Establishment of a cell model of insulin-resistant 3T3-L1 adipocytes.
- Author:
Xu-Qiang NIE
1
;
Jian-Wen YANG
;
Hai-Xia SHI
;
Yu-Jin ZHANG
;
Jian-Yong ZHANG
;
Ka BIAN
Author Information
- Publication Type:Journal Article
- MeSH: 1-Methyl-3-isobutylxanthine; chemistry; 3T3-L1 Cells; Adipocytes; cytology; Animals; Cell Differentiation; Culture Media; chemistry; Dexamethasone; chemistry; Glucose; chemistry; Insulin; chemistry; Insulin Resistance; Mice
- From: Journal of Southern Medical University 2015;35(1):103-108
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the optimal conditions for establishing insulin-resistant 3T3-L1 adipocytes.
METHOSDexamethason (DEX), 3-isobutyl-methylxanthine (IBMX) and different concentrations of insulin (10(-8), 10(-7), and 10(-6) mol·L(-1)) were used to induce 3T3-L1 preadipocytes into mature adipocytes identified by oil red O staining. We established insulin- resistant 3T3-L1 adipocytes cell model (IR-3T3-L1) by exposing the cells to 1µmol·L(-1) DEX, and the changes of glucose concen- tration in the cell culture were determined by glucose oxidase-peroxidase (GOD-POD) assay.
RESULTSTreatment of 3T3-L1 cells with DEX, IBMX and 10(-6) mol·L(-1)) insulin for 9 days resulted in the differentiation of >90% of the cells into mature adipocytes. IR-3T3-L1 cells cultured for 96 h in the culture media containing 1 µmol·L(-1) DEX showed significantly increased glucose consumption (P=0.0003) as compared with the control group at 36 h (P<0.001).
CONCLUSION3T3-L1 cells can be induced into mature adipocytes by exposure to 1 µmol·L(-1) DEX, 0.5 mmol·L(-1) IBMX and 10(-6) mol·L(-1)) insulin. A 96 h exposure to 1 µmol·L(-1) DEX can induce 3T3-L1 adipocytes to acquire insulin resistance that can be maintained for 36 h.
