-3 PUFAs potentially increase the sensitivity of tumor cells to conventional therapies, possibly improving their efficacy especially against cancers resistant to treatment. Moreover, in contrast to traditional therapies, n-3 PUFAs appear to cause selective cytotoxicity towards cancer cells with little or no toxicity on normal cells. This review focuses on studies investigating the cytotoxic activity of n-3 PUFAs against cancer cells via apoptosis, analyzing the molecular mechanisms underlying this effective and selective activity. Here, we highlight the multiple molecules potentially targeted by n-3 PUFAs to trigger cancer cell apoptosis. This analysis can allow a better comprehension of the potential cytotoxic therapeutic role of n-3 PUFAs against cancer, providing specific information and support to design future pre-clinical and clinical studies for a better use of n-3 PUFAs in cancer therapy, mainly combinational therapy.
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Kopecka J, Campia I, Jacobs A, Frei AP, Ghigo D, Wollscheid B, Riganti C. Carbonic anhydrase XII is a new therapeutic target to overcome chemoresistance in cancer cells. Oncotarget 2016; 6:6776-93. [PMID: 25686827 PMCID: PMC4466649 DOI: 10.18632/oncotarget.2882] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 12/09/2014] [Indexed: 12/13/2022] Open
Abstract
Multidrug resistance (MDR) in cancer cells is a challenging phenomenon often associated with P-glycoprotein (Pgp) surface expression. Finding new ways to bypass Pgp-mediated MDR still remains a daunting challenge towards the successful treatment of malignant neoplasms such as colorectal cancer. We applied the Cell Surface Capture technology to chemosensitive and chemoresistant human colon cancer to explore the cell surface proteome of Pgp-expressing cells in a discovery-driven fashion. Comparative quantitative analysis of identified cell surface glycoproteins revealed carbonic anhydrase type XII (CAXII) to be up-regulated on the surface of chemoresistant cells, similarly to Pgp. In cellular models showing an acquired MDR phenotype due to the selective pressure of chemotherapy, the progressive increase of the transcription factor hypoxia-inducible factor-1 alpha was paralleled by the simultaneous up-regulation of Pgp and CAXII. CAXII and Pgp physically interacted at the cell surface. CAXII silencing or pharmacological inhibition with acetazolamide decreased the ATPase activity of Pgp by altering the optimal pH at which Pgp operated and promoted chemosensitization to Pgp substrates in MDR cells. We propose CAXII as a new secondary marker of the MDR phenotype that influences Pgp activity directly and can be used as a pharmacological target for MDR research and potential treatment.
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Affiliation(s)
- Joanna Kopecka
- Department of Oncology, University of Torino, 10126 Torino, Italy
| | - Ivana Campia
- Department of Oncology, University of Torino, 10126 Torino, Italy
| | - Andrea Jacobs
- Department of Biology, Institute of Molecular Systems Biology, Swiss Federal Institute of Technology (ETH) Zurich, 8093 Zurich, Switzerland
| | - Andreas P Frei
- Department of Biology, Institute of Molecular Systems Biology, Swiss Federal Institute of Technology (ETH) Zurich, 8093 Zurich, Switzerland.,Biomedical Proteomics Platform (BMPP), Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH) Zurich, 8093 Zurich, Switzerland
| | - Dario Ghigo
- Department of Oncology, University of Torino, 10126 Torino, Italy
| | - Bernd Wollscheid
- Department of Biology, Institute of Molecular Systems Biology, Swiss Federal Institute of Technology (ETH) Zurich, 8093 Zurich, Switzerland.,Biomedical Proteomics Platform (BMPP), Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH) Zurich, 8093 Zurich, Switzerland
| | - Chiara Riganti
- Department of Oncology, University of Torino, 10126 Torino, Italy
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68
