The work will be presented at the 223nd national meeting of the American Chemical Society, April 7-11 in Orlando.
Iezzi is working with chemistry professor Harry Dorn, known for having developed a method for inserting metal atoms inside of fullerenes, creating a novel family of molecules and the architecture for a new field of chemistry. These filled fullerenes (metallofullerenes) are now being developed as improved MRI reagents, and other non-medical applications.
But the idea of using the 60 to 80-atom hollow carbon molecules for drug delivery is what fired Iezzi's imagination. Thus, he has added biological functionality to a buckeyball. Iezzi has attached a chemical group known as "13C labeled 6,7-dimethoxyisochroman-3-one" to an 80-atom fullerene containing three scandium atoms anchored by a nitrogen atom (Sc3N@C80). That is, he attached an isochromanone derivative to a buckeyball. "You heat the isochromanone until it loses carbon dioxide and attaches to the fullerene," Iezzi explains, as if he's making a sandwich instead of working with invisible molecules.
"These molecules are so novel that no one knew how they would react or where we would attach other molecules," he says. The aim is to attach water-soluble groups "such as peptides or hydrophilic chains, so we can get these molecules into the blood stream."
"It is a first step in making drugs," says Dorn.
Iezzi and Dorn will present their paper, "Novel derivatives of trimetallic nitride endohedral metallofullerenes for biological applications" (IEC 226), at 2:30 p.m. Tuesday, April 9, in Convention Center room 304H. Dorn
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Contact: Susan Trulove
STrulove@vt.edu
540-231-5646
Virginia Tech
9-Apr-2002