IMMUNODIRECTABLE MR CONTRAST AGENTS

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 7113
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
61 Mooney Street, Cambridge, MA, 02138
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 LEE JOSEPHSON MD
 (617) 497-2070
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A NUMBER OF SYNTHESES OF SMALL MAGNETIC PARTICLES PERMITTINGTHE COVALENT ATTACHMENT OF ANTIBODIES WILL BE EXAMINED. CHANGES IN MAGNETIC RESONANCE (MR) PROTON RELAXATION AFTER MAGNETIC ANTIBODIES HAVE BOUND TO CELL SURFACE ANTIGENS WILLBE UTILIZED TO DEMONSTRATE THE BINDING OF ANTIBODY (AND MAGNETIC LABEL) TO ANTIGENS. THE MAGNETIC LABELS INVESTIGATED WILL POSESS THE MAGNETIC PROPERTIES OF A CRYSTAL (E.G., HIGH MAGNETIC SUSCEPTIBILITY)AND THE SOLUTION PROPERTIES OF SOLUBLE MACROMOLECULES (E.G.,NO SETTLING ON PROLONGED STANDING). ONE ADVANTAGE OF ATTACHING ANTIBODY TO MAGNETIC PARTICLES, OVER THE OFTEN-USED APPROACH OF DERIVATIZING PROTEINS WITH CHELATORS,IS THAT FAR MORE METAL IONS CAN BE ATTACHED PER MOLE OF ANTIBODY. IN ADDITION, UNLIKE RADIOLABELED ANTIBODIES, MAGNETIC LABELS SHOW NO RADIOACTIVE DECAY. HIGHLY MAGNETIC PROTEINS MAY BE USEFUL AGENTS FOR IMMUNODIRECTABLE MR CONTRAST AGENTS.

* Information listed above is at the time of submission. *

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