KR101993290B1 - 세포사멸방지용 배지 조성물 및 이를 이용한 배양방법 - Google Patents
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Abstract
또한, 포유동물세포 자신으로부터 나온 물질인 엑소좀을 이용하고 있으므로, 독성이나 부작용과 같은 문제점이 없으며, 세포의 생물학적 산물을 생산하는 기작이나 세포의 활성에도 전혀 영향을 미치지 않으므로 매우 안전할 뿐만 아니라 상기 엑소좀은 해당 포유동물세포의 배양을 통해 쉽게 얻을 수 있기 때문에 매우 경제적이다.
Description
도 2는 실시예 4로 배양한 CHO 세포에 있어서, CHO 세포 내에 엑소좀이 흡수되었는지를 공초점 현미경으로 관찰한 사진이다. 이때, 녹색은 배지 조성물에 첨가한 CHO 유래 엑소좀을 나타내며, 파란색은 CHO 세포의 핵을 나타낸다.
도 3은 실시예 3의 배지 조성물로 배양한 CHO 세포(실험군; w/ exo)와 일반 IMDM 배지로 배양한 CHO 세포(대조군; w/o exo)에 STS를 처리한 후, 이들 각각의 세포 생존율을 측정하여 나타낸 그래프이다.
도 4는 CHO 세포 유래 엑소좀이 첨가되지 않은 IMDM 배지로 배양한 CHO 세포(대조군; w/o exo)에 STS를 처리한 후, 이의 세포 생존율을 유세포 분석기를 이용하여 측정한 결과 그래프이다.
도 5는 실시예 3의 배지 조성물로 배양한 CHO 세포(실험군; w/ exo)에 STS를 처리한 후, 이의 세포 생존율을 유세포 분석기를 이용하여 측정한 결과 그래프이다.
도 6은 실험군(w/ exo)과 대조군(w/o exo)에 존재하는 미토콘드리아의 상대적인 막 전위 변화량(%;relative mitochondrial membrane potential(%))을 측정하여 나타낸 그래프이다.
Claims (12)
- CHO 세포 배양액으로부터 추출한 엑소좀 및 기본배지를 포함하고,
상기 CHO 세포 배양액은 CHO 세포를 배양한 후의 배양물인 것을 특징으로 하는, CHO 세포 배양과정에서 CHO 세포의 사멸방지용 배지 조성물. - 삭제
- 삭제
- 제1항에 있어서,
상기 CHO 세포 배양액은 50 내지 100 시간동안 배양한 것을 특징으로 하는 배지 조성물. - 제1항에 있어서,
상기 엑소좀의 배지 조성물 내에 농도는 1 × 104 내지 1 × 1012 입자수(particle)/㎠인 것을 특징으로 하는 배지 조성물. - 제1항에 있어서,
상기 기본배지는 M199/F12 배지, MEM-alpha 배지, 저농도 글루코오스 함유 DMEM 배지, MCDB 131 배지, IMDM 배지, K-SFM 배지, DMEM/F12 배지, 및 EGM-2 배지로 이루어진 군으로부터 선택되는 어느 하나의 배지를 기본배지로 한 것을 특징으로 하는 배지 조성물. - 1) 포유동물세포를 기본배지에서 배양하는 단계;
2) 상기 1) 단계의 배양액으로부터 엑소좀을 분리하는 단계;
3) 상기 분리된 엑소좀을 기본배지에 혼합하여 포유동물세포의 세포사멸방지용 배지 조성물을 제조하는 단계; 및
4) 상기 배지 조성물에 포유동물세포를 접종하여 배양하는 단계;를 포함하고,
상기 1) 단계의 포유동물세포와 상기 4) 단계의 포유동물세포는 서로 동일하며, 상기 포유동물세포는 차이니즈 햄스터 난소(CHO;Chinese Hamster Ovary) 세포인 것을 특징으로 하는 포유동물세포의 배양방법. - 삭제
- 삭제
- 제7항에 있어서,
상기 1) 단계의 배양 시간은 50 내지 100 시간인 것을 특징으로 하는 배양방법. - 제7항에 있어서,
상기 1) 단계에서 기본배지와 상기 3) 단계에서의 기본배지는 서로 동일한 것을 사용하며, 상기 기본배지는 M199/F12 배지, MEM-alpha 배지, 저농도 글루코오스 함유 DMEM 배지, MCDB 131 배지, IMDM 배지, K-SFM 배지, DMEM/F12 배지, 및 EGM-2 배지로 이루어진 군으로부터 선택되는 어느 하나의 배지인 것을 특징으로 하는 배양방법. - 제7항에 있어서,
상기 3) 단계에서 제조된 배지 조성물 내에 상기 엑소좀은 1 × 104 내지 1 × 1012 입자수(particle)/㎠ 농도로 포함되어 있는 것을 특징으로 하는 배양방법.
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