Methods for quenching pathogen inactivators in biological materials
US6709810B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P7/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods are provided for quenching undesired side reactions of pathogen inactivating compounds in biological materials. In a particular embodiment, methods are provided for quenching undesired side reactions of a pathogen inactivating compound that includes a functional group which is, or which is capable of forming, an electrophilic group. In this embodiment, the material is treated with the pathogen inactivating compound and a quencher, wherein the quencher comprises a nucleophilic functional group that is capable of covalently reacting with the electrophilic group. The electrophilic group on the pathogen inactivating compound is preferably a non-radical cationic group. In one embodiment, the pathogen inactivating compound includes a nucleic acid binding ligand and a mustard group, wherein the mustard group is capable of reacting in situ to form the electrophilic group. Preferred quenchers are thiols, such as glutathione. Biological materials which may be treated include whole blood, red blood cells, blood plasma, and platelets. The methods permit inhibition of the modification of red blood cells in red blood cell containing materials during pathogen inactivation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.