KR102003239B1 - 경구투여용 간암표적성 siRNA 나노전달체 및 이의 제조방법 - Google Patents
경구투여용 간암표적성 siRNA 나노전달체 및 이의 제조방법 Download PDFInfo
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- KR102003239B1 KR102003239B1 KR1020160143512A KR20160143512A KR102003239B1 KR 102003239 B1 KR102003239 B1 KR 102003239B1 KR 1020160143512 A KR1020160143512 A KR 1020160143512A KR 20160143512 A KR20160143512 A KR 20160143512A KR 102003239 B1 KR102003239 B1 KR 102003239B1
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Abstract
상세하게는 상기 나노전달체는 타우로콜린산(TCA)-히알루론산(HA) 결합체를 포함하고 있어서 경구투여 후 위장관을 안전하게 통과하고 소장말단의 ABST를 통하여 흡수되므로 장간순환을 통해 간으로 이동하는 장점이 있으며; 타우로콜린산 -히알루론산 결합체에 포함되어 있는 HA에 의하여 간암세포 또는 간전이 암세포에서 발현되는 CD44 수용체에 대한 표적성을 가지고 있어 간암을 치료할 수 있는 장점이 있고; 독성이 없는 핵단백질인 프로타민 단백질을 사용하여 siRNA-프로타민 단백질 복합체를 제조하므로 세포 흡수시 세포독성이 없고 엔도솜 탈출이 원활히 일어나 siRNA에 의한 유전자침묵(gene silencing) 치료효과가 뛰어난 장점이 있다.
Description
도 2는 HA와 TCA의 결합을 확인할 수 있는 수소핵자기공명스펙트럼을 보여준다. 패널 A)는 TCA, TCA-NPC 및 TCA-NH2의 합성과정, TCA-NH2와 HA와의 합성을 통한 HA-TCA 결합체의 제조과정을 화학식으로 보여주며 패널 B)는 HA-TCA 결합체의 수소핵자기공명 스펙트럼을 보여준다.
도 3은 프로타민 단백질이 siRNA를 봉입한 결과를 보여준다.
도 4는 siRNA-프로타민 단백질 복합체의 첨가몰비에 따른 나노입자(siRNA-프로타민 단백질 복합체)의 크기 및 제타포텐셜(zeta potential) 분석결과를 보여준다.
도 5는 siRNA-프로타민 단백질 복합체의 TEM 이미지를 보여준다.
도 6은 경구투여용 간암표적성 siRNA 나노전달체의 TEM 이미지를 보여준다.
도 7은 pH 및 처리시간에 따른 경구투여용 간암표적성 siRNA 나노전달체의 크기 안정성 분석 결과를 보여준다.
도 8은 경구투여용 간암표적성 siRNA 나노전달체의 혈액내 안정성을 보여준다.
도 9는 free siRNA와 경구투여용 간암표적성 siRNA 나노전달체에 대한 RNase 보호분석법 수행결과를 보여준다.
도 10은 경구투여용 간암표적성 siRNA 나노전달체의 독성을 확인한 결과를 보여준다.
도 11는 경구투여용 간암표적성 siRNA 나노전달체의 담즙산 수용체에 의한 세포 흡수를 확인결과를 보여준다.
도 12는 경구투여용 간암표적성 siRNA 나노전달체의 CD44 수용체의 HA에 의한 세포흡수율 및 CLSM 이미지 분석 결과를 보여준다. 패널 A)는 MDA-MB-231 cell의 CLSM image (scale bar = 20 μm)를 보여주며 패널 B)는 세포흡수 강도를 보여주며 패널 C)는 HepG2 cell의 CLSM 이미지(scale bar = 20 μm)를 보여준다.
도 13은 경구투여용 간암표적성 siRNA 나노전달체에 의해 세포내로 전달된 siRNA가 엔도솜으로부터 탈출하여 세포질에 존재하는 것을 확인한 결과를 보여준다.
