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https://www.readbyqxmd.com/read/28100270/pro-inflammation-nf-%C3%AE%C2%BAb-signaling-triggers-a-positive-feedback-via-enhancing-cholesterol-accumulation-in-liver-cancer-cells
#1
Mingyan He, Wenhui Zhang, Yinying Dong, Lishun Wang, Tingting Fang, Wenqing Tang, Bei Lv, Guanglang Chen, Biwei Yang, Peixin Huang, Jinglin Xia
BACKGROUND: Hepatocellular carcinoma (HCC) develops in a complex microenvironment characterized by chronic inflammation. In recent years, cholesterol metabolic abnormalities have been implicated the importance in cancer cell physiology. This study was designed to investigate the relationship between inflammation and cholesterol accumulation in HCC cells. METHODS: Human HCC cells HepG2 and Huh7 were cultured and stimulated with lipopolysaccharide (LPS) for 24 h...
January 18, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28076486/serum-leptin-levens-and-hepatocellular-carcinoma-review-article
#2
Luiza Vitelo Andrighetto, Aline Kirjner Poziomyck
Introduction: Hepatocellular carcinoma is one of the most frequent types of malignant tumors in the world. There is growing evidence of the relationship between it development and obesity. The mechanism that links obesity to cancer is still not fully understood; however, it is essential to the understanding the adipose tissue in metabolic changes related to obesity and hepatocellular carcinoma. Objective: To review the influence of serum leptin levels in patients with hepatocelular carcinoma...
November 2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/28073184/functional-lipidomics-palmitic-acid-impairs-hepatocellular-carcinoma-development-by-modulating-membrane-fluidity-and-glucose-metabolism
#3
Ling Lin, Ying Ding, Yi Wang, Zhenxin Wang, Xuefei Yin, Guoquan Yan, Lei Zhang, Pengyuan Yang, Huali Shen
: Lipids are essential cellular components and energy sources of living organisms, altered lipid composition is increasingly recognized as a signature of cancer. We performed the lipidomic analysis in a series of hepatocellular carcinoma (HCC) cells and identified over 1700 intact lipids originating from 3 major lipid categories. Comparative lipidomic screening revealed 93 significantly changed lipids and decreased palmitic acyl (C16:0)-containing glycerophospholipids (GPs) were positively associated with metastatic abilities of HCC cells...
January 10, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28069382/antibiotic-tigecycline-enhances-cisplatin-activity-against-human-hepatocellular-carcinoma-through-inducing-mitochondrial-dysfunction-and-oxidative-damage
#4
Jun Tan, Meijun Song, Mi Zhou, Yaoren Hu
Targeting mitochondrial metabolism has been recently demonstrated to be a promising therapeutic strategy for the treatment of various cancer. In this work, we demonstrate that antibiotic tigecycline is selectively against hepatocellular carcinoma (HCC) through inducing mitochondrial dysfunction and oxidative damage. Tigecycline is more effective in inhibiting proliferation and inducing apoptosis of HCC than normal liver cells. Importantly, tigecycline significantly enhances the inhibitory effects of chemotherapeutic drug cisplatin in HCC in vitro and in vivo...
January 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28063505/alternative-treatment-methods-attenuate-the-development-of-nafld-a-review-of-resveratrol-molecular-mechanisms-and-clinical-trials
#5
REVIEW
Tomasz Charytoniuk, Krzysztof Drygalski, Karolina Konstantynowicz-Nowicka, Klaudia Berk, Adrian Chabowski
Nonalcoholic fatty liver disease (NAFLD) is considered to be one of the most common liver pathologies that occur widely among societies with a predominance of the Western dietary pattern. NAFLD may progress from hepatic steatosis to nonalcoholic steatohepatitis (NASH), subsequently leading to cirrhosis and becoming a major cause of hepatocellular carcinoma. Thus its prevention and therapy play an important role in hepatology. To our knowledge, there is no effective treatment for patients with NAFLD. The aim of this review was to summarize the results of recent alternative treatment studies conducted both on cell cultures and in vivo that concern molecular effects of resveratrol (3,5,4'-trihydroxystilbene) in the treatment of NAFLD...
