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Hepatocyte proliferation

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https://www.readbyqxmd.com/read/28815768/micro-vesicles-derived-from-human-wharton-s-jelly-mesenchymal-stromal-cells-mitigate-renal-ischemia-reperfusion-injury-in-rats-after-cardiac-death-renal-transplantation
#1
Xiaoqiang Wu, Tianzhong Yan, Zhiwei Wang, Xuan Wu, Guanghui Cao, Chan Zhang, Xiangyong Tian, Junpeng Wang
OBJECTIVES: The purpose of the present study was to investigate the possible therapeutic effects of the human Wharton-Jelly mesenchymal stromal cells derived micro-vesicles (hWJMSCs-MVs) on renal ischemia-reperfusion injury (IRI) after cardiac death (CD) renal transplantation in rats. METHODS: MVs were injected intravenously in rats immediately after renal transplantation. The animals were sacrificed at 24 h, 48 h, 1 and 2 weeks post-transplantation. ELISA was used to determine the von Willebrand Factor (vWF), tumore necrosis factor (TNF)-α and interleukin (IL)-10 levels in the serum...
August 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28809727/models-of-non-alcoholic-fatty-liver-disease-and-potential-translational-value-the-effects-of-3-5-l-diiodothyronine
#2
Elena Grasselli, Laura Canesi, Piero Portincasa, Adriana Voci, Laura Vergani, Ilaria Demori
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disorder in industrialized countries and is associated with increased risk of cardiovascular, hepatic and metabolic diseases. Molecular mechanisms on the root of the disrupted lipid homeostasis in NAFLD and potential therapeutic strategies can benefit of in vivo and in vitro experimental models of fatty liver. Here, we describe the high fat diet (HFD)-fed rat in vivo model, and two in vitro models, the primary cultured rat fatty hepatocytes or the FaO rat hepatoma fatty cells, mimicking human NAFLD...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28808340/kr%C3%A3-ppel-like-factor-6-is-a-transcriptional-activator-of-autophagy-in-acute-liver-injury
#3
Svenja Sydor, Paul Manka, Jan Best, Sami Jafoui, Jan-Peter Sowa, Miguel Eugenio Zoubek, Virginia Hernandez-Gea, Francisco Javier Cubero, Julia Kälsch, Diana Vetter, Maria Isabel Fiel, Yujin Hoshida, C Billie Bian, Leonard J Nelson, Han Moshage, Klaas Nico Faber, Andreas Paul, Hideo A Baba, Guido Gerken, Scott L Friedman, Ali Canbay, Lars P Bechmann
Krüppel-like factor 6 (KLF6) is a transcription factor and tumor suppressor. We previously identified KLF6 as mediator of hepatocyte glucose and lipid homeostasis. The loss or reduction of KLF6 is linked to the progression of hepatocellular carcinoma, but its contribution to liver regeneration and repair in acute liver injury are lacking so far. Here we explore the role of KLF6 in acute liver injury models in mice, and in patients with acute liver failure (ALF). KLF6 was induced in hepatocytes in ALF, and in both acetaminophen (APAP)- and carbon tetrachloride (CCl4)-treated mice...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807594/thyroid-hormone-receptor-beta-agonist-gc-1-inhibits-met-%C3%AE-catenin-driven-hepatocellular-cancer
#4
Elisabetta Puliga, Qian Min, Junyan Tao, Rong Zhang, Tirthadipa Pradhan-Sundd, Minakshi Poddar, Sucha Singh, Amedeo Columbano, Jinming Yu, Satdarshan P Monga
The thyromimetic agent GC-1 induces hepatocyte proliferation via Wnt/β-catenin signaling and may promoting regeneration in both acute and chronic liver insufficiencies. However, β-catenin activation particularly due to mutations in CTNNB1 is seen in a subset of hepatocellular carcinomas (HCC). Thus, it will be critical to address any effect of GC-1 on HCC growth and development, before its use can be advocated to stimulate regeneration in chronic liver diseases. In the current study, we first examine the effect of GC-1 on β-catenin-TCF4 activity in HCC cell lines harboring wild-type or mutated-CTNNB1...
