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Lipid storage cancer

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https://www.readbyqxmd.com/read/29312541/energy-metabolism-in-glioblastoma-stem-cells-ppar%C3%AE-a-metabolic-adaptor-to-intratumoral-microenvironment
#1
Alessia Fidoamore, Loredana Cristiano, Chiara Laezza, Renato Galzio, Elisabetta Benedetti, Benedetta Cinque, Andrea Antonosante, Michele d'Angelo, Vanessa Castelli, Maria Grazia Cifone, Rodolfo Ippoliti, Antonio Giordano, Annamaria Cimini
Glioblastoma (GB), the most-common cancer in the adult brain, despite surgery and radio/ chemotherapy, is to date almost incurable. Many hypoxic tumors, including GB, show metabolic reprogramming to sustain uncontrolled proliferation, hypoxic conditions and angiogenesis. Peroxisome Proliferator-activated Receptors (PPAR), particularly the α isotype, have been involved in the control of energetic metabolism. Herein, we characterized patient-derived GB neurospheres focusing on their energetic metabolism and PPARα expression...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29303993/endolysosomal-cation-channels-and-cancer-a-link-with-great-potential
#2
REVIEW
Christian Grimm, Karin Bartel, Angelika M Vollmar, Martin Biel
The endolysosomal system (ES) consists of lysosomes; early, late, and recycling endosomes; and autophagosomes. It is a key regulator not only of macromolecule degradation and recycling, plasma membrane repair, homeostasis, and lipid storage, but also of antigen presentation, immune defense, cell motility, cell death signaling, tumor growth, and cancer progression. In addition, it plays a critical role in autophagy, and the autophagy-lysosome pathway is intimately associated with the hallmarks of cancer, such as escaping cell death pathways, evading immune surveillance, and deregulating metabolism...
January 5, 2018: Pharmaceuticals
https://www.readbyqxmd.com/read/29296211/global-lipidomics-identified-plasma-lipids-as-novel-biomarkers-for-early-detection-of-lung-cancer
#3
Zongtao Yu, Hankui Chen, Junmei Ai, Yong Zhu, Yan Li, Jeffrey A Borgia, Jin-Song Yang, Jicai Zhang, Bin Jiang, Wei Gu, Youping Deng
Purpose: Lipids play roles in membrane structure, energy storage, and signal transduction as well as in human cancers. Here we adopt lipidomics to identify plasma lipid markers for early screening and detection of lung cancer. Experimental Design: Using mass spectrometry, we profiled 390 individual lipids using training and validation strategy in a total of 346 plasma samples from 199 early NSCLC patients, including 113 adenocacinoma and 86 squamous cell cancers (SqCC), and from 147 healthy controls...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29258509/chemotherapy-diminishes-lipid-storage-capacity-of-adipose-tissue-in-a-preclinical-model-of-colon-cancer
#4
Maryam Ebadi, Catherine J Field, Richard Lehner, Vera C Mazurak
BACKGROUND: Accelerated loss of adipose tissue in cancer is associated with shorter survival, and reduced quality of life. Evidence is emerging suggesting tumour association with alterations in adipose tissue, but much less is known about drug-related mechanisms contributing to adipose atrophy. Identification of mechanisms by which tumour and cancer treatments, such as chemotherapy, affect adipose tissue are required to develop appropriate therapeutic interventions to prevent fat depletion in cancer...
December 19, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29211796/reprogramming-pancreatic-stellate-cells-via-p53-activation-a-putative-target-for-pancreatic-cancer-therapy
#5
Maya Saison-Ridinger, Kathleen E DelGiorno, Tejia Zhang, Annabelle Kraus, Randall French, Dawn Jaquish, Crystal Tsui, Galina Erikson, Benjamin T Spike, Maxim N Shokhirev, Christopher Liddle, Ruth T Yu, Michael Downes, Ronald M Evans, Alan Saghatelian, Andrew M Lowy, Geoffrey M Wahl
Pancreatic ductal adenocarcinoma (PDAC) is characterized by an extremely dense fibrotic stroma, which contributes to tumor growth, metastasis, and drug resistance. During tumorigenesis, quiescent pancreatic stellate cells (PSCs) are activated and become major contributors to fibrosis, by increasing growth factor signaling and extracellular matrix deposition. The p53 tumor suppressor is known to restrict tumor initiation and progression through cell autonomous mechanisms including apoptosis, cell cycle arrest, and senescence...
