1
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The Modulatory Effects of Fatty Acids on Cancer Progression. Biomedicines 2023; 11:biomedicines11020280. [PMID: 36830818 PMCID: PMC9953116 DOI: 10.3390/biomedicines11020280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Cancer is the second leading cause of death worldwide and the global cancer burden rises rapidly. The risk factors for cancer development can often be attributed to lifestyle factors, of which an unhealthy diet is a major contributor. Dietary fat is an important macronutrient and therefore a crucial part of a well-balanced and healthy diet, but it is still unclear which specific fatty acids contribute to a healthy and well-balanced diet in the context of cancer risk and prognosis. In this review, we describe epidemiological evidence on the associations between the intake of different classes of fatty acids and the risk of developing cancer, and we provide preclinical evidence on how specific fatty acids can act on tumor cells, thereby modulating tumor progression and metastasis. Moreover, the pro- and anti-inflammatory effects of each of the different groups of fatty acids will be discussed specifically in the context of inflammation-induced cancer progression and we will highlight challenges as well as opportunities for successful application of fatty acid tailored nutritional interventions in the clinic.
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2
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Yerlikaya S, Djamgoz MB. Oleamide, a Sleep-Inducing Compound: Effects on Ion Channels and Cancer. Bioelectricity 2022. [DOI: 10.1089/bioe.2022.0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Serife Yerlikaya
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Mustafa B.A. Djamgoz
- Department of Life Sciences, Imperial College London, London, United Kingdom
- Biotechnology Research Center, Cyprus International University, Haspolat, Nicosia, TRNC, Mersin 10, Turkey
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3
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Morya S, Menaa F, Jiménez-López C, Lourenço-Lopes C, BinMowyna MN, Alqahtani A. Nutraceutical and Pharmaceutical Behavior of Bioactive Compounds of Miracle Oilseeds: An Overview. Foods 2022; 11:foods11131824. [PMID: 35804639 PMCID: PMC9265468 DOI: 10.3390/foods11131824] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 02/01/2023] Open
Abstract
India plays an important role in the production of oilseeds, which are mainly cultivated for future extraction of their oil. In addition to the energic and nutritional contribution of these seeds, oilseeds are rich sources of bioactive compounds (e.g., phenolic compounds, proteins, minerals). A regular and moderate dietary supplementation of oilseeds promotes health, prevents the appearance of certain diseases (e.g., cardiovascular diseases (CVDs), cancers) and delays the aging process. Due to their relevant content in nutraceutical molecules, oilseeds and some of their associated processing wastes have raised interest in food and pharmaceutical industries searching for innovative products whose application provides health benefits to consumers. Furthermore, a circular economy approach could be considered regarding the re-use of oilseeds’ processing waste. The present article highlights the different oilseed types, the oilseeds-derived bioactive compounds as well as the health benefits associated with their consumption. In addition, the different types of extractive techniques that can be used to obtain vegetable oils rich from oilseeds, such as microwave-assisted extraction (MAE), ultrasonic-assisted extraction (UAE) and supercritical fluid extraction (SFE), are reported. We conclude that the development and improvement of oilseed markets and their byproducts could offer even more health benefits in the future, when added to other foods.
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Affiliation(s)
- Sonia Morya
- Department of Food Technology & Nutrition, School of Agriculture, Lovely Professional University (LPU), Punjab 144001, India
- Correspondence: (S.M.); (F.M.)
| | - Farid Menaa
- Department of Internal Medicine and Nanomedicine, California Innovations Corporation (Fluorotronics-CIC), San Diego 92037, CA, USA
- Correspondence: (S.M.); (F.M.)
| | | | - Catarina Lourenço-Lopes
- Nutrition and Bromatology Group, Analytical and Food Chemistry Department, Faculty of Food Science and Technology, University of Vigo, Vigo 36310, Spain;
| | | | - Ali Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia;
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4
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Hu SH, He XD, Nie J, Hou JL, Wu J, Liu XY, Wei Y, Tang HR, Sun WX, Zhou SX, Yuan YY, An YP, Yan GQ, Lin Y, Lin PC, Zhao JJ, Ye ML, Zhao JY, Xu W, Zhao SM. Methylene-bridge tryptophan fatty acylation regulates PI3K-AKT signaling and glucose uptake. Cell Rep 2022; 38:110509. [PMID: 35294873 DOI: 10.1016/j.celrep.2022.110509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 09/15/2021] [Accepted: 02/16/2022] [Indexed: 12/01/2022] Open
Abstract
Protein fatty acylation regulates numerous cell signaling pathways. Polyunsaturated fatty acids (PUFAs) exert a plethora of physiological effects, including cell signaling regulation, with underlying mechanisms to be fully understood. Herein, we report that docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) regulate PI3K-AKT signaling by modifying PDK1 and AKT2. DHA-administered mice exhibit altered phosphorylation of proteins in signaling pathways. Methylene bridge-containing DHA/EPA acylate δ1 carbon of tryptophan 448/543 in PDK1 and tryptophan 414 in AKT2 via free radical pathway, recruit both the proteins to the cytoplasmic membrane, and activate PI3K signaling and glucose uptake in a tryptophan acylation-dependent but insulin-independent manner in cultured cells and in mice. DHA/EPA deplete cytosolic PDK1 and AKT2 and induce insulin resistance. Akt2 knockout in mice abrogates DHA/EPA-induced PI3K-AKT signaling. Our results identify PUFA's methylene bridge tryptophan acylation, a protein fatty acylation that regulates cell signaling and may underlie multifaceted effects of methylene-bridge-containing PUFAs.
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Affiliation(s)
- Song-Hua Hu
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Xia-Di He
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Ji Nie
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Jun-Li Hou
- Department of Chemistry, Fudan University, Shanghai 200438, P.R. China
| | - Jiang Wu
- Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, P. R. China
| | - Xiao-Yan Liu
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China
| | - Yun Wei
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Hui-Ru Tang
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China
| | - Wen-Xing Sun
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Shu-Xian Zhou
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Yi-Yuan Yuan
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Yan-Peng An
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China
| | - Guo-Quan Yan
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China
| | - Yan Lin
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China
| | - Peng-Cheng Lin
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai University for Nationalities, Xining 810007, P. R. China
| | - Jean J Zhao
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA; Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Ming-Liang Ye
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian 116023, China.
| | - Jian-Yuan Zhao
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China.
| | - Wei Xu
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China.
| | - Shi-Min Zhao
- Obstetrics & Gynecology Hospital of Fudan University, Institutes of Metabolism and Integrative Biology, State Key Laboratory of Genetic Engineering, School of Life Sciences and Institutes of Biomedical Sciences, Shanghai 200438, P.R. China; NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Medical Epigenetics, and Children's Hospital of Fudan University, Shanghai 200438, P.R. China; Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, College of Pharmacy, Qinghai University for Nationalities, Xining 810007, P. R. China.
