KR102219743B1 - 신규 연골 세포 유도 방법 - Google Patents
신규 연골 세포 유도 방법 Download PDFInfo
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- KR102219743B1 KR102219743B1 KR1020167014549A KR20167014549A KR102219743B1 KR 102219743 B1 KR102219743 B1 KR 102219743B1 KR 1020167014549 A KR1020167014549 A KR 1020167014549A KR 20167014549 A KR20167014549 A KR 20167014549A KR 102219743 B1 KR102219743 B1 KR 102219743B1
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Abstract
Description
도 2는, iPS세포주에 Col11a2-EGFP-IRES-Puro를 도입한 Col11a2 유전자 리포터 iPS세포를 SCID 마우스의 피하에 주입했을 때 얻어진 테라토마의 조직 염색상을 나타낸다.
도 3은, 다능성 줄기세포로부터 연골 세포를 유도하는 프로토콜의 모식도를 나타낸다.
도 4의 a는, Col11a2 유전자 리포터 iPS세포 및 야생형 iPS세포를 각 조건(A, ABT 및 ABTG)을 이용하여 유도한 day14의 위상차 현미경상(위쪽 이미지) 및 형광 현미경상(아랫쪽 이미지)을 나타낸다. 도 4의 b는, Col11a2 유전자 리포터 iPS세포를 각 조건(A, ABT 및 ABTG)을 이용하여 유도한 day28에서의 세포의 SOX9, AGGRECAN, COL2A1 및 COL11A2의 발현량을 RT-PCR로 계측한 결과를 나타낸다. 도면 중 연골세포(Chondrocyte)는 양성 대조로서 Cell Applications, Inc로부터 구입한 사람 연골 세포(402RD-R10f)의 결과를 나타낸다. 도 4의 c는, 각 조건(A, ABT 및 ABTG)을 이용하여 유도한 day42에서의 HE 염색 및 사프라닌 O 염색상을 나타낸다.
도 5는, 종래의 방법(Micromass) 및 본 발명의 프로토콜에 따라 유도한 day28의 세포에서의 SOX9, AGGRECAN, COL2A1 및 COL11A2에 대한 RT-PCR의 결과를 나타낸다.
도 6의 a는, 본 발명의 프로토콜에 따라 유도한 day28의 미립자의 HE 염색 및 사프라닌 O 염색상을 나타낸다. 도 6의 b는, 본 발명의 프로토콜에 따라 유도한 day42의 미립자의 HE 염색, 사프라닌 O 염색, II형 콜라겐의 염색 및 I형 콜라겐의 염색상을 나타낸다. 도 6의 c는, 본 발명의 프로토콜(day42로부터 혈청 함유 배지로 교환)에 따라 유도한 day70의 미립자의 HE 염색, 사프라닌 O 염색, II형 콜라겐의 염색 및 I형 콜라겐의 염색상을 나타낸다. 도 6의 d는, 본 발명의 프로토콜(day42로부터 혈청 함유 배지로 교환)에 따라 유도한 day56 및 day70의 미립자의 SOX9의 염색상을 나타낸다. 도 6의 e는, 본 발명의 프로토콜(day42로부터 혈청 함유 배지로 교환)에 따라 유도한 day56의 미립자의 GFP의 형광 현미경상을 나타낸다. 도 6의 f는, 본 발명의 프로토콜(day42로부터 혈청 함유 배지로 교환)에 따라 유도한 경우의 전체 세포수에 대한 SOX9 양성 세포수의 함유율을 계시적으로 측정한 결과를 나타낸다.
도 7의 a는, 본 발명의 프로토콜 중 day42로부터 연골 배지인 채로 변경된 배양 프로토콜에 따라 유도한 day70의 미립자의 HE 염색, 사프라닌 O 염색, II형 콜라겐의 염색 및 I형 콜라겐의 염색상을 나타낸다. 도 7의 b는, 본 발명의 프로토콜 중 day42로부터 연골 배지인 채로 변경된 배양 프로토콜에 따라 유도한 day140의 미립자의 HE 염색, 사프라닌 O 염색, II형 콜라겐의 염색 및 I형 콜라겐의 염색상을 나타낸다.
도 8은, 본 발명의 프로토콜 중 day14로부터 day42에 있어서 접착 배양한 변경 프로토콜에 따라 유도한 day42의 미립자의 HE 염색, 사프라닌 O 염색상을 나타낸다.
도 9의 a는, day42에서의 배양 접시의 바닥면에 접착한 세포의 위상차 현미경상(좌측 이미지) 및 형광 현미경상(우측 도면)을 나타낸다. 도 9의 b는, day42에서의 본 발명의 프로토콜에 따라 유도한 미립자 및 배양 접시의 바닥면에 접착한 세포에서의 SOX9, AGGRECAN, COL2A1 및 COL11A2에 대한 RT-PCR의 결과를 나타낸다. 각 유전자의 발현량은, 베타-액티빈(ACTB)의 발현량에 의해 표준화하고, 재분화된 연골 세포 또는 섬유아세포(Fibroblast)의 값을 대조로 하여 산출하였다.
