An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development

Alkoholista riippumaton rasvamaksa (NAFLD) on maailman yleisin maksasairaus ja saattaa johtaa kirroosin tai maksasyövän kehittymiseen. Viimeaikaisissa tutkimuksissa suolistosta peräisin olevin bakteerimolekyylien, kuten flagelliinin (FLG) ja lipopolysakkaridien (LPS), rooli rasvamaksan kehittymisess...

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Main Author: Välimäki, Sakari
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Bio- ja ympäristötieteiden laitos, Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2017
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/53840
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author Välimäki, Sakari
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science University of Jyväskylä Jyväskylän yliopisto
author_facet Välimäki, Sakari Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science University of Jyväskylä Jyväskylän yliopisto Välimäki, Sakari Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science University of Jyväskylä Jyväskylän yliopisto
author_sort Välimäki, Sakari
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description Alkoholista riippumaton rasvamaksa (NAFLD) on maailman yleisin maksasairaus ja saattaa johtaa kirroosin tai maksasyövän kehittymiseen. Viimeaikaisissa tutkimuksissa suolistosta peräisin olevin bakteerimolekyylien, kuten flagelliinin (FLG) ja lipopolysakkaridien (LPS), rooli rasvamaksan kehittymisessä on tunnistettu. Nämä molekyylit saattavat vaikuttaa maksaan välillisesti rasvakudoksen kautta toll-like reseptorien (TLR) signaalireittejä aktivoiden. Tässä tutkimuksessa selvitettiin FLG:n ja LPS:n rasvasoluvälitteisiä vaikutuksia HepG2-hepatoomasoluihin. Hypoteesina oli, että FLG ja LPS lisäisivät HepG2 soluissa rasvan kerääntymistä, insuliiniresistenssiä ja tulehdusta, joita mitattiin kvantitatiivisella PCR:llä sekä western blotilla. Tulokset osoittavat, että FLG saattaa vaikuttaa rasvamaksan kehitykseen erityisesti adiposyyttien kautta. Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease in the world, and may lead to development of cirrhosis or hepatocellular carcinoma. Lately the role of molecules from gut-derived bacteria, like flagellin (FLG) and lipopolysaccharides (LPS) in development of NAFLD has been recognized. These molecules could affect the liver indirectly through activation of adipose tissue toll-like receptor (TLR) pathways. In this study the potential adipocyte mediated effects of FLG and LPS on HepG2 hepatoma cells were explored. The hypothesis was that FLG and LPS would increase HepG2 fat accumulation, insulin resistance and inflammation measured with quantitative realtime PCR (qPCR) and western blot. According to the results especially adipocyte mediated FLG could have a role in fatty liver development.
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spellingShingle Välimäki, Sakari An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development alkoholista riippumaton rasvamaksa toll-like reseptori Solu- ja molekyylibiologia Cell and molecular biology 4013 rasvamaksa reseptorit
title An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development
title_full An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development
title_fullStr An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development
title_full_unstemmed An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development
title_short An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development
title_sort in vitro model to study the adipose tissue toll like receptor mediated effects of gut microbiota on non alcoholic fatty liver disease development
title_txtP An in vitro model to study the adipose tissue toll-like receptor -mediated effects of gut microbiota on non-alcoholic fatty liver disease development
topic alkoholista riippumaton rasvamaksa toll-like reseptori Solu- ja molekyylibiologia Cell and molecular biology 4013 rasvamaksa reseptorit
topic_facet 4013 Cell and molecular biology Solu- ja molekyylibiologia alkoholista riippumaton rasvamaksa rasvamaksa reseptorit toll-like reseptori
url https://jyx.jyu.fi/handle/123456789/53840 http://www.urn.fi/URN:NBN:fi:jyu-201705092246
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