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5
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Seo J, Yun J, Fukuda J, Chun YS. Tumor-intrinsic FABP5 is a novel driver for colon cancer cell growth via the HIF-1 signaling pathway. Cancer Genet 2021; 258-259:151-156. [PMID: 34775260 DOI: 10.1016/j.cancergen.2021.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 10/14/2021] [Accepted: 11/02/2021] [Indexed: 12/13/2022]
Abstract
Dysfunctional lipid metabolism is a known cause of cancer development and progression, yet little is known about the underlying molecular mechanisms that contribute to cancer progression. In this study, we demonstrate that fatty acid binding protein 5 (FABP5) is elevated in colon cancer tissue and this increased expression is linked to upregulation of the hypoxia-inducible factor-1 (HIF-1) signaling pathway. Under physiologically in vivo mimicked conditions via a polydimethylsiloxane (PDMS)-based three-dimensional (3D) culture chip, FABP5-knockdown colon cancer cells exhibited attenuated cell growth throughout the culture period. FABP5 was found to regulate HIF-1α protein levels and gene expression levels within the HIF-1α signaling pathway under hypoxic conditions. Our results provide evidence that supports the use of FABP5 as a prognostic factor in colon cancer. The FABP5/HIF-1α axis is a promising target for ameliorating fatty acid-triggered cancer progression.
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Affiliation(s)
- Jieun Seo
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, South Korea; Department of Physiology, Seoul National University College of Medicine, Seoul 03080, South Korea; Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - JeongEun Yun
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, South Korea; Department of Physiology, Seoul National University College of Medicine, Seoul 03080, South Korea
| | - Junji Fukuda
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Yang-Sook Chun
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, South Korea; Department of Physiology, Seoul National University College of Medicine, Seoul 03080, South Korea; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 03080, South Korea.
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6
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Nam M, Seo SS, Jung S, Jang SY, Lee J, Kwon M, Khan I, Ryu DH, Kim MK, Hwang GS. Comparable Plasma Lipid Changes in Patients with High-Grade Cervical Intraepithelial Neoplasia and Patients with Cervical Cancer. J Proteome Res 2020; 20:740-750. [PMID: 33241689 DOI: 10.1021/acs.jproteome.0c00640] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cervical cancer is the fourth most prevalent cancer among women worldwide and usually develops from cervical intraepithelial neoplasia (CIN). In the present study, we compared alterations in lipids associated with high-grade CIN and cervical cancer with those associated with a normal status and low-grade CIN by performing global lipid profiling on plasma (66 healthy controls and 55 patients with CIN1, 44 with CIN2/3, and 60 with cervical cancer) using ultraperformance liquid chromatography/quadrupole time-of-flight mass spectrometry. We identified 246 lipids and found 31 lipids with similar alterations in both high-grade CIN and cervical cancer. Among these 31 lipids, four lipid classes (phosphatidylcholine, phosphatidylethanolamine, diglyceride, and free fatty acids) were identified as the major lipid classes with significant differences in the patients with CIN2/3 and cervical cancer compared to the healthy controls and the patients with CIN1. Lipid metabolites belonging to the same classes were positively correlated with each other. High-grade CIN and cervical cancer induce comparable changes in lipid levels, which are closely related to the development of cervical tumors. These results suggest that lipid profiling is a useful method for monitoring progression to cervical cancer.
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Affiliation(s)
- Miso Nam
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea
| | - Sang-Soo Seo
- Center for Uterine Cancer, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea
| | - Sunhee Jung
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea.,Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Seo Young Jang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea.,Department of Chemistry and Nano Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Jueun Lee
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea
| | - Minji Kwon
- Division of Cancer Epidemiology and Prevention, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea
| | - Imran Khan
- Division of Cancer Epidemiology and Prevention, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea.,Department of Food Science and Technology, The University of Haripur, Haripur 22620, Pakistan
| | - Do Hyun Ryu
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Mi Kyung Kim
- Division of Cancer Epidemiology and Prevention, National Cancer Center, Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10408, Korea
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea.,Department of Chemistry and Nano Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
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7
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Phospholipid profiling enables to discriminate tumor- and non-tumor-derived human colon epithelial cells: Phospholipidome similarities and differences in colon cancer cell lines and in patient-derived cell samples. PLoS One 2020; 15:e0228010. [PMID: 31999740 PMCID: PMC6992008 DOI: 10.1371/journal.pone.0228010] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 01/05/2020] [Indexed: 01/10/2023] Open
Abstract
Identification of changes of phospholipid (PL) composition occurring during colorectal cancer (CRC) development may help us to better understand their roles in CRC cells. Here, we used LC-MS/MS-based PL profiling of cell lines derived from normal colon mucosa, or isolated at distinct stages of CRC development, in order to study alterations of PL species potentially linked with cell transformation. We found that a detailed evaluation of phosphatidylinositol (PI) and phosphatidylserine (PS) classes allowed us to cluster the studied epithelial cell lines according to their origin: i) cells originally derived from normal colon tissue (NCM460, FHC); ii) cell lines derived from colon adenoma or less advanced differentiating adenocarcinoma cells (AA/C1, HT-29); or, iii) cells obtained by in vitro transformation of adenoma cells and advanced colon adenocarcinoma cells (HCT-116, AA/C1/SB10, SW480, SW620). Although we tentatively identified several PS and PI species contributing to cell line clustering, full PI and PS profiles appeared to be a key to the successful cell line discrimination. In parallel, we compared PL composition of primary epithelial (EpCAM-positive) cells, isolated from tumor and adjacent non-tumor tissues of colon cancer patients, with PL profiles of cell lines derived from normal colon mucosa (NCM460) and from colon adenocarcinoma (HCT-116, SW480) cells, respectively. In general, higher total levels of all PL classes were observed in tumor cells. The overall PL profiles of the cell lines, when compared with the respective patient-derived cells, exhibited similarities. Nevertheless, there were also some notable differences in levels of individual PL species. This indicated that epithelial cell lines, derived either from normal colon tissue or from CRC cells, could be employed as models for functional lipidomic analyses of colon cells, albeit with some caution. The biological significance of the observed PL deregulation, or their potential links with specific CRC stages, deserve further investigation.
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8
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Szachowicz-Petelska B. Changes in the Lipid Composition of Biological Membranes under the Influence of Endogenous and Exogenous Factors. BIOCHEMISTRY (MOSCOW) 2019; 84:164-170. [PMID: 31216975 DOI: 10.1134/s000629791902007x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Quantitative and qualitative assessments of cell membrane components are essential for the accurate interpretation of processes occurring in biological membranes. Changes in the structure and function of cell membrane components have been linked to oxidative stress. Oxidative stress induced by chronic ethanol consumption or cancer transformation has been implicated in changing the levels of phospholipids and fatty acids in the cell membrane. In this study, we used high-performance liquid chromatography to quantitate the effects of alcohol and malignant transformation on membrane components, namely phospholipids and free fatty acids. Ethanol increased the phospholipid levels. Moreover, the process of malignant transformation was accompanied by increased levels of phospholipids and arachidonic acid as well as decreased levels of linoleic acid and α-linolenic acid. Thus, these oxidative stress-inducing conditions that cause variations in the cellular composition affect the actions of the cell membrane and cell function.
