Patent ID: 8524492

Claim:
A method for amplifying large numbers of hair follicle stem cells in vitro, comprising the following steps : (1) digesting hair follicles or a hair follicle tissue block in the presence of protease to obtain the cells, seeding the said cells on microcarriers with a density range from 1×10 3 cells per gram of microcarrier to 1×10 8 cells per gram of microcarrier, and then suspending the microcarriers in liquid culture media; (2) transfering the said microcarriers, together with the cells, into a revolving bottle; (3) feeding liquid culture media into the said revolving bottle to 1/10-⅓ of it's volume; (4) placing the said revolving bottle into a cell incubator for cell culture, under the conditions of 37° C., 5v/v%CO 2 , and rotating the said revolving bottle 1-5 minutes every hour, and the rotation speed is 10-300 rounds/min; (5) using a digestive agent to digest the said cells from the said microcarriers, when the said cells have nearly grown to a monolayer on the microcarriers, and then, inactivating the said digestive agent by using serum, and after washing away serum and antibiotics by using phosphate buffer solution, harvesting the amplified hair follicle stem cells.