Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice

Abstract Very low-density lipoprotein receptor (VLDLR) is a member of the LDL receptor family that is involved in the uptake of VLDL into cells. Increased hepatic VLDLR under endoplasmic reticulum (ER) stress has been shown to cause fatty liver. In this study, the effect of dietary protein restricti...

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Autores principales: Yui Oshio, Yuta Hattori, Hatsuho Kamata, Yori Ozaki-Masuzawa, Arisa Seki, Yasutaka Tsuruta, Asako Takenaka
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/83eab185ef234a689eddb13e6646223a
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spelling oai:doaj.org-article:83eab185ef234a689eddb13e6646223a2021-12-02T18:03:21ZVery low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice10.1038/s41598-021-87568-22045-2322https://doaj.org/article/83eab185ef234a689eddb13e6646223a2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87568-2https://doaj.org/toc/2045-2322Abstract Very low-density lipoprotein receptor (VLDLR) is a member of the LDL receptor family that is involved in the uptake of VLDL into cells. Increased hepatic VLDLR under endoplasmic reticulum (ER) stress has been shown to cause fatty liver. In this study, the effect of dietary protein restriction on hepatic VLDLR and the role of VLDLR in fatty liver were investigated using Vldlr knockout (KO) mice. Growing wild-type (WT) and KO mice were fed a control diet containing 20% ​​protein or a low protein diet containing 3% protein for 11 days. In WT mice, the amount of hepatic Vldlr mRNA and VLDLR protein increased by approximately 8- and 7-fold, respectively, due to protein restriction. Vldlr mRNA and protein levels increased in both type 1 and type 2 VLDLR. However, neither Vldlr mRNA nor protein levels were significantly increased in heart, muscle, and adipose tissue, demonstrating that VLDLR increase due to protein restriction occurred in a liver-specific manner. Increased liver triglyceride levels during protein restriction occurred in KO mice to the same extent as in WT mice, indicating that increased VLDLR during protein restriction was not the main cause of fatty liver, which was different from the case of ER stress.Yui OshioYuta HattoriHatsuho KamataYori Ozaki-MasuzawaArisa SekiYasutaka TsurutaAsako TakenakaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Yui Oshio
Yuta Hattori
Hatsuho Kamata
Yori Ozaki-Masuzawa
Arisa Seki
Yasutaka Tsuruta
Asako Takenaka
Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
description Abstract Very low-density lipoprotein receptor (VLDLR) is a member of the LDL receptor family that is involved in the uptake of VLDL into cells. Increased hepatic VLDLR under endoplasmic reticulum (ER) stress has been shown to cause fatty liver. In this study, the effect of dietary protein restriction on hepatic VLDLR and the role of VLDLR in fatty liver were investigated using Vldlr knockout (KO) mice. Growing wild-type (WT) and KO mice were fed a control diet containing 20% ​​protein or a low protein diet containing 3% protein for 11 days. In WT mice, the amount of hepatic Vldlr mRNA and VLDLR protein increased by approximately 8- and 7-fold, respectively, due to protein restriction. Vldlr mRNA and protein levels increased in both type 1 and type 2 VLDLR. However, neither Vldlr mRNA nor protein levels were significantly increased in heart, muscle, and adipose tissue, demonstrating that VLDLR increase due to protein restriction occurred in a liver-specific manner. Increased liver triglyceride levels during protein restriction occurred in KO mice to the same extent as in WT mice, indicating that increased VLDLR during protein restriction was not the main cause of fatty liver, which was different from the case of ER stress.
format article
author Yui Oshio
Yuta Hattori
Hatsuho Kamata
Yori Ozaki-Masuzawa
Arisa Seki
Yasutaka Tsuruta
Asako Takenaka
author_facet Yui Oshio
Yuta Hattori
Hatsuho Kamata
Yori Ozaki-Masuzawa
Arisa Seki
Yasutaka Tsuruta
Asako Takenaka
author_sort Yui Oshio
title Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
title_short Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
title_full Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
title_fullStr Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
title_full_unstemmed Very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
title_sort very low-density lipoprotein receptor increases in a liver-specific manner due to protein deficiency but does not affect fatty liver in mice
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/83eab185ef234a689eddb13e6646223a
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