August 11, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28807057/inhibitory-effects-of-hnf4%C3%AE-on-migration-maltransformation-of-hepatic-progenitors-hnf4%C3%AE-overexpressing-hepatic-progenitors-for-liver-repopulation
#5
Ping Wang, Min Cong, Tianhui Liu, Hufeng Xu, Lin Wang, Guangyong Sun, Aiting Yang, Dong Zhang, Jian Huang, Yameng Sun, Wenshan Zhao, Hong Ma, Jidong Jia, Hong You
BACKGROUND: Although they are expandable in vitro, hepatic progenitors are immature cells and share many immunomarkers with hepatocellular carcinoma, raising potential concerns regarding maltransformation after transplantation. This study investigated the effects of hepatic nuclear factor (HNF) 4α on the proliferation, migration, and maltransformation of hepatic progenitors and determined the feasibility of using these manipulated cells for transplantation. METHODS: The effects of HNF4α on rat hepatic progenitors (i...
August 14, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28804442/mesozeaxanthin-protects-the-liver-and-reduces-cardio-metabolic-risk-factors-in-an-insulin-resistant-rodent-model
#6
Kazim Sahin, Cemal Orhan, Fatih Akdemir, Mehmet Tuzcu, Nurhan Sahin, Ismet Yilmaz, Shakir Ali, Jayant Deshpande, Vijaya Juturu
Background: Mesozeaxanthin (MZ) is a macular carotenoid which has been reported to have a number of pharmacological properties, including the antioxidant, and anticarcinogenic property, and has been stated to decrease the hepatocyte lipid content. Objective: In this study, we investigated the effect of MZ on cardio-metabolic health risk (CMHR) and its probable mechanisms of action in rats fed a high-fat diet (HFD). Design: Rats were randomly divided into four groups consisting of (i) Control, (ii) MZ, (iii) HFD, and (iv) HFD+MZ...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28795454/the-tcf7l2-pgc1%C3%AE-axis-connects-mitochondrial-biogenesis-and-metabolic-shift-with-stem-cell-commitment-to-hepatic-differentiation
#7
Anaïs Wanet, Marino Caruso, Jean-Baka Domelevo Entfellner, Mehdi Najar, Antoine Fattaccioli, Catherine Demazy, Jonathan Evraerts, Hoda El-Kehdy, Guillaume Pourcher, Etienne Sokal, Thierry Arnould, Nicki Tiffin, Mustapha Najimi, Patricia Renard
Increasing evidence supports that modifications in the mitochondrial content, oxidative phosphorylation (OXPHOS) activity, and cell metabolism influence the fate of stem cells. However, the regulators involved in the crosstalk between mitochondria and stem cell fate remain poorly characterized. Here, we identified a transcriptional regulatory axis, composed of TCF7L2 (transcription factor 7 like 2, a downstream effector of the Wnt/β-catenin pathway, repressed during differentiation) and PGC-1α (peroxisome proliferator-activated receptor gamma coactivator 1 alpha, the master regulator of mitochondrial biogenesis, induced during differentiation), coupling the loss of pluripotency and early commitment to differentiation, to the initiation of mitochondrial biogenesis and metabolic shift toward OXPHOS...
