Cosmetic composition containing fusion protein with skin penetration enhancing peptide conjugated thereto for skin improvement
A fusion protein, skin penetration technology, applied in the direction of peptide/protein ingredients, preparations for skin care, medical preparations containing active ingredients, etc. To achieve the effect of improving skin retention and improving skin permeability
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Embodiment 1
[0138] Example 1: Screening of skin penetration enhancing peptides
[0139] In order to screen skin penetration-promoting peptides, a phage display method combining a phage library and a dissolution test method for transdermal preparations was performed.
[0140] First, in 500 mL of TBS (50 mM Tris pH 7.5, 150 mM NaCl) solution containing 1% BSA, 10 9 phages to obtain a phage solution.
[0141] Next, pigskin (0.7mm thick, Medikinetics) was installed between the upper and lower ends of Franz glass cell (standard diameter 9mm, Receiver 5mL, Permgear), and then the above-mentioned phage solution was added to the upper end and reacted for 16 hours to obtain infiltration The above-mentioned pigskin reaches the phage at the receiver at the lower end and amplifies it.
[0142] The above amplification was performed using E. coli ER2738 (New England Biolab) as a host cell. Specifically, 5 mL of the above phage solution was added to Escherichia coli ER2738 strain cultured with shakin...
Embodiment 2
[0145] Example 2: Preparation of a fusion protein in which a peptide for promoting skin penetration is bound to a physiologically active protein
Embodiment 2-1
[0146] Example 2-1: Preparation of a fusion protein in which a peptide for promoting skin penetration is bound to a neurotransmitter release regulating peptide
[0147] Synthesize the fusion protein of SEQ ID NO: 32 comprising the skin penetration promoting peptide having the amino acid sequence of SEQ ID No. 1 obtained from the above-mentioned Example 1 combined with the neurotransmitter release regulating peptide having the amino acid sequence of SEQ ID NO: 2. The fusion protein of SEQ ID NO: 33 combining the peptide for promoting skin penetration with the amino acid sequence of SEQ ID NO: 1 and the neurotransmitter release regulating peptide having the amino acid sequence of SEQ ID NO: The fusion protein of SEQ ID NO: 34 to which the neurotransmitter release-regulating peptide of amino acid sequence No. 4 binds and the peptide for promoting skin penetration having the amino acid sequence of SEQ ID NO: 1 binds to the neurotransmitter release-regulating peptide of botulinum to...
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