Method for culturing skin-derived stem cells, and use thereof

Patent metadata

Field	Value
Publication number	US-2025066726-A1
Application number	US-202218723562-A
Country	US
Kind code	A1
Filing date	Dec 23, 2022
Priority date	Dec 24, 2021
Publication date	Feb 27, 2025
Grant date	—

Abstract

The present invention relates to a method for culturing skin-derived stem cells and uses of the same, particularly to a method for culturing skin-derived stem cells; skin-derived stem cells prepared by the method; and a pharmaceutical composition for skin regeneration or wound treatment; a quasi-drug composition; and a cosmetic composition, which contain the prepared skin-derived stem cells, a culture of the skin-derived stem cells, or cells differentiated from the skin-derived stem cells as an active ingredient.According to the culture method of the present invention, stem cells can be effectively isolated and obtained from skin tissue, and the obtained skin-derived stem cells have excellent pluripotency and self-replication ability as well as excellent skin regeneration and wound treatment effects and can be usefully utilized for skin regeneration and wound treatment or improvement.

First claim

1 . A method for culturing skin-derived stem cells, the method comprising:
(a) encapsulating skin tissue in a hydrogel and culturing the skin tissue to obtain a culture; and (b) decomposing the hydrogel in the obtained culture to recover stem cells that have migrated from the skin tissue into the hydrogel and proliferated in the hydrogel.

2 . The method for culturing skin-derived stem cells according to claim 1 , wherein the culture of skin tissue in step (a) involves encapsulating a skin fragment in a hydrogel and culturing the skin fragment for 3 to 20 days.

3 . The method for culturing skin-derived stem cells according to claim 1 , comprising a pretreatment step of skin tissue, which includes treating skin tissue sample at a temperature of 50° C. to 70° C. for 30 to 90 seconds; immersing the skin tissue sample in an alcohol or a surfactant for 1 to 10 minutes; and performing washing as a pretreatment step of skin tissue before step (a).

4 . The method for culturing skin-derived stem cells according to claim 1 , wherein the skin-derived stem cells have increased expression of one or more genes selected from GAS1, OSR2, DMKN, or SBSN.

5 . The method for culturing skin-derived stem cells according to claim 1 , wherein the skin-derived stem cells have immunological characteristics in which CD29, CD44, CD73, CD90, and CD105 are expressed but CD14, CD34, and CD45 are not expressed.

6 . The method for culturing skin-derived stem cells according to claim 1 , wherein the skin-derived stem cells maintain a cell shape and a cell size until ninth subculture after tissue culture and cell isolation.

7 . Skin-derived stem cells prepared by the method according to claim 1 .

8 . The skin-derived stem cells according to claim 7 , wherein the skin-derived stem cells have increased expression of one or more genes selected from GAS1, OSR2, DMKN, or SBSN.

9 . The skin-derived stem cells according to claim 7 , wherein the skin-derived stem cells have immunological characteristics in which CD29, CD44, CD73, CD90, and CD105 are expressed but CD14, CD34, and CD45 are not expressed.

10 . A pharmaceutical composition for skin regeneration or wound treatment, comprising skin-derived stem cells prepared by the method according to claim 1 , a culture of the skin-derived stem cells, or cells differentiated from the skin-derived stem cells as an active ingredient.

11 . A quasi-drug composition for skin regeneration or wound improvement, comprising skin-derived stem cells prepared by the method according to claim 1 , a culture of the skin-derived stem cells, or cells differentiated from the skin-derived stem cells as an active ingredient.

12 . A cosmetic composition for skin regeneration or wound improvement, comprising skin-derived stem cells prepared by the method according to claim 1 , a culture of the skin-derived stem cells, or cells differentiated from the skin-derived stem cells as an active ingredient.

Assignees

• Univ Ewha Ind Collaboration
• Hierabio Inc

Inventors

• Lee Seung Jin
• Shin Ji-Young
• Jeon Jeong Hwa
• Kim Heejung

Classifications

• C12N2513/00

  3D culture · CPC title

• C12N2533/56

  Fibrin; Thrombin · CPC title

• C12N5/0625

  Epidermal cells, skin cells; Cells of the oral mucosa · CPC title

• C12N5/0012

  Cell encapsulation · CPC title

• C12M45/06

  by chemical means or hydrolysis · CPC title