JP5969164B2 - 電荷結合と生分解性共有結合により同時に連結された高分子−siRNAナノ粒子担体及びその製造方法 - Google Patents
電荷結合と生分解性共有結合により同時に連結された高分子−siRNAナノ粒子担体及びその製造方法 Download PDFInfo
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Description
本発明は、siRNAを生体内で効率的に送達するために、高分子とsiRNAを結合して製造されたsiRNA担体を提供するが、前記siRNA担体は、高分子とsiRNAが電荷結合と生分解性共有結合により同時に結合されたことを特徴とする。
前記Aは、電荷と官能基とを有する高分子である。具体的には、生体適合性を有する全ての高分子を使用することができ、特に、疾病組織への蓄積効率が高く、薬物担体として使用される生体高分子であるキトサン、グリコールキトサン、プロタミン、ポリリジン、ポリアルギニン、ポリエチレンイミン、デキストラン、ヒアルロン酸、アルブミン、又はこれらの化学的誘導体のうち、正電荷と官能基を同時に有するものであれば、特に使用に制限はない。合成高分子としては、PEI(polyethylenimine)、PLGA(poly lactic glycolic acid)、及びポリ−L−リジン(poly-L-lysine)などを使用することができるが、必ずしもこれに限定されるものではない。
(b)siRNAの片末端又は両末端に官能基を導入するか、又は活性化する段階
(c)前記段階(a)で製造した高分子と前記段階(b)で製造したsiRNAを電荷結合及び生分解性共有結合により安定して結合してナノ粒子を製造する段階
グリコールキトサンは、生体毒性がなく、癌組織に効率的に蓄積されるが、正電荷が弱いため、それ自体ではsiRNAとの効率的な電荷結合が不可能である。従って、ヘテロ二官能性架橋剤(heterobifunctional cross linker)であるsulfo−LC−SPDPを用いて、アミノ基がピリジルジチオール基で活性化されたグリコールキトサン誘導体を形成した。
チオール基を有する高分子poly−siRNAは、安定性と負電荷量が増加し、電荷結合とジスルフィド結合を同時に用いて、これをチオール基が導入された親水性高分子グリコールキトサン(TGC)に連結して複合体を形成した。
poly−siRNAとTGC(TGC2、TGC3、5:1の重量比)で製造された複合体ナノ粒子を、siRNA濃度が50nMになるように、対照群(Control、Mono−siRNA/LF、Poly−siRNA/LF)と共に、RFPが発現する黒色腫細胞株であるRFP−B16/F10(1.2×105/dish)細胞に処理し、24時間後にRFP発現抑制効能を蛍光顕微鏡画像で取得した。本実験では、赤色蛍光タンパク質(RFP)に対するsiRNAを製造して使用し、対照群として使用したMono−siRNA/LF、Poly−siRNA/LFのLFは、In vitrogen社のLipofectamineTM 2000を示すものである(図5)。TGCによるpoly−siRNA送達がRFP遺伝子発現抑制に効率的であることを確認した。
近赤外線蛍光物質(Cy5.5)で修飾されたpoly−siRNAを用いて形成したpoly−siRNA−TGC複合体を、SCC7癌細胞が移植されたマウスの尾静脈に注射した後、時間別に非侵襲的光学画像によりマウス体内での物質の循環を観察した。担体TGCと結合させることなく注射されたpoly−siRNAやpoly−siRNA−PEI複合体に比べて、TGCと複合体を形成したCy5.5標識poly−siRNAの場合、癌組織に特異的に蓄積されることを確認し、特に、TGC3と複合体を形成した実験群で癌標的性と体内保存性が最も優れていることを確認した(図6)。
ヌードマウスに1×106個のRFP−B16/F10黒色腫細胞株を背中の腰の下に注射して動物癌モデルを作成し、光学装置により、マウスからRFP蛍光が検出されたときからpoly−siRNA−TGC3複合体を2日間隔で2回(day0とday2)尾静脈に注射し、血管を介して送達されたpoly−siRNAによる癌組織中のRFP発現効果を比較した。図7は、poly−siRNA−TGC3複合体を注射した場合に癌組織のRFPの発現が著しく減少したことを示す。また、第6日目に癌組織を摘出して癌組織中のRNAを全て抽出し、逆転写ポリメラーゼ連鎖反応法(reverse transcription polymerase chain reaction)で組織中のRFPの発現量を比較し、poly−siRNA−TGC3を注射したマウスの組織での効率的なRFP発現減少を確認した。
Claims (10)
- 高分子(A)とsiRNA(B)が電荷結合とジスルフィド結合により同時に連結された下記構造:
A−B
(ここで、Aは、正電荷と官能基とを有する高分子であって、キトサン又はグリコールキトサンであり、Bは、片末端又は両末端に前記高分子の官能基とジスルフィド結合を形成できる官能基を有し、複数のsiRNAがジスルフィド結合により連結されたpoly−siRNAである)の高分子−siRNA担体。 - 前記poly−siRNA(B)は、15〜30個の単量体siRNAからなる、請求項1に記載の高分子−siRNA担体。
- 前記poly−siRNA(B)は、100〜400個のヌクレオチドからなる、請求項1に記載の高分子−siRNA担体。
- 前記高分子(A)と前記poly−siRNA(B)が電荷結合とジスルフィド結合により同時に連結されたものであり、高分子とpoly−siRNAが電荷結合のみで連結された場合に比べて生体内安定性がさらに増加したことを特徴とする、請求項1に記載の高分子−siRNA担体。
- 前記高分子−siRNA担体のサイズが10〜2000nmである、請求項1に記載の高分子−siRNA担体。
- 前記高分子−siRNA担体の分子量が103〜107Daである、請求項1に記載の高分子−siRNA担体。
- 前記高分子−siRNA担体は、水系で電荷結合とジスルフィド結合を同時に用いてsiRNAと高分子が連結されているものである、請求項1に記載の高分子−siRNA担体。
- 癌の治療のために使用されるものである、請求項1に記載の高分子−siRNA担体。
- 請求項1に記載の高分子−siRNA担体を有効量含む抗癌剤組成物。
- (a)正電荷を有する高分子にジスルフィド結合のための官能基を導入する段階と、
(b)poly−siRNAの片末端又は両末端に官能基を導入するか、又は活性化する段階と、
(c)前記段階(a)で製造した高分子と前記段階(b)で製造したpoly−siRNAを電荷結合及びジスルフィド結合により結合してナノ粒子を形成する段階とを含む高分子−siRNA担体の製造方法であって、