February 2017: Nutrition
https://www.readbyqxmd.com/read/28060739/a-novel-micrornas-expression-signature-for-hepatocellular-carcinoma-diagnosis-and-prognosis
#6
Mengxuan Lu, Xia Kong, Huaigao Wang, Guoliang Huang, Caiguo Ye, Zhiwei He
This study aims to identify prognostic microRNAs (miRNAs) biomarkers for diagnosis and survival of hepatocellular carcinoma (HCC) based on large patients cohort analysis. HCC patient cohort data were downloaded from The Cancer Genome Atlas, including paired HCC and adjacent non-cancer tissues. Receiver operating characteristic curve method was used to classify cancer and non-cancer tissues according to microRNAs expression levels. The aberrant microRNAs expression level were ranked and risked for building a prognostic miRNAs signature model...
January 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28053598/regulation-of-the-hypoxic-tumor-environment-in-hepatocellular-carcinoma-using-rna-interference
#7
REVIEW
Sung Hoon Choi, Jun Yong Park
OBJECTIVES: Hypoxia is the condition where tumor cells have been deprived of oxygen and has been shown to have a role of tumor development in the hepatocellular carcinoma (HCC). METHODS: Using PubMed online database and Google scholar web site, the terms "angiogenesis", "apoptosis", "RNA interference" and/or "hepatocellular carcinoma (HCC)" were searched and analyzed. RESULTS: The hypoxia inducible factors (HIFs) are transcriptional regulators that affect a homeostatic response to oxidative stress and have been identified as a key transcription activator of angiogenesis, survival, and metabolism...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28053338/autophagy-in-the-liver-functions-in-health-and-disease
#8
REVIEW
Takashi Ueno, Masaaki Komatsu
The concept of macroautophagy was established in 1963, soon after the discovery of lysosomes in rat liver. Over the 50 years since, studies of liver autophagy have produced many important findings. The liver is rich in lysosomes and possesses high levels of metabolic-stress-induced autophagy, which is precisely regulated by concentrations of hormones and amino acids. Liver autophagy provides starved cells with amino acids, glucose and free fatty acids for use in energy production and synthesis of new macromolecules, and also controls the quality and quantity of organelles such as mitochondria...
January 5, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28052632/impact-of-hepatitis-c-virus-therapy-on-metabolism-and-public-health
#9
REVIEW
Mitchell L Shiffman, Nadege T Gunn
Chronic hepatitis C virus (HCV) is associated with insulin resistance (IR) and leads to type 2 diabetes mellitus (T2DM) and hepatic steatosis in many patients. These metabolic complications of HCV have been shown to accelerate the progression of fibrosis to cirrhosis and increase the risk of hepatocellular carcinoma. The metabolic syndrome is a common disorder that also includes IR, T2DM and hepatic steatosis. Approximately 20%-30% of patients with chronic HCV also have co-existent metabolic syndrome. The cause of steatosis in patients with the features of both the metabolic syndrome and chronic HCV is sometime difficult to determine...
January 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28052624/the-epidemiology-of-non-alcoholic-fatty-liver-disease
#10
REVIEW
Stefano Bellentani
The increase in Non-alcoholic Fatty Liver Disease (NAFLD) and the imminent disappearance of chronic viral hepatitis thanks to new and effective therapies is motivating hepatologists to change their clinical approach to chronic liver disease. NAFLD-cirrhosis or NAFLD-Hepatocellular Carcinoma (HCC) are now the second cause of liver transplantation in the USA. This short-review is focused to the epidemiology of NAFLD/Non-alchoholic Steatohepatitis (NASH), including the definition of this disease which should be revised as well discussing the prevalence, risk factors for progression, natural history and mortality...
January 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28051253/antioxidant-diet-and-genotyping-as-tools-for-the-prevention-of-liver-disease
#11
R Di Francia, L Rinaldi, M Cillo, E Varriale, G Facchini, C D'Aniello, G Marotta, M Berretta
It is well-known that 75% of risk factors of chronic liver disease (CLD) are related to nutrition. These circumstances potentially progress towards liver steatosis, fibrosis and hepatocellular carcinoma (HCC). It still represents an enormous problem for the economy of public health worldwide. Furthermore, validated prevention programs could be the solution. Recent knowledge in understanding molecular determinants of energy liver metabolism and new genetic markers offers new insights into the pathogenesis of CLD and HCC...
