KR101785155B1 - Tim-3을 표적으로 하는 뇌손상 질환 치료용 조성물 및 이의 스크리닝 방법 - Google Patents
Tim-3을 표적으로 하는 뇌손상 질환 치료용 조성물 및 이의 스크리닝 방법 Download PDFInfo
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Abstract
Description
도 2는 일차배양한 신경교세포에서 HIF-1α가 TIM-3의 프로모터에 결합하고 그 발현을 조절한다는 것을 보여준다. (a) BV2세포에 20% O2또는 1% O2환경을 24시간 유지한 뒤 TIM-3의 세포표면 발현양상을 PE가 결합된 TIM-3 항체로 염색하고 형광이용세포분류기를 사용하여 분석하였다. 3번의 독립적인 실험을 통해 얻은 결과를 막대그래프로서 나타내고 평균값의 변화 (± s.d.)를 정상환경 샘플과 비교하여 나타낸 것이다. (b) 생쥐로부터 배양한 신경교세포를 24시간 동안 정상환경과 저산소 환경에서 배양하고, 그 세포들을 Tim-3 항체를 사용하여 면역세포화학법을 통해 TIM-3의 발현을 확인하였다. (c,d) 생쥐로부터 일차배양한 신경교세포와 신경세포를 24시간 동안 정상환경과 저산소 환경에서 배양하고, 역전사 효소 유전자 증폭방법으로 TIM-3와 actin의 발현 정도를 측정하였다. 발현 변화를 독립적으로 3번 반복한 실험을 통해 평균값 변화 (± s.d.) 를 그래프로 보여주고 있다. (NS, 통계가 유효하지 않음, StudentNewmanKeuls test). (e) 생쥐로부터 유래된 신경교세포를 24시간 동안 정상환경과 저산소 환경에서 배양하고 면역침강정제법을 HIF-1 항체와 대조군 IgG 가지고 수행하였다. 결과는 3번 독립적인 실험을 통해서 그래프로 나타낸것이다. (f) HIF-1α +f/+f 생쥐에서 유래된 신경교세포에 Ad-GFP or Ad-Cre/GFP 바이러스를 감염시키고, 이 감염된 세포에 TIM-3-luciferase reporter(Tim-3 프로모터 유전자가 들어있는 vector)constructs 을 형질 주입하고 24시간 동안 정상환경과 저산소 환경에서 배양하였다. 프로모터 유전자 발현 활성을 ratio of luciferase activity/β-galactosidase activity로서 표현하였다. (g,h) 역전사 효소 유전자 증폭방법 (g) 과 western blot 분석법은 (h) primer 와 항체를 사용하여 24시간 동안 정상환경과 저산소 환경아래에서 수행하였다. 이 데이터는 독립적으로 3번 반복실험을 통해 나타낸 것이다. 그래프는 저산소 환경안에서 Ad-GFP가 감염된 세포들에 비해서 TIM-3 유전자 전사와 단백질 발현량을 비교하여 보여주는 것이다. IP, 면역침강
도 3은 TIM-3의 차단은 저산소 허혈성 뇌졸증후에 유도되는 뇌손상을 의미 있게 감소시킨다는 것을 보여준다. (a) IgG (n=12)와 TIM-3 blocking 항체 (n=12) 100μg 을 처리한 저산소 허혈성 뇌졸증 모델 생쥐로부터TTC 염색된 뇌 절편의 이미지를 나타낸 대표 그림. 경색 volume은 image J 프로그램을 통해 분석하였고 손상된 동측성 부위를 백분율로 표현하였다. (b) 저산소 허혈성 뇌졸증 유도 24시간 후 TIM-3 항체를 처리한 생쥐 (n=4)와 IgG (n=4)를 처리한 생쥐로부터 얻은 MRI(자기 공명 영상법) 대표 사진. (c) 저산소 허혈성 뇌졸증 유도 24시간 후 TIM-3 항체를 처리한 생쥐 (n=4)와 IgG (n=4)를 처리한 생쥐로부터 얻은 T2-MRI(자기 공명 영상법) 대표 사진. (d) 부종의 형성 정도를 T2-weighted MRI images and ADC map을 통해서 얻었다. (e) 저산소 허혈성 뇌졸증 유도 24시간 후 TIM-3 항체를 처리한 생쥐와 IgG 를 처리한 생쥐로부터 얻은 뇌 절편안에서 NeuN(신경세포) cleaved caspase-3(세포사멸을 detection 하는 항체)로 면역조직화학법을 하고 confocal 현미경으로 측정한 대표 사진. Scale bar, 50μm. 