도 10의 a는, 본 발명의 프로토콜에 따라 유도한 연골 세포(day0으로부터 day70), 사람 연골 세포(Cartilage) 및 종래의 방법에 따라 유도한 연골 세포(differ 2W 또는 HDF 또는 Bone)에서 각 유전자의 RT-PCR 결과를 나타낸다. 결과는, 베타-액티빈(ACTB)의 발현량에 의해 표준화하고, HDF, 분화 2주째의 세포, 정상(正常) 관절 연골 세포, 또는 정상 골세포의 값을 대조로 하여 산출하였다. 값은, n=3의 평균값을 나타낸다. 도 10의 b는, 본 발명의 프로토콜에 따라 유도한 각각의 시기(day0으로부터 day70)에서의 생세포수(마름모꼴) 및 세포 생존률(원)의 그래프를 나타낸다.
도 11의 a는, 본 발명의 프로토콜에 따라 유도한 day42의 미립자를 SCID 마우스의 피하에 투여한지 12주 후의 미립자의 HE 염색, 사프라닌 O 염색, II형 콜라겐의 염색 및 I형 콜라겐의 염색상을 나타낸다. 도 11의 b는, 본 발명의 프로토콜에 따라 유도한 day42의 미립자를 SCID 마우스의 피하에 투여한지 12주 후의 미립자의 SOX9의 염색상을 나타낸다. 도 11의 c는, 본 발명의 프로토콜에 따라 유도한 day42의 미립자를 SCID 마우스의 피하에 투여한지 12주 후의 미립자의 사람 VIMENTIN 및 DAPI의 염색상 및 위상차 현미경상을 나타낸다. 도 11의 d는, 본 발명의 프로토콜에 따라 유도한 day42의 미립자를 SCID 마우스의 피하에 투여한지 4주 후 및 12주 후의 각각의 조직에서의 사람 베타-액티빈(ACTB) 및 마우스 베타-액티빈(Actb)의 발현량을 RT-PCR로 측정한 결과 나타낸다.
도 12는, iPS세포 유래의 세포를 피하 이식한 후의 조직에서, HE 염색(위쪽 이미지), 사프라닌 O 염색(중앙 이미지) 및 X형 콜라겐 항체에서의 면역 염색(아랫쪽 이미지) 결과를 나타낸다. 우측 이미지는, 좌측 이미지의 프레임 내의 확대도이며, 스케일 바는 좌측 이미지에서는 500㎜, 중앙 및 우측 이미지에서는 50㎜를 나타낸다.
도 13의 a는, 본 발명의 프로토콜에 따라 유도한 day28 미립자를 SCID 래트의 관절에 투여한지 1주 후(좌측 이미지) 및 4주 후(우측 이미지)의 HE 염색 및 사람 VIMENTIN 면역 염색상 및 톨루이딘블루 염색 및 II형 콜라겐의 면역 염색상을 나타낸다. 도 13의 b는, 본 발명의 프로토콜에 따라 유도한 day28 미립자를 SCID 래트의 관절에 투여한지 1주 후(좌측 이미지) 및 4주 후(우측 이미지)의 HE 염색 및 II형 콜라겐의 면역 염색상을 나타낸다. 도 13의 c는, 본 발명의 프로토콜에 따라 유도한 day28 미립자를 SCID 래트의 관절에 투여한지 4주 후 및 12주 후의 각각의 조직에서의 사람 베타-액티빈 (ACTB) 및 래트 베타-액티빈(Actb)의 발현량을 RT-PCR로 측정한 결과를 나타낸다.
Claims (16)
- 하기 공정:
(i) 다능성 줄기세포를 접착 배양함으로써 중배엽 세포를 유도하는 공정,
(ii) 상기 공정 (i)에서 얻어진 세포를 아스코르빈산, BMP2, TGFβ 및 GDF5를 포함하는 배양액 중에서 접착 배양하는 공정, 및
(iii) 상기 공정 (ii)에서 얻어진 세포를 아스코르빈산, BMP2, TGFβ 및 GDF5를 포함하는 배양액 중에서 부유 배양하는 공정
을 포함하는, 다능성 줄기세포(幹細胞)로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (iii)에서 얻어진 세포를 혈청을 함유하는 배양액 중에서 배양하는 공정을 더 포함하는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (i), (ii) 및 (iii)의 공정에서 사용하는 배양액이, 1%FBS를 더 포함하는 배양액인, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (iii)이, 상기 공정 (ii)에서 얻어진 세포를 분리 용액을 사용하지 않고, 부유 배양을 행하는 공정인, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (i)의 중배엽 세포를 유도하는 공정이, Wnt3a 및 액티빈A를 포함하는 배양액 중에서 배양하는 공정인, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (i)이 5일 이하로 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (ii)가 15일 이하로 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항에 있어서,
상기 공정 (iii)이 10일 이상 30일 이하로 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제6항에 있어서,
상기 공정 (i)이 3일간 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제7항에 있어서,
상기 공정 (ii)가 11일간 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제8항에 있어서,
상기 공정 (iii)이 14일 이상 28일 이하로 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 삭제
- 삭제
- 삭제
- 삭제
- 삭제
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