# US 12,005,123 B2 · Conjugate of isotretinoin and peptide

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- Number: US 12,005,123 B2
- Document ID: US12005123B2
- Status: Granted
- Kind: B2
- Application number: 17/736,261
- Filed: 2022-05-04
- Published: 2022-08-25
- Granted: 2024-06-11
- Earliest claimed: 2017-05-11
- Assignees: Caregen Co., Ltd.
- Applicants: Caregen Co., Ltd.
- Inventors: Yong Ji Chung; Eun Mi Kim
- Web page: https://patentgrep.com/patent/US12005123B2

## CPC

- A61K 47/64: Drug-peptide, drug-protein or drug-polyamino acid conjugates, i.e. the modifying agent being a peptide, protein or polyamino acid which is covalently bonded or complexed to a therapeutically active agent (peptidic linkers A61K47/65)
- A61K 8/64: Proteins; Peptides; Derivatives or degradation products thereof
- A61K 31/19: Carboxylic acids, e.g. valproic acid (salicylic acid A61K31/60)
- A61Q 17/00: Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q 19/00: Preparations for care of the skin
- C07K 7/08: having 12 to 20 amino acids (gastrins C07K14/595; somatostatins C07K14/655; melanotropins C07K14/68)
- C07K 19/00: Hybrid peptides {, i.e. peptides covalently bound to nucleic acids, or non-covalently bound protein-protein complexes}
- A61K 2800/522: Antioxidants; Radical scavengers
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- C07K: PEPTIDES (peptides in foodstuffs A23; obtaining protein compositions for foodstuffs, working-up proteins for foodstuffs A23J; preparations for medicinal purposes A61K; peptides containing beta-lactam rings C07D; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, C07D; ergot alkaloids of the cyclic peptide type C07D519/02; macromolecular compounds having statistically distributed amino acid units in their molecules, i.e. when the preparation does not provide for a specific; but for a random sequence of the amino acid units, homopolyamides and block copolyamides derived from amino acids C08G69/00; macromolecular products derived from proteins C08H1/00; preparation of glue or gelatine C09H; single cell proteins, enzymes C12N; genetic engineering processes for obtaining peptides C12N15/00; compositions for measuring or testing processes involving enzymes C12Q; investigation or analysis of biological material G01N33/00)

## Abstract

A compound comprising a structure in which isotretinoin is linked to a peptide via a covalent bond and an antibiotic, anti-inflammatory, or anti-oxidative pharmaceutical or cosmetic composition comprising the same. A compound having a structure in which isotretinoin is linked to a peptide via a covalent bond according to the present invention exhibits excellent physiological activity such as antibiotic, anti-inflammatory, or anti-oxidative actions, as well as having outstanding properties, such as solubility in water, etc., and thus can find useful applications in various fields including medicines, cosmetics, etc.

## Claims

### Claim 1

An anti-oxidative composition comprising a compound, wherein the compound having a structure in which isotretinoin and a peptide are linked to each other via a covalent bond; wherein the peptide is a peptide having the amino acid sequence consisting of SEQ ID NO: 1.

### Claim 2 (depends on 1)

The anti-oxidative composition of claim 1, wherein the composition is in the form of a cosmetic composition.

### Claim 3 (depends on 2)

The anti-oxidative composition of claim 2, wherein the cosmetic composition has the formulation selected from the group consisting of a skin softener, a nutrition lotion, a nutrition cream, a massage cream, an essence, an eye cream, a cleansing cream, a cleansing foam, a cleansing water, a pack, a spray, a powder, a hair tonic, a hair cream, a hair lotion, a hair shampoo, a hair rinse, a hair conditioner, a hair spray, a hair aerosol, a pomade, a sol-gel, an emulsion, an oil, a wax, and an aerosol.