그래프는 NeuN과 cleaved caspase-3 항체로 염색된 세포수를 mm2 당 평균 개수를 보여준다. (f) 저산소 허혈성 뇌졸증 유도 24시간 후 TIM-3 항체를 처리한 생쥐와 IgG를 처리한 생쥐로부터 얻은 대측성 피질과 동측성 피질안에서 full-length PARP 단백질(세포사멸을 나타내는 단백질) 발현을 나타낸 western blot 사진. 그래프는 full-length PARP 의 레벨을 비교하여 보여준 것이다. 모든 데이터는 3번의 독립된 실험으로부터 유의한 값으로 나타냈다
도 4는 TIM-3 차단 항체가 호중구의 이동을 감소시킨다는 것을 보여준다. 역전사 효소 유전자 증폭방법 (a) 및 웨스턴 블랏 분석법 (b)을 IgG 와 TIM-3 blocking 항체가 처리된 저산소 허혈성 뇌졸증 모델 생쥐에서 MPO 발현을 측정하기 위해서 사용하였다. 그래프는 MPO 레벨을 비교하여 보여준 것이다. (c) 저산소 허혈성 뇌졸증 유도 24시간 후 TIM-3 항체를 처리한 생쥐와 IgG 를 처리한 생쥐로부터 얻은 뇌 절편 안에서 MPO 와 Gr-1 항체로 면역조직화학법을 하고 confocal 현미경으로 측정한 대표 사진. Scale bar, 50μm. 그래프는 MPO와 Gr-1 항체로 염색된 세포수의 mm2 당 평균 개수를 보여준다 (± s.d.). 저산소 허혈성 뇌졸증 모델 생쥐로부터 유래된 (d) 대뇌 피질과 (e) 기저부위에서 얻은 뇌 절편을 MPO항체와 Gr-1 항체를 사용하여 면역조직화학법을 수행하고, MPO와 Gr-1이 염색된 세포들을 mm2 당 세포수를 세었다.
도 5는 생체내와 생체외 모두에서 TIM-3의 차단은 대표적인 두개의 호중구 화학주성인자들의 발현을 감소시킨다는 것을 보여준다. (a) 생쥐로부터 일차배양한 신경교세포(2 × 105)를 트랜스 웰의 low chamber에 깔고 TIM-3 와 대조군 IgG 항체를 그림에 나타난 대로 우선 처리 한 후, 비장세포 5 × 105 를 upper chamber에 올린다. 저산소 상황에서 24시간 배양 후, 비장세포 low chamber에 이동된 정도를 형광이용세포분류기를 사용하여 분석하였다. 독립적인 3번의 실험을 통하여 low chamber로 이동한 Gr-1highCD11bhigh 세포의 %를 평균값±s.d로 표현하였다. (b) Gr-1highCD11bhigh 인 호중구를 C57BL/6 생쥐의 골수에서부터 분리하고, IgG 와 TIM-3 항체를 처리한 신경교세포와 함께 저산소환경에서 배양한다. 3번의 독립적인 실험으로부터 얻은 결과는 IgG를 처리한 세포를 1로 보았을 때 감소된 정도를 나타낸다. (c) 역전사 효소 유전자 증폭법을 IgG와 TIM-3를 처리한 저산소 허혈성 뇌졸증 모델로부터 얻은 조직에 대해서 수행하였다. (d) 그래프는 actin 으로 보정하여 나타낸 결과를 보여주는 것이다 (n=3). (e) 생쥐로부터 유래된 신경교세포에 IgG 와 TIM-3 항체를 처리하고 정상환경과 저산소 환경에서 24시간 동안 배양한다. CXCL1과 IL-1beta 전사레벨은 역전사 효소 유전자 증폭법에 의해 결정하였다. 그래프는 독립적으로 3번 실험한 결과로부터 나온 것이다. NS, 유효성이 없다.
