[Optimization of chromosome flaking technique for mesenchymal stem cells].

OBJECTIVE:To optimize the condition for chromosome flaking of mesenchymal stem cells to ensure the cytogenetic quality control of expanding production and clinical application. METHODS:Chromosomal flaking methods were optimized from current chromosome preparation techniques from the aspects of MSCs cell culture concentration, colchicine treatment time and low permeability time. RESULTS:By repeated pre-experiments, the optimal MSCS chromosome flaking condition of MSCs was determined as cell culture concentration of (1-2)× 106 cells per T25 cell culture bottle, and the colchicines processing time was determined as 2 hours and 10 minutes, and the low permeability was 1 hour. CONCLUSION:The optimized chromosome flaking condition can fulfill the requirement of cytogenetic quality control for MSCs.