| 시료명 | 첨가몰비 (Feed mole ratio, HA : TCA) |
결합몰비 (Binding mole ratio) |
| HA-TCA 10 | 1 : 10 | 8.6 |
| HA-TCA 50 | 1 : 50 | 9.6 |
| HA-TCA 100 | 1 : 100 | 13.3 |
| 시료 | 첨가몰비 (feed mole ratio, nmol) |
크기 (diameter, nm) |
제타포텐셜 [mV] | 봉입률 (%) | |
| siRNA-프로타민 단백질 복합체 | HA-TCA 결합체 | ||||
| HTsRP 2 | 1 | 2.0 | 138 ± 5 | -5.88 ± 0.6 | 97.0 |
| HTsRP 10 | 1 | 10.0 | 208 ± 2.5 | -12.1 ± 0.2 | 96.5 |
| HTsRP 20 | 1 | 20.0 | 237 ± 13 | -16.0 ± 0.2 | 95.1 |
| HTsRP 40 | 1 | 40.0 | 246 ± 6 | -19.5 ± 0.1 | 92.4 |
| * siRNA-프로타민 단백질 복합체는 1:20의 첨가몰비(siRNA : 프로타민 단백질)로 혼합하여 제조한 것임 | |||||
Claims (14)
- (a) siRNA - 프로타민(protamine) 단백질 복합체; 및
(b) 히알루론산(hyaluronic acid) - 타우로콜린산(taurocholic acid) 결합체;
를 포함하는 경구투여용 간암표적성 siRNA 나노전달체에 있어서,
상기 경구투여용 간암표적성 siRNA 나노전달체의 내부에 상기 siRNA - 프로타민 단백질 복합체가 위치하고 상기 siRNA - 프로타민 단백질 복합체의 표면에 상기 히알루론산 - 타우로콜린산 결합체가 코팅된 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 siRNA - 프로타민 단백질 복합체는 양전하 특성을 가지는 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 siRNA - 프로타민 단백질 복합체는 직경이 50 - 100nm이하인 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 siRNA - 프로타민 단백질 복합체는 상기 siRNA 와 상기 프로타민 단백질이 1:10 - 1:70 범위의 첨가몰비(feed mole ratio, siRNA : 프로타민 단백질)로 혼합되어 제조되는 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 4 항에 있어서, 상기 siRNA는 염기수가 20 - 24mer인 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 4 항에 있어서, 상기 프로타민 단백질은 프로타민 P1(protamine P1), 프로타민 1(protamine 1) 및 프로타민 2(protamine 2)로 구성된 군으로부터 선택된 하나 또는 두 가지 이상의 단백질인 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 히알루론산 - 타우로콜린산 결합체는 음전하 특성을 가지는 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 히알루론산 - 타우로콜린산 결합체는 히알루론산과 타우로콜린산이 1:1 - 1:100 범위의 첨가몰비(feed mole ratio, 히알루론산 : 타우로린산)로 혼합되어 제조되는 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 삭제
- 제 1 항에 있어서, 상기 코팅은 상기 siRNA - 프로타민 단백질 복합체와 상기 히알루론산 - 타우로콜린산 결합체가 1:10 - 1:80 범위의 첨가몰비(siRNA - 프로타민 단백질 복합체 : 히알루론산 - 타우로콜린산 결합체)로 혼합하여 제조된 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 경구투여용 간암표적성 siRNA 나노전달체는 음전하 특성을 가지며 직경이 208 - 250nm이고 상기 siRNA - 프로타민 단백질 복합체의 봉입률이 90 - 96.5%인 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항에 있어서, 상기 경구투여용 간암표적성 siRNA 나노전달체는 간암세포 또는 간전이 암세포에 발현되는 히알루론산 수용체(CD44 receptor)에 표적성을 가지는 것을 특징으로 하는 경구투여용 간암표적성 siRNA 나노전달체
- 제 1 항 내지 제 8항 및 제 10항 내지 제 12 항 중 어느 한 항의 경구투여용 간암표적성 siRNA 나노전달체의 약제학적 유효량을 포함하는 간암치료용 약제학적 조성물
- (a) siRNA - 프로타민(protamine) 단백질 복합체 수용액을 제조하는 단계;
(b) 히알루론산(hyaluronic acid) - 타우로콜린산(taurocholic acid) 결합체 분말을 제조하는 단계; 및
(c) 상기 히알루론산(hyaluronic acid) - 타우로콜린산(taurocholic acid) 결합체 분말을 용해시켜 히알루론산(hyaluronic acid) - 타우로콜린산(taurocholic acid) 결합체 용액을 제조한 후 상기 siRNA - 프로타민(protamine) 단백질 복합체 수용액과 혼합하여 상기 siRNA - 프로타민(protamine) 단백질 복합체를 상기 히알루론산(hyaluronic acid) - 타우로콜린산(taurocholic acid) 결합체로 코팅하는 단계;
를 포함하는 경구투여용 간암표적성 siRNA 나노전달체의 제조방법
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