Effect of methylene methylimino linkage of antisense oligonucleotide to the platelet-derived growth factor A-chain on growth of vascular smooth muscle cells from spontaneously hypertensive rats
H. Kishioka et al., Effect of methylene methylimino linkage of antisense oligonucleotide to the platelet-derived growth factor A-chain on growth of vascular smooth muscle cells from spontaneously hypertensive rats, EUR J PHARM, 392(3), 2000, pp. 129-132
Spontaneously hypertensive rats (SHR)-derived vascular smooth muscle cells
show exaggerated growth and increased expression of platelet-derived growth
factor (PDGF) A-chain mRNA. We examined the effect of methylene methylimin
o linkage of antisense oligodeoxynucleotide, a novel modification of antise
nse oligodeoxynucleotide designed to increase nuclease resistance, to PDGF
A-chain on the exaggerated growth of vascular smooth muscle cells from SHR.
Methylene methylimino-linked oligodeoxynucleotide provided complete resist
ance against S1 nuclease. Methylene methylimino linkage of antisense oligod
eoxynucleotide to PDGF A-chain resulted in a rapid inhibition of basal DNA
synthesis of vascular smooth muscle cells from SHR. This inhibition was muc
h greater than that produced by phosphorothioate linkage of antisense oligo
deoxynucleotide to PDGF A-chain. The methylene methylimino linkage of antis
ense oligodeoxynucleotide to PDGF A-chain may prove useful in the treatment
of arterial proliferative diseases including hypertension. (C) 2000 Elsevi
er Science B.V. All rights reserved.