Patent ID: 7635589

Claim:
A method for the preparation of a dermal papilla tissue which comprises the steps of: 1) isolating dermal papilla and lower dermal sheath cells from the hair follicle; 2) culturing the isolated cells in a medium selected from the group consisting of DMEM (Dulbecco's Modified Eagle Medium), DMEM/F-12, F-12, McCoy's 5A, RPMI 1640, Williams'medium E and IMDM (Iscove's Modified Dulbecco's Medium) medium; and 3) inducing auto-aggregation of the cells obtained in step (2) by culturing them in a medium containing 30 to 200 mg/l each of L-arginine, L-asparagine, L-aspartic acid, L-cystine-2HCl, L-isoleucine, L-Leucine, and L-lysine; 30 to 210 mg/l each of L-phenylalanine, L-tryptophan, and L-tyrosine; 50 to 600 mg/l each of L-alanine, L-glutamic acid, L-glycine, L-histidine, L-methionine, L-proline, L-serine, L-threonine, and L-valine; 0.01 to 2 mg/l each of biotin, D-Ca pantothenate and riboflavin; 3 to 16 mg/l each of choline chloride, folic acid, niacinamide, pyridoxine-HCl, and thiamine-HCl; 10 to 15 mg/l of i-inositol; 0.02 to 0.03 mg/l vitamin B 12 ; 400 to 600 mg/l of glutamine; 1,500 to 3,000 mg/l of D-glucose; 3,000 to 3,500 mg/l of sodium bicarbonate (NaHCO 3 ); 2,000 to 2,500 mg/l of HEPES (N-[2-hydroxyethyl]piperazine-N′-[2-ethanesulfonic acid]); 1.0 to 2.0 mM of Ca; 0.5 to 1.0 mM of Mg; 0.25 to 0.7 nM each of Cu, Fe, Mn, and Zn; 4,000 to 5,000 mg/l of sodium chloride and 0.1 to 10,000 ng/ml of a growth factor selected from the group consisting of hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), bone morphogenic protein (BMP).