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9
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Duong HQ, Nemazanyy I, Rambow F, Tang SC, Delaunay S, Tharun L, Florin A, Büttner R, Vandaele D, Close P, Marine JC, Shostak K, Chariot A. The Endosomal Protein CEMIP Links WNT Signaling to MEK1-ERK1/2 Activation in Selumetinib-Resistant Intestinal Organoids. Cancer Res 2018; 78:4533-4548. [PMID: 29915160 DOI: 10.1158/0008-5472.can-17-3149] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 03/02/2018] [Accepted: 06/12/2018] [Indexed: 11/16/2022]
Abstract
MAPK signaling pathways are constitutively active in colon cancer and also promote acquired resistance to MEK1 inhibition. Here, we demonstrate that BRAFV600E -mutated colorectal cancers acquire resistance to MEK1 inhibition by inducing expression of the scaffold protein CEMIP through a β-catenin- and FRA-1-dependent pathway. CEMIP was found in endosomes and bound MEK1 to sustain ERK1/2 activation in MEK1 inhibitor-resistant BRAFV600E-mutated colorectal cancers. The CEMIP-dependent pathway maintained c-Myc protein levels through ERK1/2 and provided metabolic advantage in resistant cells, potentially by sustaining amino acids synthesis. CEMIP silencing circumvented resistance to MEK1 inhibition, partly, through a decrease of both ERK1/2 signaling and c-Myc. Together, our data identify a cross-talk between Wnt and MAPK signaling cascades, which involves CEMIP. Activation of this pathway promotes survival by potentially regulating levels of specific amino acids via a Myc-associated cascade. Targeting this node may provide a promising avenue for treatment of colon cancers that have acquired resistance to targeted therapies.Significance: MEK1 inhibitor-resistant colorectal cancer relies on the scaffold and endosomal protein CEMIP to maintain ERK1/2 signaling and Myc-driven transcription. Cancer Res; 78(16); 4533-48. ©2018 AACR.
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Affiliation(s)
- Hong Quan Duong
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA), GIGA-Molecular Biology of Diseases, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Laboratory of Medical Chemistry, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Institute of Research and Development, Duy Tan University, Quang Trung, Danang, Vietnam.,Department of Cancer Research, Vinmec Research Institute of Stem Cell and Gene Technology, Hanoi, Vietnam
| | - Ivan Nemazanyy
- Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Florian Rambow
- Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology and KULeuven Department of Oncology, Leuven, Belgium
| | - Seng Chuan Tang
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA), GIGA-Molecular Biology of Diseases, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Laboratory of Medical Chemistry, University of Liege, CHU, Sart-Tilman, Liège, Belgium
| | - Sylvain Delaunay
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA), GIGA-Molecular Biology of Diseases, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Institute for Pathology, University Hospital Cologne, Cologne, Germany
| | - Lars Tharun
- Laboratory of Cancer Signaling, University of Liege, Liège, Belgium
| | - Alexandra Florin
- Laboratory of Cancer Signaling, University of Liege, Liège, Belgium
| | - Reinhard Büttner
- Laboratory of Cancer Signaling, University of Liege, Liège, Belgium
| | - Daniel Vandaele
- Gastroenterology Department, University of Liege, CHU, Sart-Tilman, Liège, Belgium
| | - Pierre Close
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA), GIGA-Molecular Biology of Diseases, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Institute for Pathology, University Hospital Cologne, Cologne, Germany
| | - Jean-Christophe Marine
- Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology and KULeuven Department of Oncology, Leuven, Belgium
| | - Kateryna Shostak
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA), GIGA-Molecular Biology of Diseases, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Laboratory of Medical Chemistry, University of Liege, CHU, Sart-Tilman, Liège, Belgium
| | - Alain Chariot
- Interdisciplinary Cluster for Applied Genoproteomics (GIGA), GIGA-Molecular Biology of Diseases, University of Liege, CHU, Sart-Tilman, Liège, Belgium. .,Laboratory of Medical Chemistry, University of Liege, CHU, Sart-Tilman, Liège, Belgium.,Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Wallonia, Belgium
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10
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DeLuca JAA, Garcia-Villatoro EL, Allred CD. Flaxseed Bioactive Compounds and Colorectal Cancer Prevention. Curr Oncol Rep 2018; 20:59. [DOI: 10.1007/s11912-018-0704-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Joshi S, Cooke JRN, Chan DKW, Ellis JA, Hossain SS, Singh-Moon RP, Wang M, Bigio IJ, Bruce JN, Straubinger RM. Liposome size and charge optimization for intraarterial delivery to gliomas. Drug Deliv Transl Res 2018; 6:225-33. [PMID: 27091339 DOI: 10.1007/s13346-016-0294-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Nanoparticles such as liposomes may be used as drug delivery vehicles for brain tumor therapy. Particle geometry and electrostatic properties have been hypothesized to be important determinants of effective tumor targeting after intraarterial injection. In this study, we investigate the combined roles of liposome size and surface charge on the effectiveness of delivery to gliomas after intraarterial injection. Intracarotid injection of liposomes was performed in separate cohorts of both healthy and C6 glioma-bearing Sprague Dawley rats after induction of transient cerebral hypoperfusion. Large (200 nm) and small (60-80 nm) fluorescent dye-loaded liposomes that were either cationic or neutral in surface charge were utilized. Delivery effectiveness was quantitatively measured both with real-time, in vivo and postmortem diffuse reflectance spectroscopy. Semi-quantitative multispectral fluorescence imaging was also utilized to assess the pattern and extent of liposome targeting within tumors. Large cationic liposomes demonstrated the most effective hemispheric and glioma targeting of all the liposomes tested. Selective large cationic liposome retention at the site of glioma growth was observed. The liposome deposition pattern within tumors after intraarterial injection was variable with both core penetration and peripheral deposition observed in specific tumors. This study provides evidence that liposome size and charge are important determinants of effective brain and glioma targeting after intraarterial injection. Our results support the future development of 200-nm cationic liposomal formulations of candidate intraarterial anti-glioma agents for further pre-clinical testing.
