KR20160068982A - 신규 연골 세포 유도 방법 - Google Patents
신규 연골 세포 유도 방법 Download PDFInfo
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- KR20160068982A KR20160068982A KR1020167014549A KR20167014549A KR20160068982A KR 20160068982 A KR20160068982 A KR 20160068982A KR 1020167014549 A KR1020167014549 A KR 1020167014549A KR 20167014549 A KR20167014549 A KR 20167014549A KR 20160068982 A KR20160068982 A KR 20160068982A
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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)
- 다음의 공정을 포함하는 다능성 줄기세포(幹細胞)로부터 연골 세포를 제조하는 방법:
(i) 다능성 줄기세포를 접착 배양함으로써 중배엽 세포를 유도하는 공정,
(ii) 상기 공정 (i)에서 얻어진 세포를 BMP2, TGFβ 및 GDF5로 이루어지는 군으로부터 선택되는 1 이상의 물질을 포함하는 배양액 중에서 접착 배양하는 공정, 및
(iii) 상기 공정 (ii)에서 얻어진 세포를 BMP2, TGFβ 및 GDF5로 이루어지는 군으로부터 선택되는 1 이상의 물질을 포함하는 배양액 중에서 부유 배양하는 공정. - 제1항에 있어서,
상기 공정 (iii)에서 얻어진 세포를 혈청을 함유하는 배양액 중에서 배양하는 공정을 더 포함하는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항 또는 제2항에 있어서,
상기 공정 (i), (ii) 및 (iii)의 공정에서 사용하는 배양액이, 1%FBS를 더 포함하는 배양액인, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항 내지 제3항 중 어느 한 항에 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. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 공정 (i)의 중배엽 세포를 유도하는 공정이, Wnt3a 및 액티빈A를 포함하는 배양액 중에서 배양하는 공정인, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항 내지 제5항 중 어느 한 항에 있어서,
상기 공정 (i)이 5일 이하로 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항 내지 제6항 중 어느 한 항에 있어서,
상기 공정 (ii)가 15일 이하로 행해지는, 다능성 줄기세포로부터 연골 세포를 제조하는 방법. - 제1항 내지 제7항 중 어느 한 항에 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. - 제1항 내지 제11항에 기재된 방법으로 제조된 연골 세포를 포함하는, 의약품.
- 제12항에 있어서,
상기 연골 세포가, 연골 세포와 세포외 매트릭스를 포함하는 덩어리인, 의약품. - 제12항 또는 제13항에 있어서,
관절 연골 손상 치료용인, 의약품. - 다능성 줄기세포로부터 유도된 유도 연골 세포로서,
(1) 상기 연골 세포는, COL2A1 유전자의 발현량이, 다능성 줄기세포에서의 대응하는 유전자의 발현량과 비교하여, 적어도 100배이며,
(2) 상기 연골 세포는, SOX9 유전자의 발현량이, 다능성 줄기세포에서의 대응하는 유전자의 발현량과 비교하여, 적어도 250배이며, 및
(3) 상기 연골 세포는, 외래 유전자가 도입되어 있지 않은(단, iPS세포의 제조에 사용한 외래 유전자는 제외함), 유도 연골 세포. - 입체 구조를 가지는 연골상조직(chondroid tissue)으로서,
상기 연골상조직은, 외막 및 상기 외막에 내포된 내용물로 구성되어 있고,
상기 외막은, COL1 선유(線維)를 포함하지만, COL2 선유를 포함하지 않고,
상기 외막의 두께가, 10㎛ 이상 50㎛ 이하이며,
상기 내용물이, COL11 선유, COL2 선유, 프로테오글리칸 및 제15항에 기재된 세포를 포함하는, 연골상조직.
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US12163157B2 (en) | 2018-06-25 | 2024-12-10 | Yipcell Inc. | Method for preparing pellets of chondrocytes from human induced pluripotent stem cells, and use thereof |
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US10100283B2 (en) | 2018-10-16 |
US20160251623A1 (en) | 2016-09-01 |
JP2020036622A (ja) | 2020-03-12 |
JP6635505B2 (ja) | 2020-01-29 |
KR102219743B1 (ko) | 2021-02-23 |
JP7166631B2 (ja) | 2022-11-08 |
WO2015064754A1 (ja) | 2015-05-07 |
EP3064577B1 (en) | 2020-09-09 |
EP3064577A1 (en) | 2016-09-07 |
JPWO2015064754A1 (ja) | 2017-03-09 |
EP3064577A4 (en) | 2017-04-12 |
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