前記高分子は、キトサン又はグリコールキトサンであり、
前記poly−siRNAは、複数の単量体siRNAがジスルフィド結合により連結されているものである、高分子−siRNA担体の製造方法。
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| KR1020100089081A KR101223483B1 (ko) | 2010-09-10 | 2010-09-10 | 전하결합 및 생분해성 공유결합으로 동시에 연결된 고분자―siRNA 나노입자 전달체 |
| KR10-2010-0089081 | 2010-09-10 |
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| KR101369716B1 (ko) * | 2012-07-20 | 2014-03-05 | 성균관대학교산학협력단 | 항산화 물질을 내부에 포함하는 나노미셀 형태의 유전자 전달체 |
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| KR102049568B1 (ko) | 2013-04-01 | 2019-11-27 | 삼성전자주식회사 | 히알루론산을 포함하는 핵산전달용 조성물 |
| KR101575710B1 (ko) * | 2013-04-11 | 2015-12-10 | 한국과학기술연구원 | 티올화 글리콜 키토산-거대분자 전송 도메인 복합체를 포함하는 안구질환 치료용 약물전달 시스템 및 그 제조방법 |
| KR101623521B1 (ko) | 2013-08-05 | 2016-05-24 | 한국과학기술연구원 | siRNA의 종양 표적화된 전달을 위한 젤라틴 기반 나노입자 복합체 및 그 제조방법 |
| CN103849652B (zh) * | 2013-12-22 | 2016-06-29 | 北京工业大学 | 一种用于microRNA靶向传递的纳米载体复合物及其制备方法与应用 |
| KR102003239B1 (ko) * | 2016-10-31 | 2019-07-24 | 케이비바이오메드 주식회사 | 경구투여용 간암표적성 siRNA 나노전달체 및 이의 제조방법 |
| WO2018175445A1 (en) * | 2017-03-20 | 2018-09-27 | Northwestern University | Poly(lactic-co-glycolic acid) (plga) spherical nucleic acids |
| CN111481679B (zh) * | 2020-04-21 | 2022-02-01 | 河南大学 | siRNA纳米胶囊及其制备方法和应用 |
| WO2024101944A1 (ko) * | 2022-11-10 | 2024-05-16 | 경희대학교 산학협력단 | Plga-sistat3를 유효성분으로 포함하는 자가면역성 신경질환의 예방 또는 치료용 조성물 |
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| EP1228236A2 (en) * | 2000-02-07 | 2002-08-07 | Transgene S.A. | Compositions for transfecting nucleic acids and their use |
| JP2004506617A (ja) * | 2000-06-14 | 2004-03-04 | トランジェーヌ、ソシエテ、アノニム | 哺乳類において、細胞毒性治療、詳しくは抗腫瘍治療を行うための組合せ生成物 |
| CA2531069A1 (en) * | 2003-07-03 | 2005-01-27 | The Trustees Of The University Of Pennsylvania | Inhibition of syk kinase expression |
| JP4900391B2 (ja) | 2006-09-11 | 2012-03-21 | 日本電気株式会社 | 光学的情報記録再生装置及び記録マーク品質測定方法 |
| CA2708354C (en) * | 2007-12-13 | 2018-12-11 | Polyplus-Transfection | Means for delivery of nucleic acids active for gene silencing using synthetic polymers |
| NZ588583A (en) * | 2008-04-15 | 2012-08-31 | Protiva Biotherapeutics Inc | Novel lipid formulations for nucleic acid delivery |
| KR101045525B1 (ko) * | 2008-10-14 | 2011-07-01 | 강릉원주대학교산학협력단 | 기능성 작용기를 물질의 표면에 도입하는 방법 |
| EP2398500B1 (en) * | 2009-02-20 | 2019-03-13 | 2-BBB Medicines B.V. | Glutathione-based drug delivery system |
| WO2011008857A1 (en) * | 2009-07-14 | 2011-01-20 | Northeastern University | SiRNA PHOSPHOLIPID CONJUGATE |
| US20130149783A1 (en) * | 2010-03-16 | 2013-06-13 | James William Yockman | Cleavable modifications to reducible poly (amido ethylenimines)s to enhance nucleotide delivery |
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| KR101223483B1 (ko) | 2013-01-17 |
| US9061068B2 (en) | 2015-06-23 |
| EP2436399A1 (en) | 2012-04-04 |
| US20120065242A1 (en) | 2012-03-15 |
| JP2012055300A (ja) | 2012-03-22 |
| EP2436399B1 (en) | 2019-01-23 |
| KR20120026897A (ko) | 2012-03-20 |
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