December 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28050580/microarray-data-and-pathway-analyses-for-primary-human-activated-hepatic-stellate-cells-compared-to-hepg2-human-hepatoma-cells
#12
Alexandra M Hetherington, Cynthia G Sawyez, Nica M Borradaile
As nonalcoholic fatty liver disease progresses to end-stage diseases, including fibrosis, cirrhosis and hepatocellular carcinoma, fibrotic activated hepatic stellate cells and cancerous epithelial cells can become abundant, changing the cellular composition of this organ. Despite potentially residing within the same diseased tissue, direct comparisons of global gene expression between activated hepatic stellate cells and hepatocellular carcinoma cells are lacking. Here we provide data collected using Affymetrix GeneChip microarrays to identify differential gene expression in cultured primary human activated hepatic stellate cells compared to HepG2 human hepatoma cells...
February 2017: Data in Brief
https://www.readbyqxmd.com/read/28049764/the-scf%C3%AE-trcp-e3-ubiquitin-ligase-complex-targets-lipin1-for-ubiquitination-and-degradation-to-promote-hepatic-lipogenesis
#13
Kouhei Shimizu, Hidefumi Fukushima, Kohei Ogura, Evan C Lien, Naoe Taira Nihira, Jinfang Zhang, Brian J North, Ailan Guo, Katsuyuki Nagashima, Tadashi Nakagawa, Seira Hoshikawa, Asami Watahiki, Koji Okabe, Aya Yamada, Alex Toker, John M Asara, Satoshi Fukumoto, Keiichi I Nakayama, Keiko Nakayama, Hiroyuki Inuzuka, Wenyi Wei
The SCF(β-TRCP) E3 ubiquitin ligase complex plays pivotal roles in normal cellular physiology and in pathophysiological conditions. Identification of β-transducin repeat-containing protein (β-TRCP) substrates is therefore critical to understand SCF(β-TRCP) biology and function. We used a β-TRCP-phosphodegron motif-specific antibody in a β-TRCP substrate screen coupled with tandem mass spectrometry and identified multiple β-TRCP substrates. One of these substrates was Lipin1, an enzyme and suppressor of the family of sterol regulatory element-binding protein (SREBP) transcription factors, which activate genes encoding lipogenic factors...
January 3, 2017: Science Signaling
https://www.readbyqxmd.com/read/28043790/thymidylate-synthase-gene-polymorphisms-as-important-contributors-affecting-hepatocellular-carcinoma-prognosis
#14
X Wang, X Sun, X Du, F Zhou, F Yang, J Xing, G Dong, X Guo
BACKGROUND: Thymidylate synthase (TYMS), a key rate-limiting enzyme in the folate metabolism, plays essential roles in the development of several malignancies including hepatocellular carcinoma (HCC). Nonetheless, the association of the single nucleotide polymorphisms (SNPs) in TYMS gene with the prognosis of Chinese HCC patients remains unknown. METHODS: A total of 492 HCC patients who underwent surgery treatment were included in this study. Five functional SNPs (rs2847153, rs2853533, rs502396, rs523230, and rs9967368) in TYMS gene were genotyped using the iPLEX genotyping system...
December 30, 2016: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28036299/v-atpase-inhibition-increases-cancer-cell-stiffness-and-blocks-membrane-related-ras-signaling-a-new-option-for-hcc-therapy
#15
Karin Bartel, Maria Winzi, Melanie Ulrich, Andreas Koeberle, Dirk Menche, Oliver Werz, Rolf Müller, Jochen Guck, Angelika M Vollmar, Karin von Schwarzenberg
Hepatocellular carcinoma (HCC) is the fifth most frequent cancer worldwide and the third leading cause of cancer-related death. However, therapy options are limited leaving an urgent need to develop new strategies. Currently, targeting cancer cell lipid and cholesterol metabolism is gaining interest especially regarding HCC. High cholesterol levels support proliferation, membrane-related mitogenic signaling and increase cell softness, leading to tumor progression, malignancy and invasive potential. However, effective ways to target cholesterol metabolism for cancer therapy are still missing...