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Salaroglio IC, Campia I, Kopecka J, Gazzano E, Orecchia S, Ghigo D, Riganti C. Zoledronic acid overcomes chemoresistance and immunosuppression of malignant mesothelioma. Oncotarget 2015; 6:1128-42. [PMID: 25544757 PMCID: PMC4359222 DOI: 10.18632/oncotarget.2731] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 11/11/2014] [Indexed: 11/25/2022] Open
Abstract
The human malignant mesothelioma (HMM) is characterized by a chemoresistant and immunosuppressive phenotype. An effective strategy to restore chemosensitivity and immune reactivity against HMM is lacking. We investigated whether the use of zoledronic acid is an effective chemo-immunosensitizing strategy. We compared primary HMM samples with non-transformed mesothelial cells. HMM cells had higher rate of cholesterol and isoprenoid synthesis, constitutive activation of Ras/extracellular signal-regulated kinase1/2 (ERK1/2)/hypoxia inducible factor-1α (HIF-1α) pathway and up-regulation of the drug efflux transporter P-glycoprotein (Pgp). By decreasing the isoprenoid supply, zoledronic acid down-regulated the Ras/ERK1/2/HIF-1α/Pgp axis and chemosensitized the HMM cells to Pgp substrates. The HMM cells also produced higher amounts of kynurenine, decreased the proliferation of T-lymphocytes and expanded the number of T-regulatory (Treg) cells. Kynurenine synthesis was due to the transcription of the indoleamine 1,2 dioxygenase (IDO) enzyme, consequent to the activation of the signal transducer and activator of transcription-3 (STAT3). By reducing the activity of the Ras/ERK1/2/STAT3/IDO axis, zoledronic acid lowered the kyurenine synthesis and the expansion of Treg cells, and increased the proliferation of T-lymphocytes. Thanks to its ability to decrease Ras/ERK1/2 activity, which is responsible for both Pgp-mediated chemoresistance and IDO-mediated immunosuppression, zoledronic acid is an effective chemo-immunosensitizing agent in HMM cells.
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Affiliation(s)
| | - Ivana Campia
- Department of Oncology, University of Torino, Italy
| | | | | | - Sara Orecchia
- S.C. Anatomia Patologica, Azienda Ospedaliera S.S. Antonio e Biagio, Alessandria, Italy
| | - Dario Ghigo
- Department of Oncology, University of Torino, Italy
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Predictive value of blood lipid association with response to neoadjuvant chemoradiotherapy in colorectal cancer. Tumour Biol 2015; 37:4955-61. [PMID: 26531721 DOI: 10.1007/s13277-015-4320-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 10/26/2015] [Indexed: 12/11/2022] Open
Abstract
The aim of this research was to explore whether blood lipid parameters could predict tumor regression grading (TRG) and compare with the predictive value of carcinoembryonic antigen (CEA) in patients with locally advanced colorectal cancer (LARC) treated with neoadjuvant chemoradiotherapy (nCRT). Between June 2011 and January 2015, the records of 176 patients with primary colorectal adenocarcinoma treated with nCRT followed by radical surgery were reviewed retrospectively. Total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and pre-CEA were measured before nCRT, and post-CEA was measured before surgery. A total of 129 (73.3 %) good responders (TRG 3-4) and 47 (26.7 %) poor responders (TRG 0-2) were assessed after the nCRT. TC, LDL, HDL, and ΔCEA were 6.56 ± 0.95, 3.08 ± 0.72, and 1.43 ± 0.25 mmol/L and -0.69 ± 8.33 μg/mL in poor responders compared with 5.15 ± 1.29, 2.39 ± 0.5, and 1.37 ± 0.32 mmol/L and 16.67 ± 30.18 μg/mL in good responders, respectively (p < 0.05). TG, pre-CEA, and post-CEA were not significantly different. Multivariate logistic regression analysis revealed TC and ΔCEA as independent factors in predicting TRG; TC showed a sensitivity of 62.79 %, a specificity of 91.49 %, a Youden index of 0.543, a cutoff value of 5.52, and an AUC of 0.800 compared with ΔCEA (sensitivity 76.74 %, specificity 65.96 %, Youden index 0.427, and AUC 0.761). TC has a better predictive value than ΔCEA and hence might serve as a predictor of TRG in LARC patients.
