KR101466511B1 - 저산소증 관련 질환의 진단 및 치료용 저산소 감응형 나노입자 - Google Patents
저산소증 관련 질환의 진단 및 치료용 저산소 감응형 나노입자 Download PDFInfo
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Abstract
Description
도 2a는 DS수가 8(HR-NP8) 및 11(HR-NP11)일때의 입자 크기 분포 및 TEM 이미지를 나타낸 것이다.
도 2b는 HR-NP8 및 HR-NP11 나노입자의 체내 환경에서의 입자 크기 변화를 나타낸 것이다.
도 3은 정상산소 및 저산소 환경에서 HR-NP8 및 HR-NP11 나노입자의 제타 전위를 측정한 결과를 나타낸 것이다.
도 4는 정상산소 및 저산소 환경에서 입자(HR-NP8 및 HR-NP11)의 흡수 스펙트라를 측정한 결과를 나타낸 것이다.
도 5는 정상산소 및 저산소 환경에서 DOX가 로딩된 입자의 in vitro DOX 방출 거동을 나타낸 그래프이다.
도 6a는 DOX가 로딩되지 않은 나노입자의 in vitro 세포 독성을, 도 6b는 DOX가 로딩된 나노입자 및 free DOX의 세포 독성을 나타낸 것이다.
도 7은 (a) 정상산소 및 (b) 저산소 환경에서 HR-NPs로부터 DOX의 세포 내 방출을 나타낸 이미지이다.
도 8은 종양-배양 생쥐의 생체 내(in vivo) HR-NP11의 비-침습성 형광 이미지이다. (a) SCC7 종양이 배양된 무흉선 누드 생쥐의 Cy5.5-HR-NP11 정맥 주사 이후, 시간-의존적 몸 전체 이미지를 나타낸 것이고, (b) HR-NP11 주사 하루 이후에 수집된, 정상 장기 및 종양 조직의 탈체(ex vivo) 형광 이미지를 나타낸 것이고, (c) 정상 장기 및 종양 조직의 HR-NP11의 정량화를 나타낸 것으로, 오차 바(error bar)는 그룹 당 5마리 동물들간의 표준 편차를 나타낸 것이고, (d) 저산소 종양 조직의 시간적 스테이닝을 나타낸 것으로, FITC-표식된 단일 클론 항체가 저산소 조직 스테이닝으로 사용된 것을 나타낸 것이다.
도 9는 DOX-HR-NP11의 항종양 효과를 나타낸 것이다. (a) 식염수, free DOX 및 DOX-HR-NP11가 DOX 투여량으로 5mg/kg 만큼 처리된, 이종 이식SCC7 종양의 성장을 나타낸 것이고, (b) 처리 16일 후 종양 무게를 나타낸 것으로, 오차 바(error bar)는 그룹 당 5마리 동물들간의 표준 편차를 나타낸 것이다. (별표(*)는 one-way Anova test로 계산된, 통계적으로 현저한 차이(p < 0.05)를 의미한다.)
도 10은 본 발명의 약물-탑재 저산소 감응형 나노입자(HR-NPs)의 합성 과정 및 생체 내(in vivo) 종양-표적 경로를 나타낸 것이다. 상기 HR-NPs는 종양 사이트에 EPR 효과를 통하여 도달할 수 있으며, 이어서 저산소 조직 세포 내에서 약물을 방출할 수 있다.
샘플 | NI | EDC | NHS |
HR-NP1 | 0.038g (0.18mmol) |
0.138g (0.71mmol) |
0.082g (0.71mmol) |
HR-NP3 | 0.076g (0.36mmol) |
0.276g (1.43mmol) |
0.162g (1.43mmol) |
HR-NP8 | 0.191g (0.9mmol) |
0.690g (3.6mmol) |
0.410g (3.6mmol) |
HR-NP11 | 0.382g (1.8mmol) |
1.380g (7.2mmol) |
0.830g (7.2mmol) |
샘플[a] | FR[b] | DS[c] | Size (nm)[d] | X[e] |
HR-NP1 | 0.2 | 1.86 | - | 1.65 |
HR-NP5 | 0.4 | 3.35 | - | 2.98 |
HR-NP8 | 1.0 | 7.99 | 176.38 ± 3.55 | 7.11 |
HR-NP11 | 2.0 | 11.76 | 192.22 ± 3.42 | 10.47 |
Claims (13)
- 제1항에 있어서, 5,000 내지 1,000,000의 분자량을 갖는 것인, 양친성 고분자.
