Antisense peptides are defined as those generated from the non-coding
strand of DNA, and represent a peptide analog to antisense RNA technol
ogies. Peptides generated from both parallel and anti-parallel reading
s of the non-coding strand of DNA have displayed biological activity,
although considerable controversy exists concerning the mechanism(s) b
y which these ''anti-peptides'' exert their effects. This paper provid
es a critical review of some of the key data and issues defining this
emerging field and focuses on contradictions and discrepancies in the
current studies. We also suggest some directions for future research s
uch as more physico-chemical studies and the use of combinatorial chem
istry techniques combined with solid phase binding studies to test, on
ce and for all, the generality and specificity of antisense peptide in
teractions.