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Affiliation(s)
- Shailendra Joshi
- Department of Anesthesiology, Columbia University Medical Center, 630 West 168th Street, P&S Box 46, New York, NY, 10032, USA.
| | - Johann R N Cooke
- Department of Anesthesiology, Columbia University Medical Center, 630 West 168th Street, P&S Box 46, New York, NY, 10032, USA
| | - Darren K W Chan
- Department of Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Jason A Ellis
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - Shaolie S Hossain
- Department of Molecular Cardiology, Texas Heart Institute, Houston, TX, USA.,Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, TX, USA
| | | | - Mei Wang
- Department of Anesthesiology, Columbia University Medical Center, 630 West 168th Street, P&S Box 46, New York, NY, 10032, USA
| | - Irving J Bigio
- Department of Electrical Engineering and Biomedical Engineering, Boston University, Boston, MA, USA
| | - Jeffrey N Bruce
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - Robert M Straubinger
- Department of Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA.,Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute, Buffalo, NY, USA
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12
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Rosilio V. How Can Artificial Lipid Models Mimic the Complexity of Molecule–Membrane Interactions? ACTA ACUST UNITED AC 2018. [DOI: 10.1016/bs.abl.2017.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Alaimo S, Marceca GP, Ferro A, Pulvirenti A. Detecting Disease Specific Pathway Substructures through an Integrated Systems Biology Approach. Noncoding RNA 2017; 3:ncrna3020020. [PMID: 29657291 PMCID: PMC5831934 DOI: 10.3390/ncrna3020020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 03/28/2017] [Accepted: 04/10/2017] [Indexed: 12/14/2022] Open
Abstract
In the era of network medicine, pathway analysis methods play a central role in the prediction of phenotype from high throughput experiments. In this paper, we present a network-based systems biology approach capable of extracting disease-perturbed subpathways within pathway networks in connection with expression data taken from The Cancer Genome Atlas (TCGA). Our system extends pathways with missing regulatory elements, such as microRNAs, and their interactions with genes. The framework enables the extraction, visualization, and analysis of statistically significant disease-specific subpathways through an easy to use web interface. Our analysis shows that the methodology is able to fill the gap in current techniques, allowing a more comprehensive analysis of the phenomena underlying disease states.
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Affiliation(s)
- Salvatore Alaimo
- Bioinformatics Unit, Department of Clinical and Experimental Medicine, University of Catania, c/o Dipartimento di Matematica e Informatica, Viale A. Doria 6, 95125 Catania, Italy.
| | - Gioacchino Paolo Marceca
- Bioinformatics Unit, Department of Clinical and Experimental Medicine, University of Catania, c/o Dipartimento di Matematica e Informatica, Viale A. Doria 6, 95125 Catania, Italy.
| | - Alfredo Ferro
- Bioinformatics Unit, Department of Clinical and Experimental Medicine, University of Catania, c/o Dipartimento di Matematica e Informatica, Viale A. Doria 6, 95125 Catania, Italy.
| | - Alfredo Pulvirenti
- Bioinformatics Unit, Department of Clinical and Experimental Medicine, University of Catania, c/o Dipartimento di Matematica e Informatica, Viale A. Doria 6, 95125 Catania, Italy.
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14
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Altered plasma levels of decanoic acid in colorectal cancer as a new diagnostic biomarker. Anal Bioanal Chem 2016; 408:6321-8. [PMID: 27379390 DOI: 10.1007/s00216-016-9743-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 06/16/2016] [Accepted: 06/22/2016] [Indexed: 12/13/2022]
Abstract
Colorectal cancer (CRC) is one of the most common tumors in developed countries. The five-year survival rate decreases depending on how advanced the CRC is when first diagnosed. Screening has been proven to greatly reduce mortality from colorectal cancer, but an ideal screening tool is far from being established. Here, we aimed to discover and validate early CRC biomarkers by means of an untargeted/targeted metabolomic approach. A preliminary untargeted analysis of plasma lipids performed on a small patient cohort (30 plasma samples) revealed some alterations that occurred in the presence of this tumor. In particular, medium-chain fatty acids with between six and twelve carbon atoms (C6-C12) were found to be the lipid class that showed the most marked changes upon the development of CRC. In order to evaluate the utility of this lipid class as diagnostic CRC biomarkers, a further study based on a wider cohort of patients (117 plasma samples) was performed. Using a targeted approach, these fatty acids were quantified in plasma samples by means of fast gas chromatography coupled to a time-of-flight analyzer. Plasma samples from patients with CRCs at different tumor stages were analyzed and compared to those from healthy subjects, ulcerative colitis patients, high-grade dysplasia adenoma patients, and breast cancer patients in order to test the specificity and sensitivity of these possible biomarkers. Results revealed significant differences among the considered groups in terms of their C6, C8, C10, and C12 fatty acid plasma concentrations. In particular, receiver operating characteristic (ROC) curves obtained for the C10 fatty acid gave an area under the curve of 0.8195 along with a sensitivity of 87.8 % and a specificity of 80 %, strongly suggesting that it could be a valuable early diagnostic biomarker of CRC.
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15
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Duscharla D, Bhumireddy SR, Lakshetti S, Pospisil H, Murthy PVLN, Walther R, Sripadi P, Ummanni R. Prostate Cancer Associated Lipid Signatures in Serum Studied by ESI-Tandem Mass Spectrometryas Potential New Biomarkers. PLoS One 2016; 11:e0150253. [PMID: 26958841 PMCID: PMC4784901 DOI: 10.1371/journal.pone.0150253] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 02/11/2016] [Indexed: 12/14/2022] Open
Abstract
Prostate cancer (PCa) is one amongst the most common cancersin western men. Incidence rate ofPCa is on the rise worldwide. The present study deals with theserum lipidome profiling of patients diagnosed with PCa to identify potential new biomarkers. We employed ESI-MS/MS and GC-MS for identification of significantly altered lipids in cancer patient’s serum compared to controls. Lipidomic data revealed 24 lipids are significantly altered in cancer patinet’s serum (n = 18) compared to normal (n = 18) with no history of PCa. By using hierarchical clustering and principal component analysis (PCA) we could clearly separate cancer patients from control group. Correlation and partition analysis along with Formal Concept Analysis (FCA) have identified that PC (39:6) and FA (22:3) could classify samples with higher certainty. Both the lipids, PC (39:6) and FA (22:3) could influence the cataloging of patients with 100% sensitivity (all 18 control samples are classified correctly) and 77.7% specificity (of 18 tumor samples 4 samples are misclassified) with p-value of 1.612×10−6 in Fischer’s exact test. Further, we performed GC-MS to denote fatty acids altered in PCa patients and found that alpha-linolenic acid (ALA) levels are altered in PCa. We also performed an in vitro proliferation assay to determine the effect of ALA in survival of classical human PCa cell lines LNCaP and PC3. We hereby report that the altered lipids PC (39:6) and FA (22:3) offer a new set of biomarkers in addition to the existing diagnostic tests that could significantly improve sensitivity and specificity in PCa diagnosis.