도 6은 저산소에 의해 유도되는 호중구의 이동은 HIF-1이 결여된 환경에서 감소한다는 것을 보여준다. (a) HIF - 1α +f/+f 생쥐로부터 일차배양한 신경교세포(2 × 105)에 Ad-GFP or Ad-Cre/GFP 바이러스를 감염시키고, 트랜스 웰의 low chamber에 놓고, 5 × 105 를 upper chamber에 올린다. 저산소 상황에서 24시간 배양 후, 비장세포가 low chamber에 이동된 정도를 형광이용세포분류기를 사용하여 분석하였다. (b) Gr-1highCD11bhigh 인 호중구를 C57BL/6 생쥐의 골수에서부터 분리하고, HIF - 1α +f/+f 생쥐로부터 일차배양한 신경교세포를 Ad-GFP 또는 Ad-Cre/GFP 바이러스로 감염시켜 호중구 세포와 같이 저산소 환경에서 배양한다. 3번의 독립적인 실험을 통해 얻은 결과들은 Ad-GFP 감염된 HIF - 1α +f/+ 생쥐의 신경교세포와 비교하여 호중구 세포의 이동변화를 나타낸 것이다 (c) CXCL1과 IL-1beta 전사레벨은 Ad-GFP 또는 Ad-Cre/GFP바이러스를 감염시킨 신경교세포를 정상환경과 저산소환경에서 24시간동안 배양하여 그 발현을 확인하였다. (d)그래프는 real-time quantitative PCR 로부터 얻은 결과이다.
도 7은 LysM - Hif - 1α -/- 형질전환 쥐에서 저산소 허혈성 뇌졸증에 의해 유도된 뇌손상이 감소된다는 것을 보여주는 실험결과이다. (a) HIF - 1α +f/+f 또는 LysM -Hif-1α -/- 생쥐로부터 배양한 신경교세포에서 표시된 프라이머를 이용하여 역전사 효소 유전자 증폭법을 수행하였다 (b) TIM-3 유전자 전사 레벨을 HIF - 1α +f/+f or LysM-Hif-1α -/- 생쥐(n=3)의 대측성 피질과 허혈성 뇌졸증이 유도된 동측성 피질로부터 유래된 뇌조직으로부터 확인하였다. (c) 24시간 동안 저산소 허혈성 뇌졸증이 유도된 HIF - 1α +f/+f (n=12) or LysM - Hif - 1α -/- 생쥐 (n=12) 부터 TTC 염색된 뇌 절편의 이미지를 나타낸 대표 그림. 경색 volume은 image J 프로그램을 통해 분석하였고 손상된 동측성 부위를 백분율로 표현하였다. (d) 저산소 뇌졸증 24시간 후 HIF-1α +f/+f or LysM - Hif - 1α -/- 생쥐로부터 얻은 뇌 절편안에서 NeuN (신경세포를 detection 하는 항체) cleaved caspase-3 (세포사멸을 detection 하는 항체)로 면역조직화학법을 하고 confocal 현미경으로 측정한 대표 사진. Scale bar, 50μm. 그래프는 NeuN과 cleaved caspase-3 항체로 염색된 세포수의 mm2 당 평균 개수를 보여준다. (±s.d. 3번 독립적으로 실험)
도 8은 LysM-Hif-1a-/- 생쥐에 LV-TIM3-GFP의 두개강 접종은 뇌경색 범위와 신경학적 후유증을 증가시킨다는 것을 보여주는 실험결과이다. (a) IVI spectrum system (Xenogen IVIS-200)을 사용하여 PBS, GFP가 과발현되는 렌티바이러스를 접종한 생쥐, 그리고 TIM-3와 GFP가 과발현된 렌티바이러스를 접종한 생쥐의 형광 이미지를 측정한 대표 그림(excitation filter, from 445 to 490nm, and emission filter, from 515 to 575nm). (b) LV-TIM3-GFP 또는 LV-GFP를 접종한 생쥐로부터 TTC 염색된 뇌 절편의 이미지를 나타낸 대표 그림. (c,d) 경색 크기 (c, n=6 for LV-GFP or n=5 for LV-TIM3-GFP) and 신경학적 휴유증 (d, n=6 for each group)은 저산소 허혈성 뇌졸증 유도 24시간 후 검사하였다.
