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Adult stem cells derived from human skin dermis

a technology of adult stem cells and dermis, which is applied in the field of human skin dermisderived adult stem cells, can solve the problems of difficult isolating, ineffective cell isolation, and difficulty in harvesting and isolating adult stem cells, and achieves the effect of easy and simple acquisition and high yield

Inactive Publication Date: 2014-06-19
AMOREPACIFIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent describes a new method to easily and efficiently gather a high yield of human skin dermis-derived adult stem cells. These stem cells can be used to develop treatments for bone and adipose tissue-related issues. The method allows for the utilization of specific genes and growth factors that are unique to the isolated stem cells. Overall, this patent provides a simplified way to access and utilize the skin's own stem cells for therapeutic purposes.

Problems solved by technology

However, since the number of the adult stem cells is very small (predicted to be less than about 1-5% of the cells in the corresponding tissue) unlike the embryonic stem cells, there is a difficulty in harvesting and isolating them from adult tissues.
Accordingly, there is a difficulty in isolating them, but few specific markers (or biomarkers) for isolating the skin adult stem cells have been reported.
However, the cells could not be isolated effectively because the method is not quite different from that of the ordinary fibroblast culture system.

Method used

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  • Adult stem cells derived from human skin dermis
  • Adult stem cells derived from human skin dermis
  • Adult stem cells derived from human skin dermis

Examples

Experimental program
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Effect test

example 1

Isolation of RA / SA Cells from Human Dermis-Derived Fibroblasts using Gelatin or Type 4 Collagen

[0073]Human dermis-derived fibroblasts (normal human dermal fibroblasts, NHDF) were purchased from Lonza, Inc. (Walkersville, Md., USA, NHDF-Ad-Der Fibroblasts, CC-2511). The human dermis-derived fibroblasts were subcultured on a 75-cm2 T-flask under the condition of 37° C. and 5% CO2 in a CO2 incubator. The subculturing was conducted for 2 or 3 passages.

[0074]5 mL of 0.1-1% gelatin or 10-30 μg / mL type 4 collagen was coated on a 100-mm culture dish at 4° C. for 16-24 hours. After detaching the human dermis-derived fibroblasts from a 100-mm culture dish using 0.25% trypsin (trypsin-EDTA), the cells were centrifuged at 1200 rpm for 5 minutes. After removing culture medium, the cells were added to 5 mL of DMEM medium and then suspended. Then, the cells were incubated on the culture dish on which the gelatin or type 4 collagen had been coated for 5 minutes and were isolated as the cells adheri...

example 2

Colony Forming Assay of Isolated RA / SA Cells

[0075]Colony forming assay was conducted to compare the colony forming ability (sternness) of the RA / SA cells isolated using gelatin or type 4 collagen.

[0076]The isolated RA / SA cells were seeded onto a 6-well culture dish, with 1×102 cells per well. After culturing for 14 days, the cells were stained with a solution containing 10% ethanol and 0.1% crystal violet for 5 minutes at room temperature, washed 4 times with phosphate buffered saline (PBS) and observed under a microscope.

[0077]The result is shown in FIG. 1. As can be seen from FIG. 1, the isolated RA cells showed increased colony forming ability (hereinafter, the RA cells are referred to as human dermis-derived adult stern cells and the SA cells are referred to as human dermis-derived fibroblasts). The inventors of the present disclosure have deposited the human dermis-derived adult stern cells isolated in the present disclosure with the Korean Collection for Type Cultures (KCTC) o...

example 3

Selection of Genetic Markers of Human Dermis-Derived Adult Stern Cells through Measurement of mRNA Expression

[0078]The human dermis-derived adult stern cells isolated in Example 1 and dermis-derived fibroblasts were washed with 2 mL of PBS and RNA was isolated from the cells using TRIzol reagent (Invitrogen, Carlsbad, Calif., USA). The isolated RNA was purified once again using the Qiagen RNeasy kit (Qiagen, Valencia, Calif.) and the quality of the RNA was analyzed using the Agilent 2100 Bioanalyzer (Agilent Technologies, Santa Clara, Calif., USA). cDNA was synthesized from the RNA using the Superscript Reverse Transcriptase (RT) kit (Invitrogen, Carlsbad, Calif.) and quantitatively analyzed by real-time reverse transcription polymerase chain reaction (Q-RT-PCR).

[0079]The change in the expression pattern of Sox2 and S100b genes, which are known as characteristic genetic markers of the adult stem cells, in the isolated human dermis-derived adult stem cells and the dermis-derived fibr...

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Abstract

Provided in the present invention are adult stem cells derived from human skin dermis, and a method for isolating same. Further provided in the present invention are osteoblastic cells and adipocytes differentiated from the adult stem cells derived from human skin dermis, and a differentiation method therefor. Further provided in the present invention is a composition for osteogenesis or lipogenesis containing the stem cells, osteoblastic cells, or adipocytes. The isolation method of the present invention enables the adult stem cells derived from human skin dermis to be obtained in an easy and simple manner at a high yield rate. Genes and growth factors which are specifically expressed in the adult stem cells derived from human skin dermis isolated using the method can be separated, identified, and used later.

Description

TECHNIACL FIELD[0001]The present disclosure relates to human skin dermis-derived adult stem cells.BACKGROUND ART[0002]In recent years, efforts have been consistently made to isolate adult stem cells having pluripotency from tissues. Although these adult stem cells are disadvantageous in that they cannot differentiate into all cell types unlike the totipotent embryonic stem cells, they are useful in researches and applications since they are free from the ethical issues of the embryonic stem cells. However, since the number of the adult stem cells is very small (predicted to be less than about 1-5% of the cells in the corresponding tissue) unlike the embryonic stem cells, there is a difficulty in harvesting and isolating them from adult tissues.[0003]Ultimately, the main purpose of stem cell researches is for therapy. It is expected that the health of patients with diseases in specific organs or tissues can be recovered through cell transplantation or replacement of providing new ste...

Claims

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Application Information

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IPC IPC(8): C12N5/0775A61K35/28A61K35/32A61K35/35A61K35/36
CPCC12N5/0625C12N2533/54A61K35/36A61K35/32A61K35/35A61P17/00A61P17/02A61P19/10A61K35/28C12N5/0668C12Q1/6881C12Q2600/158G01N33/74G01N2333/475G01N2333/485G01N2333/49G01N2333/50
Inventor SHIM, JOONG HYUNYANG, SEUNG HALEE, TAE RYONGKANG, HAK HEESHIN, DONG WOOK
Owner AMOREPACIFIC CORP
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