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Affiliation(s)
- Divya Duscharla
- Center for Chemical Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Centre for Academy of Scientific & Innovative Research, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
| | - Sudarshana Reddy Bhumireddy
- Centre for Academy of Scientific & Innovative Research, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
| | - Sridhar Lakshetti
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
| | - Heike Pospisil
- High Performance Computing in Life Sciences, Technical University, Wildau, Germany
| | - P. V. L. N. Murthy
- Department of Urology, Nizam’s Institute of Medical Sciences (NIMS), Hyderabad, India
| | - Reinhard Walther
- Department of Medical Biochemistry and Molecular Biology, University of Greifswald, Greifswald, Germany
| | - Prabhakar Sripadi
- Centre for Academy of Scientific & Innovative Research, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
| | - Ramesh Ummanni
- Center for Chemical Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Centre for Academy of Scientific & Innovative Research, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- * E-mail:
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16
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Zhang Y, He C, Qiu L, Wang Y, Qin X, Liu Y, Li Z. Serum Unsaturated Free Fatty Acids: A Potential Biomarker Panel for Early-Stage Detection of Colorectal Cancer. J Cancer 2016; 7:477-83. [PMID: 26918062 PMCID: PMC4749369 DOI: 10.7150/jca.13870] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 12/03/2015] [Indexed: 12/12/2022] Open
Abstract
Background: To screen biomarkers to differentiate early-stage colorectal cancer (CRC) from benign colorectal disease (BCD) and healthy controls. Materials & Methods: Quantitative and qualitative analysis of C16:1, C18:3, C18:2, C18:1, C20:4, and C22:6 in 185 healthy controls, 55 patients with BCD, and 139 patients with CRC was performed. Comparisons of their levels in between CRC patients, BCD patients, and healthy controls were performed using Mann-Whitney U test. Results: Serum levels of C16:1, C18:3, C18:2, C18:1, C20:4, and C22:6 in CRC patients were significantly decreased compared with healthy controls and BCD patients. A combination of C16:1, C18:2, C20:4, and C22:6 has excellent diagnostic performance to differentiate early-stage CRC patients from healthy controls plus BCD patients, with an AUC of 0.926, a sensitivity of 84.6%, and a specificity of 89.8%. Conclusions: Serum levels of C16:1, C18:2, C20:4, and C22:6 could be diagnostic indicators of early-stage CRC patients.
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Affiliation(s)
- Yaping Zhang
- 1. Department of Biophysics and Structural Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Chengyan He
- 2. Clinical Lab Diagnosis, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Ling Qiu
- 3. Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yanmin Wang
- 4. Department of Clinical Laboratory, Heze Municipal Hospital, Heze, China
| | - Xuzhen Qin
- 3. Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yujie Liu
- 1. Department of Biophysics and Structural Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Zhili Li
- 1. Department of Biophysics and Structural Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & School of Basic Medicine, Peking Union Medical College, Beijing, China
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17
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da Fonseca CO, Khandelia H, Salazar MD, Schönthal AH, Meireles OC, Quirico-Santos T. Perillyl alcohol: Dynamic interactions with the lipid bilayer and implications for long-term inhalational chemotherapy for gliomas. Surg Neurol Int 2016; 7:1. [PMID: 26862440 PMCID: PMC4722523 DOI: 10.4103/2152-7806.173301] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/26/2015] [Indexed: 01/03/2023] Open
Abstract
Background: Gliomas display a high degree of intratumor heterogeneity, including changes in physiological parameters and lipid composition of the plasma membrane, which may contribute to the development of drug resistance. Biophysical interactions between therapeutic agents and the lipid components at the outer plasma membrane interface are critical for effective drug uptake. Amphipathic molecules such as perillyl alcohol (POH) have a high partition coefficient and generally lead to altered lipid acyl tail dynamics near the lipid-water interface, impacting the lipid bilayer structure and transport dynamics. We therefore hypothesized that glioma cells may display enhanced sensitivity to POH-induced apoptosis due to plasma membrane alterations, while in non-transformed cells, POH may be expelled through thermal agitation. Methods: Interactions between POH and the plasma membrane was studied using molecular dynamics simulations. In this phase I/II trial, we set up to evaluate the clinical effectiveness of long-term (up to 5 years) daily intranasal administration of POH in a cohort of 19 patients with low-grade glioma (LGG). Importantly, in a series of clinical studies previously published by our group, we have successfully established that intranasal delivery of POH to patients with malignant gliomas is a viable and effective therapeutic strategy. Results: POH altered the plasma membrane potential of the lipid bilayer of gliomas and prolonged intranasal administration of POH in a cohort of patients with LGG halted disease progression with virtually no toxicity. Conclusion: Altogether, the results suggest that POH-induced alterations of the plasma membrane might be contributing to its therapeutic efficacy in preventing LGG progression.
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Affiliation(s)
- Clovis Orlando da Fonseca
- Department of General and Specialized Surgery, Antonio Pedro University Hospital, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Himanshu Khandelia
- Memphys-Center for Biomembrane Physics, University of Southern Denmark, Odense, Denmark
| | | | - Axel H Schönthal
- Department of Microbiology and Immunology, Keck School of Medicine, University of Southern California, California, USA
| | - Osório C Meireles
- Retired Professor from the Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Thereza Quirico-Santos
- Department of Cellular and Molecular Biology, Institute of Biology, Fluminense Federal University, Rio de Janeiro, Brazil
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18
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Rosa A, Piras A, Nieddu M, Putzu D, Cesare Marincola F, Falchi AM. Mugil cephalus roe oil obtained by supercritical fluid extraction affects the lipid profile and viability in cancer HeLa and B16F10 cells. Food Funct 2016; 7:4092-103. [DOI: 10.1039/c6fo00914j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We explored the changes in viability and lipid profile occurring in cancer cells, melanoma cells (B16F10 cells) and cervical carcinoma cells (HeLa cells), when exposed to an n-3 PUFA-rich oil obtained by SFE-CO2 extraction from Mugil cephalus processed roe (bottarga).
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Affiliation(s)
- A. Rosa
- Department of Biomedical Sciences
- University of Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - A. Piras
- Department of Chemical and Geological Sciences
- University of Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - M. Nieddu
- Department of Biomedical Sciences
- University of Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - D. Putzu
- Department of Biomedical Sciences
- University of Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - F. Cesare Marincola
- Department of Chemical and Geological Sciences
- University of Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
| | - A. M. Falchi
- Department of Biomedical Sciences
- University of Cagliari
- Cittadella Universitaria
- 09042 Monserrato
- Italy
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19
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Abdolahad M, Saeidi A, Janmaleki M, Mashinchian O, Taghinejad M, Taghinejad H, Azimi S, Mahmoudi M, Mohajerzadeh S. A single-cell correlative nanoelectromechanosensing approach to detect cancerous transformation: monitoring the function of F-actin microfilaments in the modulation of the ion channel activity. NANOSCALE 2015; 7:1879-1887. [PMID: 25524888 DOI: 10.1039/c4nr06102k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cancerous transformation may be dependent on correlation between electrical disruptions in the cell membrane and mechanical disruptions of cytoskeleton structures. Silicon nanotube (SiNT)-based electrical probes, as ultra-accurate signal recorders with subcellular resolution, may create many opportunities for fundamental biological research and biomedical applications. Here, we used this technology to electrically monitor cellular mechanosensing. The SiNT probe was combined with an electrically activated glass micropipette aspiration system to achieve a new cancer diagnostic technique that is based on real-time correlation between mechanical and electrical behaviour of single cells. Our studies demonstrated marked changes in the electrical response following increases in the mechanical aspiration force in healthy cells. In contrast, such responses were extremely weak for malignant cells. Confocal microscopy results showed the impact of actin microfilament remodelling on the reduction of the electrical response for aspirated cancer cells due to the significant role of actin in modulating the ion channel activity in the cell membrane.
