Simultaneous autologous epidermic cell and fibrocyte preparation method and biological cosmetic product thereof
A technology of fibroblasts and epidermal cells, applied in the directions of medical preparations, animal cells, cosmetic preparations containing active ingredients, etc., can solve the problems of poor effect, insufficient skin beauty effect, increased usage, etc., and achieve remarkable results. , restore elasticity and luster, shrink pores
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Embodiment 1
[0054] Embodiment 1 Preparation of human autologous epidermal cells
[0055] By taking people 0.1-2cm 2 For the skin, infiltrate 5ml of 1×phosphate buffered saline (PBS, pH 7.4, containing 100IU / ml penicillin and 0.1mg / ml streptomycin) for 15 minutes, suck it up with a 1ml pipette gun, and then rinse with 1×PBS (pH Value 7.4, containing 100IU / ml penicillin and 0.1mg / ml streptomycin) were also washed repeatedly, digested with disperse II after washing, placed in a refrigerator at 4°C overnight, and the skin was taken out the next day and the epidermis and dermis were torn apart with tweezers.
[0056] Cut the epidermis to 1mm with ophthalmic scissors 3 After washing with 1×PBS, add it to a 15ml centrifuge tube, centrifuge at 1000 rpm for 5 minutes, discard the supernatant, add 3ml of 0.25% (mass volume ratio) trypsin to digest for 30 minutes, wherein the trypsin contains mass volume Ratio of 0.01% EDTA; pass through a 40μm cell sieve after digestion, add 10ml 1×PBS after filt...
Embodiment 2
[0057] Embodiment 2 Preparation of human autologous fibroblasts
[0058] Get the dermis obtained in Preparation Example 1 and cut it to 1mm with ophthalmic scissors 3 After washing with 1×PBS, add it to a 15ml centrifuge tube, centrifuge at 1000 rpm for 5 minutes, discard the supernatant, add 3ml of 0.25% trypsin to digest for 30 minutes, pass through a 40μm cell sieve after digestion, add 10ml1 after filtration ×PBS, centrifuged at 1000 rpm for 10 minutes to obtain a single cell pellet, resuspended in 10ml of 1×PBS again, centrifuged at 1000 rpm for 10 minutes to obtain a single cell pellet, added α-MEM medium to resuspend, and counted , with α-MEM medium (containing 10% fetal bovine serum, 50ng / ml recombinant human stem cell growth factor, 25ng / ml recombinant human epidermal growth factor and 25ng / ml recombinant human basic fibroblast growth factor) according to 1-10 ×10 6 Cells / ml add 15ml to 75cm 2 culture flask at 37°C, 5% CO 2 Cultivate in an incubator; replace with ...
Embodiment 3
[0060] Example 3 Human autologous epidermal cells and fibroblast-specific protein expression detection
[0061]Take 1 part of 50 μL each of the autologous epidermal cells prepared in Example 1 and the fibroblast suspension prepared in Example 2 (2×10 6 1) Add 500 μL of pre-cooled ready-to-use total protein extraction and lysate (RIPA, Beijing Biotech Company) (containing 1% protease inhibitor by volume, Roche Company, Switzerland), incubate on ice for 20 minutes, 13000 rpm, 4 Centrifuge for 20 minutes. Take the supernatant, aliquot and store at -80°C for later use. The protein concentration was determined according to the instructions of the bicinchoninic acid (BCA) protein quantification kit (Wuhan Boster Company). Adjust the protein concentration with RIPA, the final concentration of the sample is 1.0 μg / μL, add 5× protein sample buffer, and keep at 95°C for 5 minutes.
[0062] According to the molecular weight of the target protein, a 10% separating gel was prepared, and...
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