Effect of cryoprotectant removal by microfluidic chip on developmental capacity of oocytes.
10.7507/1001-5515.201608014
- Author:
Xingyue YI
1
;
Xinli ZHOU
2
;
Yun YANG
1
;
Jianjun DAI
3
;
Defu ZHANG
3
Author Information
1. Institute of Biothermal Technology, University of Shanghai for Science and Technology, Shanghai 200093, P.R.China.
2. Institute of Biothermal Technology, University of Shanghai for Science and Technology, Shanghai 200093, P.R.China.zjulily@163.com.
3. Animal and Veterinary Research Institute, SAAS, Shanghai 201106, P.R.China.
- Publication Type:Journal Article
- Keywords:
cryoprotectants;
dilution protocol;
microfluidic chip;
oocytes
- From:
Journal of Biomedical Engineering
2018;35(1):123-130
- CountryChina
- Language:Chinese
-
Abstract:
In order to reduce osmotic damage and chemical toxicity of cryoprotectants (CPA) to oocytes during unloading process, the microfluidic chip was used to remove CPA from porcine MⅡ oocytes in this study. Firstly, the effects of unloading time, composition and concentration of diluting solutions of microfluidic method on survival rate and developmental capacity of oocytes were studied, then microfluidic method was compared with traditional one-step and two-step CPA unloading protocols. The results showed that when the total time is 8 minutes, the survival rate and morula rate of oocytes treated with microfluidic method could achieve 95.99% ± 4.64% and 74.17% ± 1.18%, respectively, which were not significantly different from fresh control group (98.53% ± 2.94%; 78.22% ± 1.34%). In addition, 1 mol/L sucrose diluting solutions were more beneficial than other solutions, and it was also showed that microfluidic method achieved better survival, cleavage rate of oocytes than traditional methods. Microfluidic CPA removal protocol can reduce the damage to oocytes during unloading process, and may further improve the cryopreservation effect of oocytes.
