AAS ›› 2013, Vol. 44 ›› Issue (5 ): 635-640.doi: 10.3969/j.issn.0529-1356.2013.05.010

Previous Articles     Next Articles

Effects of nitric oxide on netrin-1 expression and migration of astrocytes

SHI Yue  ZHANG Ye  SHAO Jie  YAO Yang-ming  XIA Chun-lin*   

  1. Boxi Institute of Clinical Anatomy and Cytoneurobiology Laboratory, Medical College of Soochow University, Suzhou 215123, China
  • Received:2012-07-09 Revised:2012-09-20 Online:2013-10-06 Published:2013-10-06

Abstract:

Objective To investigate effects of NO on netrin-1 expression and migration of astrocytes. Methods Astrocytes were treated with a certain concentration of NO donor sodium nitroprusside (SNP) in vitro.The astrocyte migration was observed and the expression of netrin-1 at the different times after treatment was detected. Purified cultures of astrocytes were prepared from neonatal rats, based on the differential properties of developmental time-course and cellular adhesions. Astrocytes were inoculated to culture plates and were divided into experimental and control groups (n=6).The experimental groups were treated with 50μmol/L NO donor SNP. Cell migration was observed by scratching. The expression of netrin-1 after treatment was examined by Western blotting and immunocytochemistry. Results The speed of astrocyte migration increased after SNP treatment. The expression of netrin-1 in the protein level began to increase at 6 hours and reached the peak at 48 hours, compared with the control group (P<0.01), and then declined. Conclusion SNP may increase the expression of netrin-1 protein and promote astrocytes migration, indicating that netrin-1 promoting astrocytes migration maybe controled by NO.

Key words: Astrocyte, Netrin-1, Nitric oxide, Cell migration, Western blotting, Rat