August 10, 2017: Stem Cells
https://www.readbyqxmd.com/read/28794048/hepatitis-c-virus-core-protein-modulates-endoglin-cd105-signaling-pathway-for-liver-pathogenesis
#8
Young-Chan Kwon, Reina Sasaki, Keith Meyer, Ranjit Ray
Endoglin is part of the TGF-β receptor complex and has a crucial role in fibrogenesis and angiogenesis. It is also an important protein for tumor growth, survival, and cancer cell metastasis. In our previous study, we have shown that hepatitis C virus (HCV) infection induces epithelial-mesenchymal transition state (EMT) and cancer stem-like cell (CSC) properties in human hepatocytes. Our array data suggested that endoglin (CD105) mRNA is significantly upregulated in HCV associated CSCs. In this study, we have observed increased endoglin expression on the cell surface of HCV core expressing hepatocellular carcinoma (HepG2) cell line or immortalized human hepatocytes (IHH) and activation of its downstream signaling molecules...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28791765/effects-of-gelling-bath-on-the-physical-properties-of-alginate-gel-beads-and-the-biological-characteristics-of-entrapped-hepg2-cells
#9
Dongsheng Sun, Yang Liu, Hao Wu, Ying Ren, Xiaojun Ma, Huijian Wu, Guangwei Sun
Optimizing alginate gel beads is necessary to support the survival, proliferation, and function of entrapped hepatocytes. In this study, gelling bath was modified by decreasing calcium ion concentration and increasing sodium ion concentration. Alginate gel beads (using 36% G sodium alginate) prepared in the modified gelling bath had more homogeneous structure and better mass transfer properties compared with the traditional gelling bath that contains only calcium ions. Moreover, Alginate gel beads generated in the modified gelling bath could significantly promote the HepG2 cell proliferation and the growth of cell spheroids, and maintain the albumin secretion ability similar to alginate gel beads prepared in the traditional gelling bath with only calcium ions...
August 9, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28790850/emodin-suppresses-proliferation-migration-and-invasion-in-ovarian-cancer-cells-by-down-regulating-ilk-in-vitro-and-in-vivo
#10
Jingjing Lu, Ying Xu, Zhe Zhao, Xiaoning Ke, Xuan Wei, Jia Kang, Xuan Zong, Hongluan Mao, Peishu Liu
OBJECTIVE: Although our previous studies have confirmed that 1, 3, 8-trihydroxy-6-methylant hraquinone (emodin) inhibits migration and invasion in epithelial ovarian cancer (EOC) cells, the underlying molecular mechanism remains unknown. Here, the aim was to investigate the effects of emodin on EOC cells and to study further the mechanism underlying this process, both in vitro and in vivo. MATERIALS AND METHODS: Cell proliferation was evaluated by the methylthiazolyl tetrazolium assay...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28790176/impaired-liver-regeneration-after-hepatectomy-and-bleeding-is-associated-with-a-shift-from-hepatocyte-proliferation-to-hypertrophy
#11
Idit Matot, Nathalie Nachmansson, Omri Duev, Susanne Schulz, Katrin Schroeder-Stein, Stilla Frede, Rinat Abramovitch
Extensive liver resections are common, and bleeding is frequent in these operations. Impaired regeneration after partial hepatectomy (PHx) may contribute to liver failure. We thus assessed the impact of acute bleeding on the liver regeneration progress after PHx and explored possible contributing molecular mechanisms. In rats, the regeneration progress was delayed and attenuated with PHx and bleeding and was not restored with colloid resuscitation. Livers restored their initial volume by postoperative day (POD) 2 after PHx through hepatocyte proliferation vs...
August 8, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28783584/neat1-promotes-cell-proliferation-and-invasion-in-hepatocellular-carcinoma-by-negative-regulating-mir-613-expression
#12
Zhiming Wang, Qingtao Zou, Mu Song, Jing Chen
BACKGROUND: Long non-coding RNA nuclear-enriched abundant transcript 1 (NEAT1) was found to be participated in tumorigenesis in various cancers including hepatocellular carcinoma (HCC). However, the clinical implication and underling function of NEAT1 in HCC have not been fully known. METHODS: The relative NEAT1 expression was examined by qRT-PCR in HCC tissues and cells, compared with adjacent normal tissues and normal human hepatocyte (LO2) cells, respectively...
