Quenching methods for red blood cell inactivation process
US7655392B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2005 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Mar 13, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Methods are provided for improved quenching of undesired side reactions upon treating a red blood cell composition with a pathogen inactivating compound comprising a nucleic acid binding ligand and a functional group which is, or which is capable of forming, an electrophilic group. In some embodiments, the improved methods use a suitably high concentration of quencher that comprises a nucleophilic functional group that is capable of covalently reacting with the electrophilic group, wherein the treatment occurs within a desired pH range to provide sufficient quenching. Preferred quenchers for use in some of the methods include thiols, such as glutathione, which have been suitably neutralized such that addition to a red blood cell composition results in the desired concentration of quencher at a desirable pH range of 6.8 to 8.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.