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Bahety P, Van Nguyen TH, Hong Y, Zhang L, Chan ECY, Ee PLR. Understanding the cholesterol metabolism-perturbing effects of docosahexaenoic acid by gas chromatography-mass spectrometry targeted metabonomic profiling. Eur J Nutr 2015; 56:29-43. [PMID: 26428672 DOI: 10.1007/s00394-015-1053-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 09/17/2015] [Indexed: 01/13/2023]
Abstract
PURPOSE Over the past few decades, docosahexaenoic acid (DHA) has gained special attention for management of cholesterol-associated metabolic disorders and neurodegenerative diseases such as Alzheimer's disease (AD) owing to its neuroprotective, anti-inflammatory and hypolipidemic properties. Several epidemiological studies have reported the effect of DHA in reducing the risk of developing AD by lowering cholesterol. Hypercholesterolemia is a pro-amyloidogenic factor influencing the enzymatic processing of amyloid-β precursor protein (AβPP) to toxic β-amyloid. However, the mechanism by which DHA modulates the cholesterol pathway has not been established. Thus, the objective of this study was to investigate the mechanism of regulation of cholesterol metabolism by DHA in an AβPP695 overexpressing AD cell model. METHODS A gas chromatography/mass spectrometry method was developed and validated for the targeted profiling of 11 cholesterol metabolites in DHA-treated Chinese hamster ovary wild-type (CHO-wt) and AβPP695 overexpressing (CHO-AβPP695) cells. The differential metabolite profiles between DHA- and vehicle-treated groups were further analyzed using fold change values of the ratio of concentration of metabolites in CHO-AβPP695 to CHO-wt cells. Effect of DHA on key rate-limiting enzymatic activities within the cholesterol pathway was established using biochemical assays. RESULTS Our results showed that DHA reduced the levels of key cholesterol anabolites and catabolites in CHO-AβPP695 cells as compared to CHO-wt cells. Further enzymatic studies revealed that the cholesterol-lowering effect of DHA was mediated by regulating HMG-CoA reductase and squalene epoxidase enzyme activities. CONCLUSION We demonstrate for the first time the dual effects of DHA in inhibiting HMG-CoA reductase and squalene epoxidase and modulating the sterol biosynthesis axis of the cholesterol pathway in AβPP695 overexpressing AD. Our novel findings underscore the potential of DHA as a multi-target hypocholesterolemic agent for the prophylaxis of AD and other cholesterol-associated diseases.
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Affiliation(s)
- Priti Bahety
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Republic of Singapore
| | - Thi Hai Van Nguyen
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Republic of Singapore
| | - Yanjun Hong
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Republic of Singapore
| | - Luqi Zhang
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Republic of Singapore
| | - Eric Chun Yong Chan
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Republic of Singapore.
| | - Pui Lai Rachel Ee
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Republic of Singapore.
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Rosenblat M, Volkova N, Aviram M. Selective oxidative stress and cholesterol metabolism in lipid-metabolizing cell classes: Distinct regulatory roles for pro-oxidants and antioxidants. Biofactors 2015; 41:273-88. [PMID: 26228307 DOI: 10.1002/biof.1223] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 06/21/2015] [Indexed: 12/13/2022]
Abstract
Atherogenesis is associated with macrophage cholesterol and oxidized lipids accumulation and foam cell formation. However, two other major lipid-metabolizing cell classes, namely intestinal and liver cells, are also associated with atherogenesis. This study demonstrates that manipulations of cellular oxidative stress (by fatty acids, glucose, low-density lipoprotein, angiotensin II, polyphenolic antioxidants, or the glutathione/paraoxonase 1 systems) have some similar, but also some different effects on cholesterol metabolism in macrophages (J774A.1) versus intestinal cells (HT-29) versus liver cells (HuH7). Cellular oxidative stress was ≈3.5-folds higher in both intestinal and liver cells versus macrophages. In intestinal cells or liver cells versus macrophages, the cholesterol biosynthesis rate was increased by 9- or 15-fold, respectively. In both macrophages and intestinal cells C-18:1 and C-18:2 but not C-18:0, fatty acids significantly increased oxidative stress, whereas in liver cells oxidative stress was significantly decreased by all three fatty acids. In liver cells, trans C-18:1 versus cis C-18:1, unlike intestinal cells or macrophages, significantly increased cellular oxidative stress and cellular cholesterol biosynthesis rate. Pomegranate juice (PJ), red wine, or their phenolics gallic acids or quercetin significantly reduced cellular oxidation mostly in macrophages. Recombinant PON1 significantly decreased macrophage (but not the other cells) oxidative stress by ≈30%. We conclude that cellular atherogenesis research should look at atherogenicity, not only in macrophages but also in intestinal and liver cells, to advance our understanding of the complicated mechanisms behind atherogenesis. © 2015 BioFactors, 41(4):273-288, 2015.
