Maximizing the Potency of siRNA Lipid Nanoparticles for Hepatic Gene Silencing In Vivo**
作者:Muthusamy Jayaraman、Steven M. Ansell、Barbara L. Mui、Ying K. Tam、Jianxin Chen、Xinyao Du、David Butler、Laxman Eltepu、Shigeo Matsuda、Jayaprakash K. Narayanannair、Kallanthottathil G. Rajeev、Ismail M. Hafez、Akin Akinc、Martin A. Maier、Mark A. Tracy、Pieter R. Cullis、Thomas D. Madden、Muthiah Manoharan、Michael J. Hope
DOI:10.1002/anie.201203263
日期:2012.8.20
Special (lipid) delivery: The role of the ionizable lipid pKa in the in vivo delivery of siRNA by lipidnanoparticles has been studied with a large number of head group modifications to the lipids. A tight correlation between the lipid pKa value and silencing of the mouse FVII gene (FVII ED50) was found, with an optimal pKa range of 6.2–6.5 (see graph). The most potent cationic lipid from this study
特殊(脂质)递送:通过对脂质进行大量头基修饰,研究了可电离脂质 p K a在脂质纳米粒子体内递送 siRNA 中的作用。脂质P的的紧密相关ķ一个 值和鼠标FVII基因(FVII ED的沉默50)被发现,具有最佳p ķ一个范围的6.2-6.5(见图)。本研究中最有效的阳离子脂质的 ED 50水平在小鼠中约为 0.005 mg kg -1,在非人类灵长类动物中低于 0.03 mg kg -1。
[EN] IMPROVED CATIONIC LIPIDS AND METHODS FOR THE DELIVERY OF THERAPEUTIC AGENTS<br/>[FR] LIPIDES CATIONIQUES ET PROCÉDÉS AMÉLIORÉS POUR L'ADMINISTRATION D'AGENTS THÉRAPEUTIQUES
申请人:PROTIVA BIOTHERAPEUTICS INC
公开号:WO2011000106A1
公开(公告)日:2011-01-06
The present invention provides compositions and methods for the delivery of therapeutic agents to cells. In particular, these include novel cationic lipids and nucleic acid-lipid particles that provide efficient encapsulation of nucleic acids and efficient delivery of the encapsulated nucleic acid to cells in vivo. The compositions of the present invention are highly potent, thereby allowing effective knock-down of a specific target protein at relatively low doses. In addition, the compositions and methods of the present invention are less toxic and provide a greater therapeutic index compared to compositions and methods previously known in the art.
NOVEL LIPID FORMULATIONS FOR DELIVERY OF THERAPEUTIC AGENTS TO SOLID TUMORS
申请人:Yaworski Ed
公开号:US20110076335A1
公开(公告)日:2011-03-31
The present invention provides novel, serum-stable lipid particles comprising one or more active agents or therapeutic agents, methods of making the lipid particles, and methods of delivering and/or administering the lipid particles. More particularly, the present invention provides serum-stable nucleic acid-lipid particles (SNALP) comprising a nucleic acid (e.g., one or more interfering RNA molecules), methods of making the SNALP, and methods of delivering and/or administering the SNALP (e.g., for the treatment of cancer). In particular embodiments, the present invention provides tumor-directed lipid particles that preferentially target solid tumors. The tumor-directed formulations of the present invention are capable of preferentially delivering a payload such as a nucleic acid to cells of solid tumors compared to non-cancerous cells.
CATIONIC LIPIDS AND METHODS FOR THE DELIVERY OF THERAPEUTIC AGENTS
申请人:Heyes James
公开号:US20120202871A1
公开(公告)日:2012-08-09
The present invention provides compositions and methods for the delivery of therapeutic agents to cells. In particular, these include novel cationic lipids and nucleic acid-lipid particles that provide efficient encapsulation of nucleic acids and efficient delivery of the encapsulated nucleic acid to cells in vivo. The compositions of the present invention are highly potent, thereby allowing effective knock-down of a specific target protein at relatively low doses. In addition, the compositions and methods of the present invention are less toxic and provide a greater therapeutic index compared to compositions and methods previously known in the art.
IMPROVED AMINO LIPIDS AND METHODS FOR THE DELIVERY OF NUCLEIC ACIDS
申请人:Arbutus Biopharma Corporation
公开号:EP3225621A1
公开(公告)日:2017-10-04
The present invention provides superior compositions and methods for the delivery of therapeutic agents to cells. In particular, these include novel lipids and nucleic acid-lipid particles that provide efficient encapsulation of nucleic acids and efficient delivery of the encapsulated nucleic acid to cells in vivo. The compositions of the present invention are highly potent, thereby allowing effective knock-down of specific target proteins at relatively low doses. In addition, the compositions and methods of the present invention are less toxic and provide a greater therapeutic index compared to compositions and methods previously known in the art.