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Affiliation(s)
- Mohammad Abdolahad
- Nanoelectronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
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20
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Rojas C, Pan-Castillo B, Valls C, Pujadas G, Garcia-Vallve S, Arola L, Mulero M. Resveratrol enhances palmitate-induced ER stress and apoptosis in cancer cells. PLoS One 2014; 9:e113929. [PMID: 25436452 PMCID: PMC4250062 DOI: 10.1371/journal.pone.0113929] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 11/03/2014] [Indexed: 01/01/2023] Open
Abstract
Background Palmitate, a saturated fatty acid (FA), is known to induce toxicity and cell death in various types of cells. Resveratrol (RSV) is able to prevent pathogenesis and/or decelerate the progression of a variety of diseases. Several in vitro and in vivo studies have also shown a protective effect of RSV on fat accumulation induced by FAs. Additionally, endoplasmic reticulum (ER) stress has recently been linked to cellular adipogenic responses. To address the hypothesis that the RSV effect on excessive fat accumulation promoted by elevated saturated FAs could be partially mediated by a reduction of ER stress, we studied the RSV action on experimentally induced ER stress using palmitate in several cancer cell lines. Principal Findings We show that, unexpectedly, RSV promotes an amplification of palmitate toxicity and cell death and that this mechanism is likely due to a perturbation of palmitate accumulation in the triglyceride form and to a less important membrane fluidity variation. Additionally, RSV decreases radical oxygen species (ROS) generation in palmitate-treated cells but leads to enhanced X-box binding protein-1 (XBP1) splicing and C/EBP homologous protein (CHOP) expression. These molecular effects are induced simultaneously to caspase-3 cleavage, suggesting that RSV promotes palmitate lipoapoptosis primarily through an ER stress-dependent mechanism. Moreover, the lipotoxicity reversion induced by eicosapentaenoic acid (EPA) or by a liver X receptor (LXR) agonist reinforces the hypothesis that RSV-mediated inhibition of palmitate channeling into triglyceride pools could be a key factor in the aggravation of palmitate-induced cytotoxicity. Conclusions Our results suggest that RSV exerts its cytotoxic role in cancer cells exposed to a saturated FA context primarily by triglyceride accumulation inhibition, probably leading to an intracellular palmitate accumulation that triggers a lipid-mediated cell death. Additionally, this cell death is promoted by ER stress through a CHOP-mediated apoptotic process and may represent a potential anticancer strategy.
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Affiliation(s)
- Cristina Rojas
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
| | - Belén Pan-Castillo
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
- Reproductive Biology and Gynecological Oncology Group, Center for Nanohealth, Institute of Life, Swansea University, Swansea, SA28PP, United Kingdom
| | - Cristina Valls
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
| | - Gerard Pujadas
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
- Centre Tecnològic de Nutrició i Salut (CTNS), TECNIO, CEICS, Reus, 43204, Spain
| | - Santi Garcia-Vallve
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
- Centre Tecnològic de Nutrició i Salut (CTNS), TECNIO, CEICS, Reus, 43204, Spain
| | - Lluis Arola
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
- Centre Tecnològic de Nutrició i Salut (CTNS), TECNIO, CEICS, Reus, 43204, Spain
| | - Miquel Mulero
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, 43007, Spain
- * E-mail:
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21
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Askari M, Darabi M, Zare Mahmudabadi R, Oboodiat M, Fayezi S, Mostakhdemin Hosseini Z, Pirzadeh A. Tissue fatty acid composition and secretory phospholipase-A2 activity in oral squamous cell carcinoma. Clin Transl Oncol 2014; 17:378-83. [PMID: 25351172 DOI: 10.1007/s12094-014-1242-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 10/03/2014] [Indexed: 12/19/2022]
Abstract
PURPOSE Oral squamous cell carcinoma (OSCC) is a remarkable health problem worldwide, but its pathogenesis remains unknown. The aim of this study was to compare fat composition and secretory phospholipase-A2 (sPLA2) activity between the malignant and adjacent normal squamous tissues in patients with OSCC. METHODS Paired samples of malignant squamous and adjacent normal-appearing tissues were collected from 27 patients with OSCC. The fatty acid composition in the obtained tissues was determined by gas liquid chromatography. Tissue enzyme activities of sPLA2 were measured using the standard assay with Diheptanoyl Thio-Phosphatidylcholine as substrate. RESULTS In the OSCC tissue, the level of stearic acid (18:0) and activity of sPLA2 were higher (P < 0.001), and the levels of oleic acid (18:1n-9) and linoleic acid (18:2n-6) were lower than that in the adjacent normal-appearing squamous tissue (P < 0.001). The activity of sPLA2 in OSCC was strongly negatively correlated with the amount of 18:2n-6 (r = -0.41, P < 0.001). Negative significant associations were observed between the OSCC invasion and tissue levels of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHE). CONCLUSION The changes in the fatty acid composition and sPLA2 activity may be regarded as indicators of altered lipid metabolism occurring in vivo during squamous cell carcinogenesis.
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Affiliation(s)
- M Askari
- Department of Maxillofacial Pathology, Faculty of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran, Iran
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22
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Hondroulis E, Zhang R, Zhang C, Chen C, Ino K, Matsue T, Li CZ. Immuno nanoparticles integrated electrical control of targeted cancer cell development using whole cell bioelectronic device. Am J Cancer Res 2014; 4:919-30. [PMID: 25057316 PMCID: PMC4107292 DOI: 10.7150/thno.8575] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 06/04/2014] [Indexed: 02/03/2023] Open
Abstract
Electrical properties of cells determine most of the cellular functions, particularly ones which occur in the cell's membrane. Manipulation of these electrical properties may provide a powerful electrotherapy option for the treatment of cancer as cancerous cells have been shown to be more electronegative than normal proliferating cells. Previously, we used an electrical impedance sensing system (EIS) to explore the responses of cancerous SKOV3 cells and normal HUVEC cells to low intensity (<2 V/cm) AC electric fields, determining that the optimal frequency for SKOV3 proliferation arrest was 200 kHz, without harming the non-cancerous HUVECs. In this study, to determine if these effects are cell type dependant, human breast adenocarcinoma cells (MCF7) were subjected to a range of frequencies (50 kHz-2 MHz) similar to the previously tested SKOV3. For the MCF7, an optimal frequency of 100 kHz was determined using the EIS, indicating a higher sensitivity towards the applied field. Further experiments specifically targeting the two types of cancer cells using HER2 antibody functionalized gold nanoparticles (HER2-AuNPs) were performed to determine if enhanced electric field strength can be induced via the application of nanoparticles, consequently leading to the killing of the cancerous cells without affecting non cancerous HUVECs and MCF10a providing a platform for the development of a non-invasive cancer treatment without any harmful side effects. The EIS was used to monitor the real-time consequences on cellular viability and a noticeable decrease in the growth profile of the MCF7 was observed with the application of the HER2-AuNPs and the electric fields indicating specific inhibitory effects on dividing cells in culture. To further understand the effects of the externally applied field to the cells, an Annexin V/EthD-III assay was performed to determine the cell death mechanism indicating apoptosis. The zeta potential of the SKOV3 and the MCF7 before and after incorporation of the HER2-AuNPs was also obtained indicating a decrease in zeta potential with the incorporation of the nanoparticles. The outcome of this research will improve our fundamental understanding of the behavior of cancer cells and define optimal parameters of electrotherapy for clinical and drug delivery applications.