August 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28780159/pyridine-pyrimidine-amides-that-prevent-hgf-induced-epithelial-scattering-by-two-distinct-mechanisms
#13
Adam Siddiqui-Jain, Jacob P Hoj, J Blade Hargiss, Taylor H Hoj, Carter J Payne, Collin A Ritchie, Steven R Herron, Colette Quinn, Jeffrey T Schuler, Marc D H Hansen
Stimulation of cultured epithelial cells with scatter factor/hepatocyte growth factor (HGF) results in individual cells detaching and assuming a migratory and invasive phenotype. Epithelial scattering recapitulates cancer progression and studies have implicated HGF signaling as a driver of cancer metastasis. Inhibitors of HGF signaling have been proposed to act as anti-cancer agents. We previously screened a small molecule library for compounds that block HGF-induced epithelial scattering. Most hits identified in this screen exhibit anti-mitotic properties...
July 25, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28777941/cholangiocytes-no-longer-cinderellas-to-the-hepatic-regenerative-response
#14
Malcolm R Alison
Biliary ductal cells proliferate from the portal areas of chronically damaged livers, but their significance to regeneration has been controversial. A recent article in Nature by Raven et al. (2017) now shows that blocking hepatocyte replication is essential for the hepatic differentiation of ductular cells after liver damage.
August 3, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28769978/ultrastructural-characteristics-of-rat-hepatic-oval-cells-and-their-intercellular-contacts-in-the-model-of-biliary-fibrosis-new-insights-into-experimental-liver-fibrogenesis
#15
Joanna Maria Lotowska, Maria Elzbieta Sobaniec-Lotowska, Dariusz Marek Lebensztejn, Urszula Daniluk, Piotr Sobaniec, Krzysztof Sendrowski, Jaroslaw Daniluk, Joanna Reszec, Wojciech Debek
PURPOSE: Recently, it has been emphasized that hepatic progenitor/oval cells (HPCs) are significantly involved in liver fibrogenesis. We evaluated the multipotential population of HPCs by transmission electron microscope (TEM), including relations with adherent hepatic nonparenchymal cells (NPCs) in rats with biliary fibrosis induced by bile duct ligation (BDL). METHODS: The study used 6-week-old Wistar Crl: WI(Han) rats after BDL for 1, 6, and 8 weeks. RESULTS: Current ultrastructural analysis showed considerable proliferation of HPCs in experimental intensive biliary fibrosis...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28768434/metabolic-reprogramming-during-hepatitis-b-disease-progression-offers-novel-diagnostic-and-therapeutic-opportunities
#16
REVIEW
Jesse Jr Masson, Hugh Ww Billings, Clovis S Palmer
Metabolic remodeling occurs in immune cells during an infection. Host cells must upregulate energy production for growth, proliferation, and effector functions to limit the damage imposed by pathogens. One example, the hepatitis B virus, induces hepatic injury in human hepatocytes through dysregulation of aerobic glycolysis and lipid metabolism. Increased glycolytic metabolism mediated by elevated expression of Glut1, glucose influx, and lactate secretion is associated with this Warburg phenotype, a classic metabolic signature also observed in cancer cells...
August 2017: Antiviral Chemistry & Chemotherapy
https://www.readbyqxmd.com/read/28763860/-role-of-enolase-1-in-hepatocellular-carcinoma-and-possible-mechanism
#17
T T Yan, L N Ma, X Luo, Z H Lu, Q Liu, Y H Xu, X L Liu, X C Ding
Objective: To investigate the role of enolase 1 (ENO1) in hepatocellular carcinoma (HCC) and possible mechanism. Methods: Real-time PCR and Western blot were used to measure the expression of ENO1 in HCC tissue, adjacent tissue, hepatoma cells, and normal hepatocytes. The siRNA interference technique was used for ENO1 knockout in HepG2 cells, and then CCK-8, colony formation assay, and transwell assay were used to measure the proliferation, migration, and invasion abilities of HepG2 cells. Real-time PCR and Western blot were used to measure the expression of proteins and genes involved in the activation of the Notch signaling pathway...