December 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/28035420/argininosuccinate-lyase-interacts-with-cyclin-a2-in-cytoplasm-and-modulates-growth-of-liver-tumor-cells
#16
Yu-Hsuan Hung, Hau-Lun Huang, Wei-Ching Chen, Meng-Chi Yen, Chien-Yu Cho, Tzu-Yang Weng, Chih-Yang Wang, Yi-Ling Chen, Li-Tzong Chen, Ming-Derg Lai
Arginine is a critical amino acid in specific cancer types including hepatocellular carcinoma (HCC) and melanoma. Novel molecular mechanisms and therapeutic targets in arginine metabolism-mediated cancer formation await further identification. Our laboratory has previously demonstrated that arginine metabolic enzyme argininosuccinate lyase (ASL) promoted HCC formation in part via maintenance of cyclin A2 protein expression and arginine production for channeling to nitric oxide synthase. In this study, we investigated the mechanism by which ASL regulates cyclin A2 expression...
February 2017: Oncology Reports
https://www.readbyqxmd.com/read/28035405/identifying-the-optimal-gene-and-gene-set-in-hepatocellular-carcinoma-based-on-differential-expression-and-differential-co-expression-algorithm
#17
Li-Yang Dong, Wei-Zhong Zhou, Jun-Wei Ni, Wei Xiang, Wen-Hao Hu, Chang Yu, Hai-Yan Li
The objective of this study was to identify the optimal gene and gene set for hepatocellular carcinoma (HCC) utilizing differential expression and differential co-expression (DEDC) algorithm. The DEDC algorithm consisted of four parts: calculating differential expression (DE) by absolute t-value in t-statistics; computing differential co-expression (DC) based on Z-test; determining optimal thresholds on the basis of Chi-squared (χ2) maximization and the corresponding gene was the optimal gene; and evaluating functional relevance of genes categorized into different partitions to determine the optimal gene set with highest mean minimum functional information (FI) gain (Δ*G)...
February 2017: Oncology Reports
https://www.readbyqxmd.com/read/28030819/hyperhomocysteinemia-results-from-and-promotes-hepatocellular-carcinoma-via-cyp450-metabolism-by-cyp2j2-dna-methylation
#18
Donghong Zhang, Jinli Lou, Xu Zhang, Lin Zhang, Fei Wang, Danfei Xu, Na Niu, Yidong Wang, Yue Wu, Wei Cui
Hyperhomocysteinemia (HHcy) can result from liver disease or dysfunction and further alters intracellular lipid metabolism. Cytochrome P450 (CYP) arachidonic acid epoxygenases are expressed in human cancers and promote cancer metastasis. This study explored the interaction of Hcy and CYP450 metabolism in hepatocellular carcinoma (HCC). The levels of 4-epoxyeicosatrienoic acid (EET) isomers and their generative enzyme CYP2J2 level as well as intracellular Hcy level were higher in 42 cases of HCC than in paired non-tumor tissue...
December 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/28027934/histone-modifications-in-fasn-modulated-by-sterol-regulatory-element-binding-protein-1c-and-carbohydrate-responsive-element-binding-protein-under-insulin-stimulation-are-related-to-nafld
#19
Wei Shen, Xuan Du, Can Cai, Jialing Yao, Youping Zhou, Huihong Yu
Non-alcoholic fatty liver disease (NAFLD) and its causal factors of hepatic insulin resistance (IR) and type 2 diabetes are rapidly growing worldwide. Developing new therapeutic methods for these conditions requires a comprehensive understanding between hepatic lipid metabolism and IR. Sterol regulatory element-binding transcription factor 1c (SREBP-1c) and carbohydrate responsive-element binding protein (ChREBP) are the major regulators of fatty acid synthase (FASN), a key enzyme of de novo fatty acid synthesis...
December 24, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28027595/inhibition-of-the-srebp-pathway-suppresses-hepatocellular-carcinoma-through-repressing-inflammation
#20
Na Li, Zhang-Sen Zhou, Yang Shen, Jie Xu, Hong-Hua Miao, Ying Xiong, Feng Xu, Bo-Liang Li, Jie Luo, Bao-Liang Song
: Obesity is a critical risk factor for hepatocellular carcinoma (HCC). However, it remains unknown whether inhibition of de novo lipid biosynthesis can suppress HCC. In this study, we blocked the sterol regulatory element binding protein (SREBP) pathway, one of the key determinants of lipid homeostasis, by ablating gp78 or SCAP in hepatocytes as well as by administering a chemical compound called betulin. We found that either genetically or pharmacologically inhibiting the SREBP pathway dramatically reduced diethylnitrosamine (DEN)-induced HCC progression through down-regulating tumor promoting cytokines including IL-6, TNF-α and IL-1β...
December 27, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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