Related Experiment Video
Updated: Jun 27, 2026

Analysis of SCAP N-glycosylation and Trafficking in Human Cells
Published on: November 8, 2016
Glycosphingolipid deficiency increases the sterol regulatory element-mediated gene transcription
Reiko Ishitsuka1, Yoshio Hirabayashi, Toshihide Kobayashi
1Lipid Biology Laboratory, RIKEN (Institute of Physical and Chemical Research) Advanced Science Institute, 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan.
Abstract:
A major feedback mechanism of cholesterol in transcription of cholesterol metabolism-related genes is mediated by sterol regulatory element-binding protein (SREBP). Involvement of glycosphingolipids (GSLs) in the SREBP pathway is unknown. In this study, we examined the effects of GSL depletion on SRE-mediated gene transcription using GSL-defective cells. We found that the content of mature SREBP, the transcriptional active form, is increased in the GSL-defective cells. Transcription of SREBP target genes and cholesterol synthesis are also induced in the GSL-defective cells. These results indicate that GSL deficiency up-regulates the SREBP pathway, pointing out the regulatory role of GSL in cholesterol homeostasis.
Related Concept Videos
Cell Specific Gene Expression
Regulation of Nuclear Protein Sorting
Master Transcription Regulators
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
TGF - β Signaling Pathway
Pleiotropy
