NCIt definition : A 20-mer antisense oligonucleotide complementary to a coding region in the mRNA of
the R2 small subunit component of human ribonucleotide reductase. GTI-2040 decreases
mRNA and protein levels of R2 in vitro and may inhibit tumor cell proliferation in
human tumors in vivo. (NCI04);
Alternative definition : NCI-GLOSS: A substance being studied in the treatment of cancer. It blocks the production
of a protein called ribonucleotide reductase, which helps cells make DNA. This may
kill cancer cells that need ribonucleotide reductase to grow. It may also make cells
more sensitive to anticancer drugs. It is a type of antisense oligonucleotide, and
a type of ribonucleotide reductase inhibitor.;