2017: PloS One
https://www.readbyqxmd.com/read/29176561/hif-drives-lipid-deposition-and-cancer-in-ccrcc-via-repression-of-fatty-acid-metabolism
#6
Weinan Du, Luchang Zhang, Adina Brett-Morris, Brittany Aguila, Janos Kerner, Charles L Hoppel, Michelle Puchowicz, Dolors Serra, Laura Herrero, Brian I Rini, Steven Campbell, Scott M Welford
Clear cell renal cell carcinoma (ccRCC) is histologically defined by its lipid and glycogen-rich cytoplasmic deposits. Alterations in the VHL tumor suppressor stabilizing the hypoxia-inducible factors (HIFs) are the most prevalent molecular features of clear cell tumors. The significance of lipid deposition remains undefined. We describe the mechanism of lipid deposition in ccRCC by identifying the rate-limiting component of mitochondrial fatty acid transport, carnitine palmitoyltransferase 1A (CPT1A), as a direct HIF target gene...
November 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/29166560/analytical-challenges-and-recent-advances-in-mass-spectrometry-based-lipidomics
#7
Yepy H Rustam, Gavin E Reid
No abstract text is available yet for this article.
December 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29138263/srebp-1c-as-a-molecular-bridge-between-lipogenesis-and-cell-cycle-progression-of-clear-cell-renal-carcinoma
#8
Gautam Sethi, Muthu K Shanmugam, Alan Prem Kumar
SREBP-1c promotes lipogenesis and tumor growth in various cancers. It is well-known that clear cell renal cell carcinoma (ccRCC), a major subtype of the kidney cancers, exhibits elevated lipid accumulation. However, it has not been fully understood how lipid metabolism might be associated with cell cycle regulation in ccRCC. In recent issue of Molecular and Cellular Biology , Lee et al. demonstrate that SREBP-1c is upregulated in ccRCC by RNF20 downregulation, leading to aberrant lipid storage and PTTG1-dependent cell cycle progression...
November 14, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29033534/multicellular-tumor-spheroids-of-human-uveal-melanoma-induce-genes-associated-with-anoikis-resistance-lipogenesis-and-ssxs
#9
Charlotte Ness, Øystein Garred, Nils A Eide, Theresa Kumar, Ole K Olstad, Thomas P Bærland, Goran Petrovski, Morten C Moe, Agate Noer
PURPOSE: Uveal melanoma (UM) has a high propensity for metastatic spread, and approximately 40-50% of patients die of metastatic disease. Metastases can be found at the time of diagnosis but also several years after the tumor has been removed. The survival of disseminated cancer cells is known to be linked to anchorage independence, anoikis resistance, and an adaptive cellular metabolism. The cultivation of cancer cells as multicellular tumor spheroids (MCTS) by anchorage-independent growth enriches for a more aggressive phenotype...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29029595/2-hydroxyoleic-acid-inserted-liposomes-as-a-multifunctional-carrier-of-anticancer-drugs
#10
Eun-Ji Jang, Woo Rim Choi, Soo-Yeon Kim, Soon-Seok Hong, Inmoo Rhee, Sang-Jin Lee, Sung Weon Choi, Han-Gon Choi, Soo-Jeong Lim
Studies have shown that insertion of oleic acid into lipid bilayers can modulate the membrane properties of liposomes so as to improve their function as drug carriers. Considering that 2-hydroxyoleic acid (2OHOA), a potential antitumor agent currently undergoing clinical trials, is a derivative of oleic acid, we explored the possibility of developing 2OHOA-inserted liposomes as a multifunctional carrier of antitumor drugs in the present study. The insertion of 2OHOA into lipid bilayers was confirmed by surface charge determination and differential scanning calorimetry...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28974775/biochemical-and-cellular-properties-of-insulin-receptor-signalling
#11
REVIEW
Rebecca A Haeusler, Timothy E McGraw, Domenico Accili
The mechanism of insulin action is a central theme in biology and medicine. In addition to the rather rare condition of insulin deficiency caused by autoimmune destruction of pancreatic β-cells, genetic and acquired abnormalities of insulin action underlie the far more common conditions of type 2 diabetes, obesity and insulin resistance. The latter predisposes to diseases ranging from hypertension to Alzheimer disease and cancer. Hence, understanding the biochemical and cellular properties of insulin receptor signalling is arguably a priority in biomedical research...
