Effect of Insulin on the Differential Expression of VLDL Receptor Isoforms of SGC7901 Cell and Its Biological Implication
10.1007/s11596-010-0541-2
- Author:
CAI ZHEJUN
1
;
LI FEI
;
PENG CHUANMEI
;
LI HE
;
ZONG YIQIANG
;
LIU ZHIGUO
;
QU SHEN
Author Information
1. Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Keywords:
insulin;
very low density lipoprotein receptor;
cell proliferation;
metabolic regulation
- From:
Journal of Huazhong University of Science and Technology (Medical Sciences)
2010;30(5):551-555
- CountryChina
- Language:Chinese
-
Abstract:
This study examined the effect of insulin on the expression of very low density lipoprotein receptor (VLDLR) subtypes of SGC7901 cells and discussed its biological implication. In vitro,moderately or poorly-differentiated human gastric adenocarcinoma cell line SGC7901 was incubated with insulin for different lengths of time, and then the expression of protein and RNA level in VLDLR subtypes were detected by Western blotting and real-time PCR, respectively. The results showed that, at certain time interval, insulin could down-regulate expression of type Ⅰ VLDLR and up-regulate the expression of type Ⅱ VLDLR in SGC7901 cells, at both protein and RNA level.We are led to conclude that insulin serves as a regulator in maintaining the balance between glucose and lipid metabolism in vivo, possibly through its effect on the differential expression of VLDLR subtypes.