June 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28758902/gata4-loss-of-function-in-liver-cancer-impedes-precursor-to-hepatocyte-transition
#18
Francis O Enane, Wai Ho Shuen, Xiaorong Gu, Ebrahem Quteba, Bartlomiej Przychodzen, Hideki Makishima, Juraj Bodo, Joanna Ng, Chit Lai Chee, Rebecca Ba, Lip Seng Koh, Janice Lim, Rachael Cheong, Marissa Teo, Zhenbo Hu, Kwok Peng Ng, Jaroslaw Maciejewski, Tomas Radivoyevitch, Alexander Chung, London Lucien Ooi, Yu Meng Tan, Peng Chung Cheow, Pierce Chow, Chung Yip Chan, Kiat Hon Lim, Lisa Yerian, Eric Hsi, Han Chong Toh, Yogen Saunthararajah
The most frequent chromosomal structural loss in hepatocellular carcinoma (HCC) is of the short arm of chromosome 8 (8p). Genes on the remaining homologous chromosome, however, are not recurrently mutated, and the identity of key 8p tumor-suppressor genes (TSG) is unknown. In this work, analysis of minimal commonly deleted 8p segments to identify candidate TSG implicated GATA4, a master transcription factor driver of hepatocyte epithelial lineage fate. In a murine model, liver-conditional deletion of 1 Gata4 allele to model the haploinsufficiency seen in HCC produced enlarged livers with a gene expression profile of persistent precursor proliferation and failed hepatocyte epithelial differentiation...
July 31, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28757162/an-in%C3%A2-vitro-human-liver-model-by-ipsc-derived-parenchymal-and-non-parenchymal-cells
#19
Yuta Koui, Taketomo Kido, Toshimasa Ito, Hiroki Oyama, Shin-Wei Chen, Yuki Katou, Katsuhiko Shirahige, Atsushi Miyajima
During liver development, hepatoblasts and liver non-parenchymal cells (NPCs) such as liver sinusoidal endothelial cells (LSECs) and hepatic stellate cells (HSCs) constitute the liver bud where they proliferate and differentiate. Accordingly, we reasoned that liver NPCs would support the maturation of hepatocytes derived from human induced pluripotent stem cells (hiPSCs), which usually exhibit limited functions. We found that the transforming growth factor β and Rho signaling pathways, respectively, regulated the proliferation and maturation of LSEC and HSC progenitors isolated from mouse fetal livers...
August 8, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28754919/pre-therapy-liver-transcriptome-landscape-in-indian-and-french-patients-with-severe-alcoholic-hepatitis-and-steroid-responsiveness
#20
Shvetank Sharma, Jaswinder S Maras, Sukanta Das, Shabir Hussain, Ashwani K Mishra, Saggere M Shasthry, Chhagan B Sharma, Emmanuel Weiss, Laure Elkrief, Pierre-Emmanuel Rautou, Hélène Gilgenkrantz, Sophie Lotersztajn, Valérie Paradis, Pierre de la Grange, Christophe Junot, Richard Moreau, Shiv K Sarin
Patients with severe alcoholic hepatitis (SAH) not responding to glucocorticoid therapy have higher mortality, though they do not differ in their baseline clinical characteristics and prognostic scores from those who respond to therapy. We hypothesized that the baseline hepatic gene expression differs between responders (R) and non-responders (NR). Baseline liver transcriptome was compared between R and NR in Indian (16 each) and French (5 NR, 3 R) patients with SAH. There were differentially expressed genes (DEGs) between NR and R, in Indian (1106 over-expressed, 96 under-expressed genes) and French patients (65 over-expressed, 142 under-expressed genes)...
July 28, 2017: Scientific Reports
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