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Affiliation(s)
- Mira Rosenblat
- The Lipid Research Laboratory, Technion Rappaport Faculty of Medicine, Haifa, Israel
| | - Nina Volkova
- The Lipid Research Laboratory, Technion Rappaport Faculty of Medicine, Haifa, Israel
| | - Michael Aviram
- The Lipid Research Laboratory, Technion Rappaport Faculty of Medicine, Haifa, Israel
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An Autocrine Cytokine/JAK/STAT-Signaling Induces Kynurenine Synthesis in Multidrug Resistant Human Cancer Cells. PLoS One 2015; 10:e0126159. [PMID: 25955018 PMCID: PMC4425697 DOI: 10.1371/journal.pone.0126159] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/29/2015] [Indexed: 12/01/2022] Open
Abstract
Background Multidrug resistant cancer cells are hard to eradicate for the inefficacy of conventional anticancer drugs. Besides escaping the cytotoxic effects of chemotherapy, they also bypass the pro-immunogenic effects induced by anticancer drugs: indeed they are not well recognized by host dendritic cells and do not elicit a durable anti-tumor immunity. It has not yet been investigated whether multidrug resistant cells have a different ability to induce immunosuppression than chemosensitive ones. We addressed this issue in human and murine chemosensitive and multidrug resistant cancer cells. Results We found that the activity and expression of indoleamine 2,3-dioxygenase 1 (IDO1), which catalyzes the conversion of tryptophan into the immunosuppressive metabolite kynurenine, was higher in all the multidrug resistant cells analyzed and that IDO1 inhibition reduced the growth of drug-resistant tumors in immunocompetent animals. In chemoresistant cells the basal activity of JAK1/STAT1 and JAK1/STAT3 signaling was higher, the STAT3 inhibitor PIAS3 was down-regulated, and the autocrine production of STAT3-target and IDO1-inducers cytokines IL-6, IL-4, IL-1β, IL-13, TNF-α and CD40L, was increased. The disruption of the JAK/STAT signaling lowered the IDO1 activity and reversed the kynurenine-induced pro-immunosuppressive effects, as revealed by the restored proliferation of T-lymphocytes in STAT-silenced chemoresistant cells. Conclusions Our work shows that multidrug resistant cells have a stronger immunosuppressive attitude than chemosensitive cells, due to the constitutive activation of the JAK/STAT/IDO1 axis, thus resulting chemo- and immune-evasive. Disrupting this axis may significantly improve the efficacy of chemo-immunotherapy protocols against resistant tumors.
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Li S, Qin J, Tian C, Cao J, Fida G, Wang Z, Chen H, Qian Z, Chen WR, Gu Y. The targeting mechanism of DHA ligand and its conjugate with Gemcitabine for the enhanced tumor therapy. Oncotarget 2015; 5:3622-35. [PMID: 25004114 PMCID: PMC4116508 DOI: 10.18632/oncotarget.1969] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Docosahexaenoic acid (DHA), an omega-3 C22 natural fatty acid serving as a precursor for metabolic and biochemical pathways, was reported as a targeting ligand of anticancer drugs. However, its tumor targeting ability and mechanism has not been claimed. Here we hypothesized that the uptake of DHA by tumor cells is related to the phosphatidylethanolamine (PE) contents in cell membranes. Thus, in this manuscript, the tumor-targeting ability of DHA was initially demonstrated in vitro and in vivo on different tumor cell lines by labeling DHA with fluorescence dyes. Subsequently, the tumor targeting ability was then correlated with the contents of PE in cell membranes to study the uptake mechanism. Further, DHA was conjugated with anticancer drug gemcitabine (DHA-GEM) for targeted tumor therapy. Our results demonstrated that DHA exhibited high tumor targeting ability and PE is the main mediator, which confirmed our hypothesis. The DHA-GEM displayed enhanced therapeutic efficacy than that of GEM itself, indicating that DHA is a promising ligand for tumor targeted therapy.