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23
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Rosa A, Scano P, Atzeri A, Deiana M, Falchi AM. Potential anti-tumor effects of Mugil cephalus processed roe extracts on colon cancer cells. Food Chem Toxicol 2013; 60:471-8. [DOI: 10.1016/j.fct.2013.08.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/02/2013] [Accepted: 08/04/2013] [Indexed: 01/03/2023]
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24
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Stephenson JA, Al-Taan O, Arshad A, West AL, Calder PC, Morgan B, Metcalfe MS, Dennison AR. Unsaturated fatty acids differ between hepatic colorectal metastases and liver tissue without tumour in humans: results from a randomised controlled trial of intravenous eicosapentaenoic and docosahexaenoic acids. Prostaglandins Leukot Essent Fatty Acids 2013; 88:405-10. [PMID: 23647811 DOI: 10.1016/j.plefa.2013.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 03/28/2013] [Accepted: 04/02/2013] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Mediators derived from the n-6 polyunsaturated fatty acid (PUFA) arachidonic acid oxidation have been shown to have tumour promoting effects in experimental models, while n-3 PUFAs are thought to be protective. Here we report fatty acid concentrations in hepatic colorectal metastases compared to liver tissue without tumour in humans. METHODS Twenty patients with colorectal liver metastasis were randomized to receive a 72 h infusion of parenteral nutrition with or without n-3 PUFAs. Histological samples from liver metastases and liver tissue without tumour were obtained from 15 patients at the time of their subsequent liver resection (mean 8 days (range 4-12) post-infusion) and the fatty acid composition determined by gas chromatography. RESULTS There were no significant differences in fatty acid composition between the two intervention groups. When data from all patients were combined, liver tissue without tumour had a higher content of both n-3 and n-6 PUFAs and a lower content of oleic acid and total n-9 fatty acids compared with tumour tissue (p<0.0001, 0.0002,<0.0001 and <0.0001, respectively). The n-6/n-3 PUFA ratio was found to be higher in tumour tissue than tissue without tumour (p<0.0001). CONCLUSIONS Hepatic colorectal adenocarcinoma metastases have a higher content of n-9 fatty acids and a lower content of n-6 and n-3 PUFAs than liver tissue without tumour.
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Affiliation(s)
- James A Stephenson
- Department of Imaging, University Hospitals of Leicester NHS Trust, Gwendolen Road, Leicester LE5 4PW, United Kingdom.
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26
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Abstract
AbstractCancer transformation is characterized by changes in cell metabolism, which can alter the structure and function of cell membrane components, including integral membrane proteins. Qualitative and quantitative estimations of integral membrane protein are necessary for studies aimed at understanding their modifications under pathological conditions. Herein, we used a high-performance liquid chromatography (HPLC)-based approach that involved selective hydrolysis of isolated tissue cell membrane proteins to peptides, resolution by chromatography and determination of the amino acid content (phenylalanine (Phe), tyrosine (Tyr), cysteine (Cys) and lysine (Lys)) in individual peptides. The results demonstrate decrease in peptide levels and their amino acids content in integral membrane proteins in human colorectal cancer tissue. Therefore, cancer transformation causes a decrease in the levels of integral membrane proteins, which may in turn lead to an increase in the levels of other charged molecules on the cell surface, such as phospholipids. It might lead to the reconstruction and functional rearrangement of the cell membrane, for example: the permeability, electric properties, fluidity etc.
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Abstract
A Mediterranean diet appears to have health benefits in many domains of human health, mediated perhaps by its anti-inflammatory effects. Metabolism of fatty acids and subsequent eicosanoid production is a key mechanism by which a Mediterranean diet can exert anti-inflammatory effects. Both dietary fatty acids and fatty acid metabolism determine fatty acid availability for cyclooxygenase- and lipoxygenase-dependent production of eicosanoids, namely prostaglandins and leukotrienes. In dietary intervention studies and in observational studies of the Mediterranean diet, blood levels of fatty acids do reflect dietary intakes but are attenuated. Small differences in fatty acid levels, however, appear to be important, especially when exposures occur over long periods of time. This review summarizes how fat intakes from a Greek-style Mediterranean diet can be expected to affect fatty acid metabolizing proteins, with an emphasis on the metabolic pathways that lead to the formation of proinflammatory eicosanoids. The proteins involved in these pathways are ripe for investigation using proteomic approaches and may be targets for colon cancer prevention.
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Affiliation(s)
- Zora Djuric
- Department of Family Medicine, University of Michigan, Ann Arbor, Michigan 48109-5930, USA.
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Cooks RG, Manicke NE, Dill AL, Ifa DR, Eberlin LS, Costa AB, Wang H, Huang G, Ouyang Z. New ionization methods and miniature mass spectrometers for biomedicine: DESI imaging for cancer diagnostics and paper spray ionization for therapeutic drug monitoring. Faraday Discuss 2011; 149:247-67; discussion 333-56. [PMID: 21413184 PMCID: PMC10712017 DOI: 10.1039/c005327a] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
The state-of-the-art in two new ambient ionization methods for mass spectrometry, desorption electrospray ionization (DESI) and paper spray (PS), is described and their utility is illustrated with new studies on tissue imaging and biofluid analysis. DESI is an ambient ionization method that can be performed on untreated histological sections of biological tissue in the open lab environment to image lipids, fatty acids, hormones and other compounds. Paper spray is performed in the open lab too; it involves electrospraying dry blood spots or biofluid deposits from a porous medium. PS is characterized by extreme simplicity and speed: a spot of whole blood or other biofluid is analyzed directly from paper, simply by applying a high voltage to the moist paper. Both methods are being developed for use in diagnostics as a means to inform therapy. DESI imaging is applied to create molecular maps of tissue sections without prior labeling or other sample preparation. Like other methods of mass spectrometry imaging (MSI), it combines the chemical speciation of multiple analytes with information on spatial distributions. DESI imaging provides valuable information which correlates with the disease state of tissue as determined by standard histochemical methods. Positive-ion data are presented which complement previously reported negative-ion data on paired human bladder cancerous and adjacent normal tissue sections from 20 patients. These data add to the evidence already in the literature demonstrating that differences in the distributions of particular lipids contain disease-diagnostic information. Multivariate statistical analysis using principal component analysis (PCA) is used to analyze the imaging MS data, and so confirm differences between the lipid profiles of diseased and healthy tissue types. As more such data is acquired, DESI imaging has the potential to be a diagnostic tool for future cancer detection in situ; this suggests a potential role in guiding therapy in parallel with standard histochemical and immunohistological methods. The PS methodology is aimed at high-throughput clinical measurement of quantitative levels of particular therapeutic agents in blood and other biofluids. The experiment allows individual drugs to be quantified at therapeutic levels and data is presented showing quantitative drug analysis from mixtures of therapeutic drugs in whole blood. Data on cholesterol sulfate, a new possible prostate biomarker seen at elevated levels in diseased prostate tissue, but not in healthy prostate tissue in serum are reported using paper spray ionization.
