KR101743959B1 - 고분자 네트워크를 이용한 유전자 전달체 및 시스템 - Google Patents
고분자 네트워크를 이용한 유전자 전달체 및 시스템 Download PDFInfo
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- KR101743959B1 KR101743959B1 KR1020160035848A KR20160035848A KR101743959B1 KR 101743959 B1 KR101743959 B1 KR 101743959B1 KR 1020160035848 A KR1020160035848 A KR 1020160035848A KR 20160035848 A KR20160035848 A KR 20160035848A KR 101743959 B1 KR101743959 B1 KR 101743959B1
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Abstract
Description
도 2는 PBA가 결합된 PEI(PBA-PEI) 및 갈락투론산이 결합된 PEI(Gal-PEI)의 1H-NMR 결과이다.
도 3은 PBA가 결합된 PEI(PBA-PEI) 및 갈락투론산이 결합된 PEI(Gal-PEI)의 FT-IT 결과이다.
도 4는 PBA가 결합된 PEI(PBA-PEI) 및 갈락투론산이 결합된 PEI(Gal-PEI)의 플루오레사민 어세이 방법(a)) 및 결과(b))이다.
도 5는 정상 상태 형광 소광 어세이(Steady-state fluorescence quenching)를 통한 당과 PBA 사이의 결합 정도를 보여준다.
도 6은 PBA가 결합된 PEI(PBA-PEI) 및 갈락투론산이 결합된 PEI(Gal-PEI)을 혼합하여 형성한 고분자 네트워크(crossPEI)를 보여낸다.
도 7은 겔 투과 크로마토그래피를 통한 고분자 네트워크의 분자량을 보여준다.
도 8은 페닐보론산, 당 및 가지형 저분자량 고분자로 형성된 고분자 네트워크의 안정성을 보여준다.
도 9는 PBA가 결합된 PEI(PBA-PEI), 갈락투론산이 결합된 PEI(Gal-PEI) 및 고분자 네트워크(crossPEI)의 MTT 분석을 통한 세포독성 결과를 보여준다.
도 10은 고분자량 PEI(25kDa), PBA가 결합된 PEI(PBA-PEI), 갈락투론산이 결합된 PEI(Gal-PEI) 및 고분자 네트워크(crossPEI) 각각이 DNA와 결합한 폴리플렉스의 산성 조건(pH 5) 및 ATP 농도에 따른 아가로스 겔 전기영동 결과를 보여준다.
도 11은 고분자 네트워크(crossPEI)가 DNA와 결합한 폴리플렉스에서 pH 및 ATP 농도 변화에 따른 수화부피측정(Hydrodynamic volume) 결과(a))와 고분자량 PEI(25kDa)가 DNA와 결합한 폴리플렉스에서 pH 및 ATP 농도 변화에 따른 수화부피측정(Hydrodynamic volume) 결과(b))를 보여준다.
도 12는 PBA가 결합된 PEI(PBA-PEI), 갈락투론산이 결합된 PEI(Gal-PEI) 및 고분자 네트워크(crossPEI)에 의한 유전자 전달 정도를 보여준다.
도 13은 바필로마이신(bafilomycin, Baf) A1 및 요오도아세트산(iodoacetic acid, IAA)를 처리하였을 때 유전자 전달 정도를 보여준다.
도 14는 PBA-PEG-CrossPEI/DNA 폴리플렉스에서 표면으로 노출되어 있는 PBA에 의한 종양 표적화를 나타낸다.
도 15는 생체내(in-vivo)에서 퍼길레이션된 고분자 네트워크(PEG-CrossPEI)및 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI)에 의한 유전자 전달 정도를 보여준다.
도 16은 유세포 분석을 통해 퍼길레이션된 고분자 네트워크(PEG-CrossPEI), 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI) 및 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI)와 PBA를 함께 처리한 경우 각각의 폴리플렉스의 세포 내 유입 정도를 보여준다.
도 17은 공초점 주사 레이저 현미경 관찰을 통해 퍼길레이션된 고분자 네트워크(PEG-CrossPEI), 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI) 및 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI)와 PBA를 함께 처리한 경우 각각의 폴리플렉스의 세포 내 유입 정도를 나타낸다.
도 18은 생체내(in-vivo)에서 퍼길레이션된 고분자 네트워크(PEG-CrossPEI)및 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI)에 의한 종양 표적화 정도를 보여준다.
도 19는 생체내(in-vivo)에서 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI)에 의한 종양 증식 억제를 보여준다.
도 20은 생체내(in-vivo)에서 퍼길레이션을 통해 페닐보론산이 접합된 고분자 네트워크(PBA- PEG-CrossPEI)에 의한 항혈관신생 유전자 백터의 종양 특이적 전달 결과를 보여준다.
도 21은 퍼길레이션에 의해 페닐보론산이 접합된 고분자 네트워크를 포함하는 유전자 전달체의 구성 및 생체내에서의 유전자 전달 시스템을 나타낸다.
Claims (9)
- 페닐보론산이 아미드 결합으로 결합된 폴리에틸렌이민 및 당이 아미드 결합으로 결합된 폴리에틸렌이민을 포함하고,
상기 페닐보론산이 상기 당의 다이올과 선택적으로 결합하여 형성된 보론산 에스터(boronate ester) 결합을 통해 고분자 네트워크를 형성하며,
세포 내의 산성 조건 및 ATP 농도변화에 의한 유전자 전달을 특징으로 하는 유전자 전달체. - 삭제
- 제1항에 있어서,
상기 페닐보론산은 암세포 표면에 과발현된 N-아세틸뉴라민산(N-Acetylneuraminic)과 결합하는 것을 특징으로 하는 유전자 전달체. - 삭제
- 제1항에 있어서,
상기 당은 포도당, 과당, 갈락토스 및 만노오즈로 이루어진 군에서 선택되는 하나 이상인 유전자 전달체. - 삭제
- 제1항에 있어서,
상기 폴리에틸렌이민은 1.2kDa 내지 2.0kDa인 유전자 전달체. - 제1항에 있어서,
상기 산성조건은 pH가 4.5 내지 5.5 인 유전자 전달체. - 제1항에 있어서,
ATP 농도 변화는 3mM 이상인 유전자 전달체.
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