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Affiliation(s)
- Siwen Li
- Department of Biomedical Engineering, State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University
| | | | | | | | | | | | | | | | | | - Yueqing Gu
- Department of Biomedical Engineering, State Key Laboratory of Natural Medicines, School of Life Science and Technology, China Pharmaceutical University
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Pondugula SR, Ferniany G, Ashraf F, Abbott KL, Smith BF, Coleman ES, Mansour M, Bird RC, Smith AN, Karthikeyan C, Trivedi P, Tiwari AK. Stearidonic acid, a plant-based dietary fatty acid, enhances the chemosensitivity of canine lymphoid tumor cells. Biochem Biophys Res Commun 2015; 460:1002-7. [PMID: 25847597 DOI: 10.1016/j.bbrc.2015.03.141] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 03/24/2015] [Indexed: 01/26/2023]
Abstract
Lymphoma is the most common hematopoietic tumor in dogs and humans, with similar pathogenesis and therapeutic responses. Anticancer drugs like vincristine (VCR) and doxorubicin (DOX) are often used in treating lymphoma. However, the cure rate is generally poor due to chemoresistance. Here, we sought to determine whether stearidonic acid (SDA), a plant-based dietary fatty acid, sensitizes chemoresistant canine lymphoid-tumor cells. GL-1 B-cell lymphoid-tumor cells were found to be highly sensitive to the antitumor-activity of VCR and DOX, while OSW T-cell and 17-71 B-cell lymphoid-tumor cells were moderately and fully resistant, respectively. SDA, at its non-toxic concentrations, significantly promoted the antitumor action of VCR and DOX in both OSW and 17-71 cells. SDA-mediated chemosensitization was associated with SDA inhibition of P-glycoprotein (P-gp) function. This was confirmed in HEK293 cells stably expressing P-gp as well as by increased binding-affinity of SDA to P-gp in P-gp docking analysis. SDA at its chemosensitizing concentrations did not affect the viability of healthy dog peripheral blood mononuclear cells, suggesting that SDA is non-toxic to normal dog peripheral blood leucocytes at its chemosensitizing concentrations. Our study identifies a novel dietary fatty acid that may be used as a dietary supplement in combination with chemotherapy to promote the antitumor efficacy of the chemotherapy drugs in dogs and possibly in humans with chemoresistant lymphoma.
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Affiliation(s)
- Satyanarayana R Pondugula
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA.
| | - Glennie Ferniany
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA
| | - Farah Ashraf
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA
| | - Kodye L Abbott
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Bruce F Smith
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA; Scott-Ritchey Research Center, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Elaine S Coleman
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA
| | - Mahmoud Mansour
- Department of Anatomy, Physiology and Pharmacology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - R Curtis Bird
- Department of Pathobiology, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Annette N Smith
- Department of Clinical Sciences, Auburn University, Auburn, AL 36849, USA; Auburn University Research Initiative in Cancer, Auburn University, Auburn, AL 36849, USA
| | - Chandrabose Karthikeyan
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, MP 462033, India
| | - Piyush Trivedi
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, MP 462033, India
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, The University of Toledo, Toledo, OH 43614, USA
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Zhang Y, Qu X, Teng Y, Li Z, Xu L, Liu J, Ma Y, Fan Y, Li C, Liu S, Wang Z, Hu X, Zhang J, Liu Y. Cbl-b inhibits P-gp transporter function by preventing its translocation into caveolae in multiple drug-resistant gastric and breast cancers. Oncotarget 2015; 6:6737-48. [PMID: 25788263 PMCID: PMC4466646 DOI: 10.18632/oncotarget.3253] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 01/29/2015] [Indexed: 12/25/2022] Open
Abstract
The transport function of P-glycoprotein (P-gp) requires its efficient localization to caveolae, a subset of lipid rafts, and disruption of caveolae suppresses P-gp transport function. However, the regulatory molecules involved in the translocation of P-gp into caveolae remain unknown. In the present study, we showed that c-Src dependent Caveolin-1 phosphorylation promoted the translocation of P-gp into caveolae, resulting in multidrug resistance in adriamycin resistant gastric cancer SGC7901/Adr and breast cancer MCF-7/Adr cells. In a negative feedback loop, the translocation of Cbl-b from the nucleus to the cytoplasm prevented the localization of P-gp to caveolae resulting in the reversal of MDR through the ubiquitination and degradation of c-Src. Clinical data showed a significant positive relationship between Cbl-b expression and survival in P-gp positive breast cancer patients who received anthracycline-based chemotherapy. Our findings identified a new regulatory mechanism of P-gp transport function in multiple drug-resistant gastric and breast cancers.
