Stem-cell skincare composition and preparation and application methods thereof
A skin care composition and stem cell technology, applied in the field of skin care products, can solve the problems of inability to really play a role, cannot penetrate the skin, and have no modification, so as to prevent or improve skin spots, enhance self-metabolism, and delay skin aging. Effect
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[0058] The method for preparing the above-mentioned stem cell skin care composition includes the following steps:
[0059] Step 1. The stem cell culture medium after culturing the stem cells, the freeze-thaw lysate of the cultured stem cells, serum albumin, mannitol, and Arg9 membrane-permeable peptide are mixed and freeze-dried to obtain a freeze-dried powder;
[0060] Step 2. Mix glycerin, sodium citrate, ellagic acid, vitamin E, and water uniformly to obtain a solvent;
[0061] Step 3. The lyophilized powder prepared in step 1 and the solvent solution obtained in step 2 are packaged separately, and then mixed during use.
[0062] The use method of the above-prepared stem cell skin care composition includes the following steps: mix the freeze-dried powder and the solvent uniformly, shake gently until the freeze-dried powder is completely melted, and then use it; morning and evening. First clean the skin with water or facial cleanser, take an appropriate amount of the product and gen...
Embodiment 1
[0063] Example 1 Using stem cells to express
[0064] 1. Preparation of freeze-dried powder:
[0065] 1.1 Stem cell culture: Inoculate 10 million resuscitated stem cells and 15 ml of stem cell culture medium in a T75 cell culture flask at 5% CO 2 Incubate at 37°C for 48-72 hours. Among them, the stem cell culture medium formula is shown in Table 1.
[0066] Table 1
[0067] Reagent Concentration of stock solution Item No. Final concentration Amount required for 100mL medium KnockOut TM DMEM CTS TM
—A128611X 82.75mL KnockOut TM SR XenoFree CTS TM
—1261815% 15mL GlutaMAX TM -I CTS TM
200mMA12860 2mM 1mL NEAA 10mM11140 0.1mM 1mL bFGF 10μg / mL13256 8ng / mL 80μL 2-Mercaptoethanol 55mM21985 0.1mM 182μL
[0068] 1.2 Collection and processing: Collect the stem cell culture medium after culturing the stem cells and store it in a sterile container for later use; wash the cultured stem cells twice with sterile saline, add 1 ml trypsin, treat for 5 minutes at 37°C, suck out the...
Embodiment 2
[0072] Example 2 Expression of stem cell factors mediated by plasmid electrotransduction
[0073] 1. Preparation of freeze-dried powder:
[0074] 1.1 The epidermal growth factor (EGF), platelet-derived growth factor (PDGF), transforming growth factor (TGF), basic fibroblast growth factor (b-FGF), insulin-like growth factor (IGF) and nerve growth factor ( NGF), human keratinocyte growth factor (KGF-2), interleukin-1 receptor antagonist (IL-1R) gene 5'ends were fused with the membrane-permeable peptide TAT gene series, and the fused genes were cloned into EGFP. -N1 vector. The vector used for stem cell factor expression is not limited to the EGFP-N1 vector, and includes other vectors that can be expressed in animal cells such as N-P3xflag-CMV, pcDNA3.1, etc.
[0075] 1.2 Electrotransformation of stem cells
[0076] 1.2.1 Preparation of stem cells before transformation: (1) Adherent stem cells are transferred to 75cm 2 The cell culture flask is cultured, and the cell confluence is abou...
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