KR20230015191A - 무세포 진피층 이식재의 두께를 증가시키는 방법 - Google Patents
무세포 진피층 이식재의 두께를 증가시키는 방법 Download PDFInfo
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Abstract
Description
도 2는 일 실시예에 따른 무세포 진피층 이식재의 두께를 증가시키는 방법의 순서도를 나타낸 것이다.
도 3은 일 실시예에 따른 무세포 진피층 이식재의 두께를 증가시키는 방법의 순서도를 나타낸 것이다.
도 4는 무세포 진피층에 과산화수소 처리 단계 및 진공 처리 단계를 수행한 실시예 1과 과산화수소 처리 단계 및 진공 처리 단계를 수행하지 않은 비교예 1 및 과산화수소 처리 단계를 수행한 비교예 2의 인장력, 최대 힘, 및 신장력을 비교한 결과이다.
도 5는 무세포 진피층에 spike 처리 없이 과산화수소 처리 단계 및 진공 처리 단계를 수행한 후 전자선 조사(5 kGy, 15 kGy)를 수행한 실시예 3과 spike 처리 없이 과산화수소 처리 단계 및 진공 처리 단계만을 수행한 전자선 조사 전의 실시예 1, 및 두께 증대 처리 전의 비교예 1에 대하여 보관용액에서 4주간 보관 후의 인장력, 최대힘, 및 신장력을 비교한 결과이다.
도 6은 무세포 진피층에 과산화수소 처리 단계 및 진공 처리 단계를 수행하여 두께를 증대시켜 보관용액에 4주간 보관하는 동안의 두께 변화를 전자선 무처리군, 전자선 5 kGy 조사군, 전자선 15 kGy 조사군에 대해 비교한 결과이다.
구분
(단위: mm) |
원래 두께
(비교예 1) |
H
2
O
2
처리 후 두께
(비교예 2) |
H
2
O
2
+ vacuum 처리 후 두께
(실시예 1) |
전/후 두께 차 | 전/후 두께 차 평균 |
1 | 2.82 | 3.80 | - | 0.98 | 0.98 |
2 | 2.86 | 3.83 | - | 0.97 | |
3 | 2.76 | 3.75 | - | 0.99 | |
4 | 2.77 | - | 3.18 | 0.41 | 0.47 |
5 | 2.75 | - | 3.14 | 0.39 | |
6 | 2.70 | - | 3.30 | 0.60 |
구분 |
Spike (○) 경우
증대 전/후 두께 차 (실시예 2) |
Spike (X)경우
증대 전/후 두께 차 (실시예 1) |
1 | 2.04 mm | 0.40 mm |
2 | 1.33 mm | 0.45 mm |
3 | 0.88 mm | 0.20 mm |
4 | 1.38 mm | 0.37 mm |
5 | 0.80 mm | 0.89 mm |
6 | 0.67 mm | 0.46 mm |
평균 | 1.183 mm | 0.462 mm |
실시예 1 (전자선 조사 전) |
구분 | Tensile Strength (MPa) | Load at Maximum Load (N) | Percentage Total Elongation at Maximum Force |
9.05 | 130.12 | 173.18 | ||
8.35 | 128.34 | 155.64 | ||
8.14 | 156.24 | 173.56 | ||
평균 | 8.51 | 138.23 | 167.46 | |
STDEV | 0.48 | 15.62 | 10.24 | |
실시예 3(전자선 조사(5kGy) 후) | 구분 | Tensile Strength (MPa) | Load at Maximum Load (N) | Percentage Total Elongation at Maximum Force |
9.24 | 145.91 | 146.79 | ||
8.17 | 130.93 | 163.28 | ||
9.15 | 157.25 | 151.42 | ||
평균 | 8.85 | 144.70 | 153.83 | |
STDEV | 0.59 | 13.20 | 8.51 | |
실시예 3(전자선 조사(15kGy) 후) | 구분 | Tensile Strength (MPa) | Load at Maximum Load (N) | Percentage Total Elongation at Maximum Force |
10.56 | 210.72 | 125.66 | ||
13.87 | 225.69 | 149.61 | ||
11.23 | 208.31 | 134.52 | ||
평균 | 11.89 | 214.91 | 136.60 | |
STDEV | 1.75 | 9.42 | 12.11 |
실시예 2 (전자선 조사 전) |
구분 | Tensile Strength (MPa) | Load at Maximum Load (N) | Percentage Total Elongation at Maximum Force |
8.02 | 134.22 | 172.32 | ||
8.11 | 137.56 | 168.34 | ||
7.92 | 120.44 | 178.33 | ||
평균 | 8.02 | 130.74 | 173.00 | |
STDEV | 0.10 | 9.08 | 5.03 | |
실시예 4(전자선 조사(5kGy) 후) | 구분 | Tensile Strength (MPa) | Load at Maximum Load (N) | Percentage Total Elongation at Maximum Force |
10.38 | 206.85 | 148.92 | ||
14.27 | 246.33 | 172.34 | ||
