Anti-aging peptide composition and application thereof
An anti-aging and composition technology, applied in the field of small molecular peptides, can solve the problems of skin cell operation and difficulty in achieving the effect, and achieve the effect of repairing skin damage, no skin damage, whitening and anti-wrinkle effect
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Embodiment 1
[0079] This embodiment is the construction of recombinant plasmid
[0080] see figure 1 , the map of the vector plasmid pLentilox 3.7 and the map of the packaging plasmid pRSV-REV in the lentiviral vector system of this example.
[0081] The construction of the recombinant plasmid expressing Tetrapeptide, the recombinant plasmid expressing Hexapeptide-11, the recombinant plasmid expressing CopperTripeptide, the recombinant plasmid expressing Pentapeptide-18 and the recombinant plasmid expressing Glycine max, the specific steps are as follows:
[0082] Tetrapeptide plus proline modified Lys-Glu-Lys to stabilize the peptide structure, the design sequence is (with the sequence shown in SEQ ID NO: 1):
[0083] ggagcccagcatggccgggcgggctcgccgcgccgcgcgtcccggggggcctcggcgcttctcgctgccgcgcttctctacgccgcgctgggggacgtggtgcgctcggagcagcagataccgctctccgtgtaagtgccggggctcctgcgccgcccggggggggggaccttgcagcctccgcgaccagtgtg
[0084] Hexapeptide-11 sequence Phe-Val-Ala-Pro-Phe-Pro, the design sequence is...
Embodiment 2
[0113] This embodiment is a screening method for the use ratio of peptide compositions
[0114] 1. The construction of hair follicle dermal papilla stem cells expressing Tetrapeptide PKEK, Copper Tripeptide, Pentapeptide-18, Glycine max and Hexapeptide-11, the specific steps are as follows:
[0115] Plasmid purification and cell culture
[0116] 1.1 Prepare the five sets of plasmids constructed in Example 1.
[0117] 1.2. 18-24 hours before transfection, put 2.5×10 6 293T cells were placed in a 10 cm dish and incubated overnight at 37°C. Cells should reach 65%-70% confluence within 24 hours.
[0118] Transfected 293T cells
[0119] 1.3. Add transfer vector pLentilox 3.7 and packaging plasmid pRSV-REV to Opti-MEM, mix by pipetting thoroughly.
[0120] 1.4. Add the transfection reagent to the same tube and vortex for 10 seconds.
[0121] 1.5. Incubate the mixture at room temperature for 15 minutes.
[0122] 1.6. Add the mixture dropwise to the Petri dish and vortex to dis...
Embodiment 3
[0143] This example is the preparation of Tetrapeptide PKEK, Copper Tripeptide, Pentapeptide-18 and Glycine max
[0144] see Figure 12 , a flowchart of the method for fermentation and purification of genetically engineered bacteria, the specific steps are as follows:
[0145] The four target genes of Tetrapeptide PKEK, Copper Tripeptide, Pentapeptide-18 and Glycine max screened in Example 2 were introduced into the plasmid. The plasmids and plasmid construction and verification methods selected in this example are the same as those in Example 1.
[0146] Select Escherichia coli as the engineering bacteria, respectively introduce the plasmids carrying the four target genes of Tetrapeptide PKEK, Copper Tripeptide, Pentapeptide-18, and Glycine max into Escherichia coli, and the plasmids contain tetracycline antibody fragments, and put the strains on the tetracycline medium Cultivate and screen out the strains that successfully introduced and expressed the tetracycline antibody...
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