- 제1항에 있어서, 상기 카르복시메틸 덱스트란은 친수성 백본(backbone)을 형성하고, 상기 화학식 1의 화합물은 아미드 결합으로 결합되어 소수성을 부여함으로써 양친성을 갖는 것을 특징으로 하는 양친성 고분자.
- 제1항에 있어서, 상기 카르복시메틸 덱스트란의 카르복시기 100개당 상기 화학식 1의 화합물이 8 내지 20개가 결합된 것을 특징으로 하는 양친성 고분자.
- 제1항에 있어서, 상기 카르복시메틸 덱스트란의 카르복시기 100개당 상기 화학식 1의 화합물이 8 내지 11가 결합된 것을 특징으로 하는 양친성 고분자.
- 수성 용매 내에서 제1항 내지 제6항 중 어느 한 항의 양친성 고분자가 자가조립을 통해 형성된 나노입자로서,
상기 나노입자는, 상기 화학식 1의 화합물이 내부에 상기 카르복시메틸 덱스트란이 외부에 위치하는 것인, 나노입자.
- 제7항에 있어서, 상기 나노입자는 20 mmHg 이하의 산소 분압 하에서 상기 화학식 1의 화합물의 니트로기가 아미노기로 환원되는 것을 특징으로 하는 나노입자.
- 제7항에 있어서, 평균 직경이 170 nm 내지 500 nm인 것을 특징으로 하는 나노입자.
- 제7항에 있어서, 평균 직경이 170 nm 내지 200 nm인 것을 특징으로 하는 나노입자.
- 제7항에 있어서, 상기 나노입자 내부에 소수성 첨가제를 탑재하고 있는 것을 특징으로 하는 나노입자.
- 제11항에 있어서, 상기 첨가제는 파클리탁셀(paclitaxel), 독소루비신(doxorubicin), 시스플라틴(cis-platin), 도세탁셀(decetaxel), 타목시펜(tamoxifen), 캄토세신(camtothecin), 아나스테로졸(anasterozole), 카보플라틴(carboplatin), 토포테칸(topotecan), 베로테칸(belotecan), 이리노테칸(irinotecan), 글리벡(gleevec), 빈크리스틴(vincristine), 살리실레이트(salicylates), 이부프로펜(ibuprofen), 나프록센(naproxen), 페노프로펜(fenoprofen), 인도메타신(indomethacin), 페닐타존(phenyltazone), 메소트렉세이트(methotrexate), 시클로포스파미드(cyclophosphamide), 메클로에타민(mechlorethamine), 덱사메타손(dexamethasone), 프레드니솔론(prednisolone), 셀레콕시브(celecoxib), 발데콕시브(valdecoxib), 니메슐리드(nimesulide), 코르티손(cortisone), 및 코르티코스테로이드(corticosteroid)로 이루어진 약물 군으로부터 선택된 어느 하나 이상인 것을 특징으로 하는 나노입자.
- 제11항에 있어서, 상기 나노입자는 20 mmHg 이하의 산소 분압 하에서 상기 화학식 1의 화합물의 니트로기가 아미노기로 환원되어 친수성으로 전환되고,
상기 소수성 첨가제가 방출되는 것을 특징으로 하는 나노입자.
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KR20110067157A (ko) * | 2008-10-06 | 2011-06-21 | 아도시아 | 소수성 알코올 유도체에 의해 치환된 카복실 관능기를 포함하는 폴리사카라이드 |
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