Pubblicazione scientifica

Inhibited Lipophagy Suppresses Lipid Metabolism in Zebrafish Liver Cells

FILONE TECNOLOGICO	TEMA
trasformazione e commercializzazione

RIASSUNTO

Lipophagy degrades lipid droplets (LDs) through the lysosomal degradative pathway, thus plays important roles in regulating lipid metabolism in mammals. However, information on the existence and functions of lipophagy in fish lipid metabolism is still limited. In the present study, we confirmed the existence of lipophagy by observing the structures of LDs sequestered in autophagic vacuoles in the zebrafish liver cell line (ZFL) via electronic microscopy. Moreover, starved cells increased the mRNA expression of the microtubule-associated protein 1A/1B light chain 3 beta (LC3), which is a marker protein for autophagy and protein conversion from LC3-I to LC3-II. Inhibiting autophagy with chloroquine increased significantly the LDs content and decreased fatty acid β-oxidation and esterification activities in the ZFL cells cultured in the fed state. Furthermore, inhibiting autophagy function downregulated the mRNA expression of the genes and their proteins related to lipid metabolism. Altogether, the present study verified the existence of lipophagy and its essential regulatory roles in lipid metabolism in fish cells.

DATA

Data di pubblicazione: 21/08/2019

AUTORI

WANG JING
HAN SI-LAN
LU DONG-LIANG
LI LING-YU
LIMBU SAMWEL MCHELE
LI DONG-LIANG
ZHANG MEI-LING
DU ZHEN-YU

ENTE DI AFFERENZA

LAB OF AQUACULTURE NUTRITION & ENVIRONMENTAL HEALTH SCHOOL OF LIFE SCIENCES EAST CHINA NORMAL UNIV SHANGHAI CHINA
DEPT AQUATIC SCIENCES & FISHERIES TECH UNIV DAR ES SALAAM DAR ES SALAAM TANZANIA

RIVISTA

Frontiers in Physiology, 10, 1077

IMPACT FACTOR

3,160

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