January 2018: Nature Reviews. Molecular Cell Biology
https://www.readbyqxmd.com/read/28898395/endogenous-lipid-antigens-for-invariant-natural-killer-t-cells-hold-the-reins-in-adipose-tissue-homeostasis
#12
REVIEW
Robert J van Eijkeren, Olga Krabbe, Marianne Boes, Henk S Schipper, Eric Kalkhoven
The global obesity epidemic and its associated co-morbidities, including type 2 diabetes, cardiovascular disease and certain types of cancers, have drawn attention to the pivotal role of adipocytes in health and disease. Besides their 'classical' function in energy storage and release, adipocytes interact with adipose-tissue-resident immune cells, among which are lipid-responsive invariant natural killer T (iNKT) cells. The iNKT cells are activated by lipid antigens presented by antigen-presenting cells as CD1d/lipid complexes...
September 12, 2017: Immunology
https://www.readbyqxmd.com/read/28898055/a-carbon-nanotube-optical-reporter-maps-endolysosomal-lipid-flux
#13
Prakrit V Jena, Daniel Roxbury, Thomas V Galassi, Leila Akkari, Christopher P Horoszko, David B Iaea, Januka Budhathoki-Uprety, Nina Pipalia, Abigail S Haka, Jackson D Harvey, Jeetain Mittal, Frederick R Maxfield, Johanna A Joyce, Daniel A Heller
Lipid accumulation within the lumen of endolysosomal vesicles is observed in various pathologies including atherosclerosis, liver disease, neurological disorders, lysosomal storage disorders, and cancer. Current methods cannot measure lipid flux specifically within the lysosomal lumen of live cells. We developed an optical reporter, composed of a photoluminescent carbon nanotube of a single chirality, that responds to lipid accumulation via modulation of the nanotube's optical band gap. The engineered nanomaterial, composed of short, single-stranded DNA and a single nanotube chirality, localizes exclusively to the lumen of endolysosomal organelles without adversely affecting cell viability or proliferation or organelle morphology, integrity, or function...
September 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/28884000/catabolic-and-anabolic-faces-of-insulin-resistance-and-their-disorders-a-new-insight-into-circadian-control-of-metabolic-disorders-leading-to-diabetes
#14
REVIEW
Polina M Schwartsburd
Maintenance of glucose homeostasis during circadian behavioral cycles is critical. The processes controlling the switch between predominant lipolysis/fatty oxidation during fasting and predominant lipid storage/glucose oxidation following feeding are determined principally by insulin. Chronic elevated threshold of insulin resistance (IR) is a key pathological feature of obesity, Type 2 diabetes, sepsis and cancer cachexia; however, a temporal reduced threshold of IR is widely met in fasting/hibernation, pregnancy, antibacterial immunity, exercise and stress...
August 2017: Future Science OA
https://www.readbyqxmd.com/read/28883835/an-overview-of-lipid-droplets-in-cancer-and-cancer-stem-cells
#15
REVIEW
L Tirinato, F Pagliari, T Limongi, M Marini, A Falqui, J Seco, P Candeloro, C Liberale, E Di Fabrizio
For decades, lipid droplets have been considered as the main cellular organelles involved in the fat storage, because of their lipid composition. However, in recent years, some new and totally unexpected roles have been discovered for them: (i) they are active sites for synthesis and storage of inflammatory mediators, and (ii) they are key players in cancer cells and tissues, especially in cancer stem cells. In this review, we summarize the main concepts related to the lipid droplet structure and function and their involvement in inflammatory and cancer processes...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28880480/monoacylglycerol-signalling-and-abhd6-in-health-and-disease
#16
REVIEW
Pegah Poursharifi, Sri Ramachandra Murthy Madiraju, Marc Prentki
Lipid metabolism dysregulation underlies chronic pathologies such as obesity, diabetes and cancer. Besides their role in structure and energy storage, lipids are also important signalling molecules regulating multiple biological functions. Thus, understanding the precise lipid metabolism enzymatic steps that are altered in some pathological conditions is helpful for designing better treatment strategies. Several monoacylglycerol (MAG) species are only recently being recognized as signalling lipid molecules in different tissues...
