Process of entrapping genetic materials in ultra-low size nanoparticles of inorganic compounds to form non-viral carriers
US6555376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2002 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/88
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a process of entrapping genetic materials in nanoparticles of inorganic metal salts of size below 100 nm diameter to form non-viral carriers for delivery of genes. The process comprises the steps of dissolving surfactants and a cosurfactant in oil to obtain reverse micelles. An aqueous solution of genetic material is added to the reverse micelles. Thereafter the reverse micelles are divided into two equal parts. To one part, aqueous solution of inorganic metal salts is dissolved to obtain optically clear and transparent reverse micelles. To the second part aqueous solution of precipitating agent is added to obtain optically clear and transparent reverse micelles. The two equally divided parts of reverse micelles are mixed to form inorganic nanopartcles encapsulating added genetic material. Thereafter, the nanoparticles are separated from reverse micelles, the inorganic nanoparticles are dispersed in water and dialyzed to remove free metal salts, surfactant and oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.