도 9는 저산소 뇌환경에서 발생 가능한 TIM-3 관련 사건의 모식도이다. 저산소 환경 의존적 HIF-1a의 활성은 소교세포와 성상세포에서 TIM-3 발현을 증가시킨다. HIF-1/TIM-3축의 활성화는 호중구 유인물질 생성과 저산소 지역으로 호중구의 침윤을 유도한다. 호중구의 비정상적인 침윤현상은 과도한 염증반응을 유도하고 이어서 뇌의 병태생리학적 환경에 원인이 된다.
도 10은 1% 산소조건 및 20% 산소조건 하에서 일차 배양 교세포 또는 BV2 미세아교세포에 TIM-3의 shRNA를 각각 세포 감염 시킨 후, PCR 및 면역세포 화학법을 통해 세포 내에서 TIM-3의 발현정도를 비교 분석한 결과를 나타낸 것으로, 10A는 일차 배양 교세포의 결과를, 10B는 BV2 미세아교세포 결과를 나타낸 것이며, 10A에서 a는 PCR 분석결과이고, b는 면역세포 화학법을 나타낸 것이다.
Claims (13)
- TIM-3 (T-cell immunoglobulin and mucin domain protein 3)에 결합하거나 이와 반응하여 TIM-3의 활성을 특이적으로 억제 또는 감소시키는 길항 항체; 또는 TIM-3의 발현을 특이적으로 억제 또는 감소시킬 수 있는, TIM-3 유전자 또는 그의 단편에 대한 shRNA를 유효성분으로 포함하는 저산소 허혈성(hypoxia-ischemia) 뇌손상 질환의 예방 또는 치료용 약학적 조성물.
- 삭제
- 제1항에 있어서,
상기 TIM-3는 서열번호 1의 아미노산 서열로 표시되는 것을 특징으로 하는 조성물. - 제1항에 있어서,
상기 TIM-3 유전자는 서열번호 2의 염기서열로 표시되는 것을 특징으로 하는 조성물. - 제1항에 있어서,
상기 조성물은 HIF-1 (hypoxia-inducible factor-1)의 발현 또는 활성을 억제시키는 것을 특징으로 하는 조성물. - 제1항에 있어서,
상기 조성물은 호중구 화학주성인자(neutrophil chemotactic factor)의 발현 또는 활성을 감소시키는 것을 특징으로 하는 조성물. - 삭제
- (a) TIM-3가 발현되는 세포 또는 동물모델에 후보 물질을 처리하는 단계;
(b) 상기 후보 물질 처리 후, TIM-3의 발현 또는 활성 정도를 측정하는 단계; 및
(c) 상기 TIM-3의 발현 또는 활성 정도가 후보 물질을 처리하지 않은 대조군에 비해 감소한 후보 물질을 선별하는 단계를 포함하는 저산소 허혈성(hypoxia-ischemia) 뇌손상 질환 치료제의 스크리닝 방법. - 제8항에 있어서,
상기 (b) 단계의 측정은 면역조직화학염색, PCR, RT-PCR, 웨스턴 블랏, ELISA 또는 단백질칩으로 구성된 군 중에서 선택되는 방법으로 수행하는 것을 특징으로 하는 방법. - 제8항에 있어서,
상기 선별한 후보물질이 대조군에 비하여 HIF-1의 발현 또는 활성을 억제시키는지 여부를 추가로 분석하는 단계를 더 포함하는 것을 특징으로 하는 방법. - 제8항에 있어서,
상기 세포는 신경교세포(glial cell)인 것을 특징으로 하는 방법. - 제8항에 있어서,
상기 동물모델은 저산소 허혈성(hypoxia-ischemia) 뇌손상 질환 모델인 것을 특징으로 하는 방법. - 삭제
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