September 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28877685/positive-regulation-of-prostate-cancer-cell-growth-by-lipid-droplet-forming-and-processing-enzymes-dgat1-and-abhd5
#17
Ranjana Mitra, Thuc T Le, Priyatham Gorjala, Oscar B Goodman
BACKGROUND: Neoplastic cells proliferate rapidly and obtain requisite building blocks by reprogramming metabolic pathways that favor growth. Previously, we observed that prostate cancer cells uptake and store lipids in the form of lipid droplets, providing building blocks for membrane synthesis, to facilitate proliferation and growth. Mechanisms of lipid uptake, lipid droplet dynamics and their contribution to cancer growth have yet to be defined. This work is focused on elucidating the prostate cancer-specific modifications in lipid storage pathways so that these modified gene products can be identified and therapeutically targeted...
September 6, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28827316/rnf20-suppresses-tumorigenesis-by-inhibiting-srebp1c-pttg1-axis-in-kidney-cancer
#18
Jae Ho Lee, Yong Geun Jeon, Kyoung-Hwa Lee, Hye Won Lee, Jeu Park, Hagoon Jang, Minyong Kang, Hye Sun Lee, Hee Jin Cho, Do-Hyun Nam, Cheol Kwak, Jae Bum Kim
Elevated lipid metabolism promotes cancer cell proliferation. Clear cell renal cell carcinoma (ccRCC) is the most common subtype of kidney cancers, characterized by ectopic lipid accumulation. However, the relationship between aberrant lipid metabolism and tumorigenesis in ccRCC is not thoroughly understood. Here, we demonstrate that ring finger protein 20 (RNF20) acts as a tumor suppressor in ccRCC. RNF20 overexpression repressed lipogenesis and cell proliferation by inhibiting sterol regulatory element-binding protein 1c (SREBP1c), and SREBP1 suppression by either knockdown or the pharmacological inhibitor betulin attenuated proliferation and cell cycle progression in ccRCC cells...
August 21, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28753317/natural-particulates-inspired-specific-targeted-codelivery-of-sirna-and-paclitaxel-for-collaborative-antitumor-therapy
#19
Ruoning Wang, Ziqiang Zhao, Yue Han, Shihao Hu, Yaw Opoku-Damoah, Jianping Zhou, Lifang Yin, Yang Ding
The effective combination of drugs promoting antiangiogenesis and apoptosis effects has proven to be a promising collaborative tumor antidote; and the codelivery of small interfering RNA (siRNA) and chemotherapy agents within one efficient vehicle has gained more attention over single regimen administration. Herein, vascular endothelial growth factor specific siRNA (siVEGF) and paclitaxel (PTX) were introduced as therapeutic companions and coencapsulated into naturally mimic high-density lipoproteins (rHDL/siVEGF-PTX), so that various mechanisms of treatment can occur simultaneously...
August 14, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28723673/energy-metabolism-in-glioblastoma-stem-cells-ppar%C3%AE-a-metabolic-adaptor-to-intratumoral-microenvironment
#20
Alessia Fidoamore, Loredana Cristiano, Chiara Laezza, Renato Galzio, Elisabetta Benedetti, Benedetta Cinque, Andrea Antonosante, Michele d'Angelo, Vanessa Castelli, Maria Grazia Cifone, Rodolfo Ippoliti, Antonio Giordano, Annamaria Cimini
Glioblastoma (GB), the most-common cancer in the adult brain, despite surgery and radio/ chemotherapy, is to date almost incurable. Many hypoxic tumors, including GB, show metabolic reprogramming to sustain uncontrolled proliferation, hypoxic conditions and angiogenesis. Peroxisome Proliferator-activated Receptors (PPAR), particularly the α isotype, have been involved in the control of energetic metabolism. Herein, we characterized patient-derived GB neurospheres focusing on their energetic metabolism and PPARα expression...
July 7, 2017: Oncotarget
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