KR102171320B1 - 기관점막 조직의 탈세포화 방법 - Google Patents
기관점막 조직의 탈세포화 방법 Download PDFInfo
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- KR102171320B1 KR102171320B1 KR1020190048557A KR20190048557A KR102171320B1 KR 102171320 B1 KR102171320 B1 KR 102171320B1 KR 1020190048557 A KR1020190048557 A KR 1020190048557A KR 20190048557 A KR20190048557 A KR 20190048557A KR 102171320 B1 KR102171320 B1 KR 102171320B1
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Abstract
Description
도 2는 본 발명의 탈세포화 방법에 의해 제조된 돼지의 기관 점막시트를 나타낸 것이다.
도 3은 본 발명에 따라 제조된 탈세포화 기관 점막시트의 dsDNA 함량을 나타낸 것이다.
도 4는 본 발명에 따라 제조된 탈세포화 기관 점막시트 중 mFTP 그룹의 H&E 염색 결과를 이용하여 시트 내 핵 포함 정도를 확인한 결과를 나타낸 것이다.
도 5는 본 발명에 따라 제조된 탈세포화 기관 점막시트의 H&E 염색 결과를 이용하여 시트 내 핵 포함 정도를 확인한 결과를 나타낸 것이다.
도 6은 본 발명에 따라 제조된 탈세포화 기관 점막시트의 프로테오글리칸 및 콜라겐 함량, 면역조직학적 분석 결과를 나타낸 것이다. Safranin O 염색에 있어서 파란색은 콜라겐을 의미하며, 그 외 염색 결과에서 짙은 갈색은 양성임을 의미한다 (Scale bar=100 μm).
도 7은 본 발명에 따라 제조된 탈세포화 기관 점막의 백혈구 공통항원 CD45에 대한 염색 결과를 나타낸 것이다.
도 8은 본 발명에 따라 제조된 탈세포화 기관 점막 내 콜라겐 함량을 분석한 결과를 나타낸 것이다.
도 9는 본 발명에 따라 제조된 탈세포화 기관 점막의 형태학적 특성을 관찰하기 위해 점막 조직 내강 및 단면을 SEM으로 분석한 결과를 나타낸 것이다 (Scale bar = 1 μm).
도 10 및 도 11은 본래 조직 및 본 발명에 따라 제조된 탈세포화 기관 점막의 세포 독성 및 생체적합성을 분석한 결과를 나타낸 것이다.
Score | 3 | 2 | 1 | 0 |
Day 3 | ||||
세포침윤(Cellular infiltration, 40x) | >150 cells | 75-150 cells | 1-75 cells | 0 cells |
분해(Degradation) | No scaffold present | Some scaffold present | Mostly present | No degradation |
캡슐화(Encapsulation) | No encapsulation | Minimal encapsulation | Moderate encapsulation | Dense encapsulation |
염증성 세포 응집 (40x) | 0 cells | 1-75 cells | 75-150 cells | >150 cells |
Day 14 | ||||
세포침윤(Cellular infiltration, 40x) | >150 cells | 75-150 cells | 1-75 cells | 0 cells |
연결조직(collective tissue organization) | Highly organized connective tissue present |
Moderately organized connective tissue present |
Unorganized connective tissue throughout disrupted original scaffold | Original scaffold intact |
분해(Degradation) | No scaffold present | Some scaffold present | Mostly present | No degradation |
캡슐화(Encapsulation) | No encapsulation | Minimal encapsulation | Moderate encapsulation | Dense encapsulation |
다핵거대세포(40x) | 0 cells | 1 cell | 2-5 cells | >5 cells |
혈관분포 (vascularity, 40x) |
>10 vessels | 6-10 vessels | 2-5 vessels | 0-1 vessel |
Day 35 | ||||
연결조직(collective tissue organization) | Highly organized connective tissue present |
Moderately organized connective tissue present |
Unorganized connective tissue throughout disrupted original scaffold | Original scaffold intact |
분해(Degradation) | No scaffold present | Some scaffold present | Mostly present | No degradation |
캡슐화(Encapsulation) | No encapsulation | Minimal encapsulation | Moderate encapsulation | Dense encapsulation |
혈관분포 (vascularity, 40x) |
0 cells | 1 cell | 2-5 cells | >5 cells |
Claims (11)
- (a) 기관(trachea) 세척 후, 동결한 후 해동하는 단계;
(b) 상기 (a) 단계의 기관에서 물리적으로 연골을 제거하여 기관조직을 수득하는 단계;
(c) 상기 (b) 단계의 조직에 단백질 분해효소를 포함하는 용액을 처리하여 조직 내 세포간 연접을 분리하는 단계; 및
(d) 상기 (c) 단계의 조직에 디소듐 카보네이트(Disodium carbonate), 과산화수소, 시트르산 및 소듐 카보네이트를 포함하는 계면활성제 용액을 처리하여 탈세포화하는 단계;를 포함하는 기관 점막 조직의 탈세포화 방법. - 제1항에 있어서, 상기 (a) 단계의 기관(trachea)은 돼지에서 추출된 것인, 기관 점막 조직의 탈세포화 방법.
- 삭제
- 삭제
- 제1항에 있어서, 상기 (c) 단계의 단백질 분해 효소는 디스파제 (Dispase) 및 트립신 (Tripsin)으로 이루어진 군으로부터 선택된 하나 이상인 것인, 기관 점막 조직의 탈세포화 방법.
- 제1항에 있어서, 상기 (c) 단계는 30 내지 40℃에서 수행되는 것인, 기관 점막 조직의 탈세포화 방법.
- 제1항에 있어서, 상기 (d) 단계의 계면활성제 용액 처리 전, 트리톤 X-100 (Triton X-100)을 처리하여 탈세포화하는 단계;를 더 포함하는, 기관 점막 조직의 탈세포화 방법.
- 제1항에 있어서, 상기 (d) 단계의 계면활성제 용액의 디소듐 카보네이트 및 과산화수소는 1:1 내지 2의 부피비로 혼합된 것인, 기관 점막 조직의 탈세포화 방법.
- 삭제
- 제1항에 있어서, 상기 (d) 단계는 20 내지 30℃에서 수행되는 것인, 기관 점막 조직의 탈세포화 방법.
- 제1항 내지 제2항, 제5항 내지 제8항, 제10항 중 선택되는 어느 한 항의 탈세포화 방법으로 제조된 인공 기관 점막시트.
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