Method for transferring molecules in vital cells by means of laser beams and arrangement for carrying out said method
US7892837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2003 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Feb 23, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/87
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention relates to an optical method for targeted transfer of molecules, preferably of DNA, RNA, peptides, amino acids and proteins, into vital cells by means of laser radiation and to an arrangement for implementing the method. The object of the invention, to find a novel possibility for targeted molecule transfer into the interior of vital cells, particularly the transfer of DNA, RNA, peptides, amino acids and proteins, which achieves a high transfer efficiency while extensively excluding destructive side effects such as a lethal effect on a treated cell, is met according to the invention in that cellular membranes are opened transiently for the molecule transfer by multiple laser pulses in the microjoule range or less and a pulsed, near-infrared laser beam with a pulse width in the femtosecond range is directed in each instance to a submicrometer spot of a membrane of the vital cell for an irradiation period of less than one second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.