12.65 | 233.46 | 156.28 | ||
평균 | 12.43 | 228.88 | 159.18 | |
STDEV | 1.95 | 20.13 | 11.98 | |
실시예 4(전자선 조사(15kGy) 후) | 구분 | Tensile Strength (MPa) | Load at Maximum Load (N) | Percentage Total Elongation at Maximum Force |
10.97 | 223.00 | 136.94 | ||
17.13 | 315.20 | 178.32 | ||
12.57 | 275.38 | 118.55 | ||
평균 | 13.56 | 271.19 | 144.60 | |
STDEV | 3.20 | 46.24 | 30.61 |
구분 | Spike (○) | Spike (X) | |||||
전자선 조사 전 두께 차
(실시예 2) |
전자선 조사 후 두께 차 (실시예 4) | 전자선 전/후 감소정도 |
전자선 조사 전 두께 차
(실시예 1) |
전자선 조사 후 두께 차 (실시예 3) | 전자선 전/후 감소정도 | ||
5 kGy | 1 | 2.04 mm | 1.75 mm | -0.29 mm | 0.40 mm | 0.29 mm | -0.11 mm |
2 | 1.33 mm | 1.13 mm | -0.20 mm | 0.45 mm | 0.37 mm | -0.08 mm | |
3 | 0.88 mm | 0.80 mm | -0.08 mm | 0.20 mm | -0.20 mm | -0.40 mm | |
평균 | -0.19 mm | -0.20 mm | |||||
15 kGy | 4 | 1.38 mm | 1.07 mm | -0.31 mm | 0.37 mm | 0.30 mm | -0.07 mm |
5 | 0.80 mm | 0.70 mm | -0.10 mm | 0.89 mm | 0.76 mm | -0.13 mm | |
6 | 0.67 mm | 0.56 mm | -0.11 mm | 0.46 mm | 0.39 mm | -0.07 mm | |
평균 | -0.17 mm | -0.09 mm | |||||
전체 평균 | 1.183 mm | 1.00 mm | -0.18 mm | 0.462 mm | 0.32 mm | -0.14 mm |
Claims (11)
- 세포가 제거된 진피층을 과산화수소 용액을 포함하는 반응 용기에 침지시키는 단계;를 포함하는 무세포 진피층 이식재의 두께를 증가시키는 방법.
- 청구항 1에 있어서, 상기 방법은 상기 반응 용기에 진공 조건을 가하는 단계;를 더 포함하는 것인 방법.
- 청구항 2에 있어서, 상기 진공 조건을 가하는 단계는 상기 반응 용기에 1 내지 950 mTorr 압력 조건을 가하는 것인 방법.
- 청구항 1에 있어서, 상기 과산화수소 용액은 5.0 내지 30.0% (w/v)의 농도인 것인 방법.
- 청구항 1에 있어서, 상기 방법은 상기 침지시키는 단계 이전에, 상기 세포가 제거된 진피층의 표면에 복수의 홀을 형성하는 단계;를 더 포함하는 것인 방법.
- 청구항 2에 있어서, 상기 방법은 상기 진공 조건을 가하는 단계 이후에, 상기 진피층에 전자선을 조사하는 단계;를 더 포함하는 것인 방법.
- 청구항 6에 있어서, 상기 전자선의 조사 선량은 1 내지 30 kGy인 것인 방법.
- 청구항 1에 있어서, 상기 방법은 상기 침지시키는 단계 이전에, 개체로부터 분리된 피부조직에서 표피층을 제거하는 단계; 및 상기 표피층이 제거된 피부조직에서 진피층의 세포를 제거하는 단계;를 더 포함하는 것인 방법.
- 청구항 8에 있어서, 상기 표피층은 단백질 분해효소, 이온용액 또는 이들의 조합을 이용하여 진피층과 분리시켜 제거하는 것인 방법.
- 청구항 8에 있어서, 상기 진피층의 세포를 제거하는 단계는 계면활성제, 초음파 처리 또는 이들의 조합을 처리하여 제거하는 것인 방법.
- 청구항 1 내지 10 중 어느 한 항의 방법으로 제조된 무세포 진피층 이식재.
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PCT/KR2022/010806 WO2023003430A1 (ko) | 2021-07-22 | 2022-07-22 | 무세포 진피층 이식재의 두께를 증가시키는 방법 |
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KR100469661B1 (ko) * | 2000-03-28 | 2005-02-02 | 한스바이오메드 주식회사 | 이식용 무세포 진피층 및 이의 제조방법 |
DE102011008604A1 (de) * | 2011-01-14 | 2012-07-19 | Tutogen Medical Gmbh | Herstellung eines Transplantats aus tierischer Dermis mit Natriumsulfidlösung |
KR101362402B1 (ko) * | 2012-03-15 | 2014-02-14 | 김준용 | 기저막층이 제거된 무세포 진피조직 이식체 |
KR101650273B1 (ko) * | 2014-06-11 | 2016-08-23 | 주식회사 엘앤씨바이오 | 무세포 진피의 가교 및 생체 이식 또는 삽입용 조성물의 제조방법 |
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