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Affiliation(s)
- Ye Zhang
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Xiujuan Qu
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Yuee Teng
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Zhi Li
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Ling Xu
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Jing Liu
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Yanju Ma
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Yibo Fan
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Ce Li
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Shizhou Liu
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Zhenning Wang
- 2 Department of Surgical Oncology and General Surgery, the First Hospital of China Medical University, Shenyang 110001, China
| | - Xuejun Hu
- 3 Department of Medical Respiratory, the First Hospital of China Medical University, Shenyang 110001, China
| | - Jingdong Zhang
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
| | - Yunpeng Liu
- 1 Department of Medical Oncology, the First Hospital of China Medical University, Shenyang 110001, China
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76
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Chapkin RS, DeClercq V, Kim E, Fuentes NR, Fan YY. Mechanisms by Which Pleiotropic Amphiphilic n-3 PUFA Reduce Colon Cancer Risk. CURRENT COLORECTAL CANCER REPORTS 2014; 10:442-452. [PMID: 25400530 DOI: 10.1007/s11888-014-0241-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Colorectal cancer is one of the major causes of cancer-related mortality in both men and women worldwide. Genetic susceptibility and diet are primary determinants of cancer risk and tumor behavior. Experimental, epidemiological, and clinical data substantiate the beneficial role of n-3 polyunsaturated fatty acids (PUFA) in preventing chronic inflammation and colon cancer. From a mechanistic perspective, n-3 PUFA are pleiotropic and multifaceted with respect to their molecular mechanisms of action. For example, this class of dietary lipid uniquely alters membrane structure/ cytoskeletal function, impacting membrane receptor function and downstream signaling cascades, including gene expression profiles and cell phenotype. In addition, n-3 PUFA can synergize with other potential anti-tumor agents, such as fermentable fiber and curcumin. With the rising prevalence of diet-induced obesity, there is also an urgent need to elucidate the link between chronic inflammation in adipose tissue and colon cancer risk in obesity. In this review, we will summarize recent developments linking n-3 PUFA intake, membrane alterations, epigenetic modulation, and effects on obesity-associated colon cancer risk.
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Affiliation(s)
- Robert S Chapkin
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX 77843, USA. Center for Translational Environmental Health Research, Texas A&M University, College Station, TX 77843, USA. Department of Nutrition and Food Science, Texas A&M University, College Station, TX 77843, USA. Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA. Faculty of Toxicity, Texas A&M University, College Station, TX 77843, USA
| | - Vanessa DeClercq
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX 77843, USA. Department of Nutrition and Food Science, Texas A&M University, College Station, TX 77843, USA
| | - Eunjoo Kim
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX 77843, USA. Molecular & Cellular Medicine, Texas A&M University, College Station, TX 77843, USA
| | - Natividad Roberto Fuentes
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX 77843, USA. Faculty of Toxicity, Texas A&M University, College Station, TX 77843, USA
| | - Yang-Yi Fan
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX 77843, USA. Department of Nutrition and Food Science, Texas A&M University, College Station, TX 77843, USA
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77
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Mandal CC, Rahman MM. Targeting Intracellular Cholesterol is a Novel Therapeutic Strategy for Cancer Treatment. ACTA ACUST UNITED AC 2014; 6:510-513. [PMID: 25821564 PMCID: PMC4376010 DOI: 10.4172/1948-5956.1000316] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Substantial data from cell culture and animal studies evidence the preventive effect of statins, cholesterol lowering-drugs, in regulation of cancer cell proliferation and metastasis. Various clinical studies also support this correlation between use of statin and the reduction of cancer incidence. However, in some cases, statins have failed to decrease the risk of cancer. Since, instead of serum cholesterol, intracellular cholesterol may play a crucial role in the regulation of tumorigenesis and metastasis. The mechanism by which cholesterol is stored within cancer cells may differ among cancer types and also in different individuals. This paper discusses the molecular detail to speculate the statin-sensitive cancer. It also highlights that statins may work better as anticancer therapy if it is used with the combination of a specific microRNA (miR).
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Affiliation(s)
- Chandi C Mandal
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Rajasthan-305817, India
| | - Md Mizanur Rahman
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas-78229, USA
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