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Affiliation(s)
- R Graham Cooks
- Department of Chemistry and Center for Analytical Instrumentation Development, Purdue University, West Lafayette, IN 47907, USA.
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Minville-Walz M, Pierre AS, Pichon L, Bellenger S, Fèvre C, Bellenger J, Tessier C, Narce M, Rialland M. Inhibition of stearoyl-CoA desaturase 1 expression induces CHOP-dependent cell death in human cancer cells. PLoS One 2010; 5:e14363. [PMID: 21179554 PMCID: PMC3002938 DOI: 10.1371/journal.pone.0014363] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Accepted: 11/26/2010] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Cancer cells present a sustained de novo fatty acid synthesis with an increase of saturated and monounsaturated fatty acid (MUFA) production. This change in fatty acid metabolism is associated with overexpression of stearoyl-CoA desaturase 1 (Scd1), which catalyses the transformation of saturated fatty acids into monounsaturated fatty acids (e.g., oleic acid). Several reports demonstrated that inhibition of Scd1 led to the blocking of proliferation and induction of apoptosis in cancer cells. Nevertheless, mechanisms of cell death activation remain to be better understood. PRINCIPAL FINDINGS In this study, we demonstrated that Scd1 extinction by siRNA triggered abolition of de novo MUFA synthesis in cancer and non-cancer cells. Scd1 inhibition-activated cell death was only observed in cancer cells with induction of caspase 3 activity and PARP-cleavage. Exogenous supplementation with oleic acid did not reverse the Scd1 ablation-mediated cell death. In addition, Scd1 depletion induced unfolded protein response (UPR) hallmarks such as Xbp1 mRNA splicing, phosphorylation of eIF2α and increase of CHOP expression. However, the chaperone GRP78 expression, another UPR hallmark, was not affected by Scd1 knockdown in these cancer cells indicating a peculiar UPR activation. Finally, we showed that CHOP induction participated to cell death activation by Scd1 extinction. Indeed, overexpression of dominant negative CHOP construct and extinction of CHOP partially restored viability in Scd1-depleted cancer cells. CONCLUSION These results suggest that inhibition of de novo MUFA synthesis by Scd1 extinction could be a promising anti-cancer target by inducing cell death through UPR and CHOP activation.
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Affiliation(s)
- Mélaine Minville-Walz
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Anne-Sophie Pierre
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Laurent Pichon
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Sandrine Bellenger
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Cécile Fèvre
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Jérôme Bellenger
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Christian Tessier
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Michel Narce
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
| | - Mickaël Rialland
- Université de Bourgogne, Centre de Recherche INSERM «Lipides, Nutrition, Cancer» UMR866, Dijon, France
- * E-mail:
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Yu F, Lu S, Yu F, Shi J, McGuire PM, Wang R. Cytotoxic activity of an octadecenoic acid extract from Euphorbia kansui (Euphorbiaceae) on human tumour cell strains. J Pharm Pharmacol 2010; 60:253-9. [DOI: 10.1211/jpp.60.2.0015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
We have investigated the cytotoxic and antitumour activity of an octadecenoic acid extract, mainly containing oleic and linoleic acids, from Euphorbia kansui on human gastric (SGC-7901), hepatocellular carcinoma (BEL-7402), and leukaemia (HL-60) tumour cell strains. Significant and dose-dependent antiproliferation effects were observed on tumour cells from the dose of 3.2 μg mL−1, which were comparable with or better than those of the common antitumour agent 5-fluorouracil. Results from the clone formation assay and flow cytometry indicated that the mixture of octadecenoic acids resulted in a dose-dependent reduction in the number of tumour cells and significantly inhibited cell proliferation, with induced apoptosis and G0/G1 phase cell cycle arrest. Also, the octadecenoic acids could not only cause cell apoptosis/necrosis but also functionally and structurally damage the tumour cell membrane and cell ultra-structures. These observations encourage further clinical evaluation of the inhibitory effects of octadecenoic acids on various forms of cancer.
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Affiliation(s)
- Farong Yu
- School of Public Security, Gansu Institute of Political Science and Law, Lanzhou 730070, China
| | - Shunqing Lu
- Institute of Biodiversity, Huangshan University, Huangshan 610041, China
| | - Fahong Yu
- ICBR, University of Florida, Gainesville, FL 32610, USA
| | - Junnian Shi
- School of Public Security, Gansu Institute of Political Science and Law, Lanzhou 730070, China
| | - Peter M McGuire
- Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL 32610, USA
| | - Rui Wang
- School of Life Sciences, Lanzhou University, Lanzhou 730000, China
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Decreased polyunsaturated Fatty Acid content contributes to increased survival in human colon cancer. JOURNAL OF ONCOLOGY 2009; 2009:867915. [PMID: 19841681 PMCID: PMC2762309 DOI: 10.1155/2009/867915] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Revised: 07/24/2009] [Accepted: 07/27/2009] [Indexed: 12/14/2022]
Abstract
Among diet
components, some fatty acids are known to affect
several stages of colon carcinogenesis, whereas
others are probably helpful in preventing
tumors. In light of this, our aim was to
determine the composition of fatty acids and the
possible correlation with apoptosis in human
colon carcinoma specimens at different
Duke's stages and to evaluate the effect of
enriching human colon cancer cell line with the
possible reduced fatty acid(s). Specimens of
carcinoma were compared with the corresponding
non-neoplastic mucosa: a significant decrease of
arachidonic acid, PPARα, Bad, and Bax and a significant increase of COX-2,
Bcl-2, and pBad were found. The importance of arachidonic acid in
apoptosis was demonstrated by enriching a Caco-2 cell line with
this fatty acid. It induced apoptosis in a dose- and
time-dependent manner via induction of PPARα that, in turn, decreased COX-2. In conclusion, the
reduced content of arachidonic acid is likely related to
carcinogenic process decreasing the susceptibility of cancer cells
to apoptosis.
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