如何控制基因的表現是一門相當複雜與有意義的研究項目,它的應用也很廣。吾人可用寡核酸鏈和含有核鹼異構物的寡核酸鏈與基因或單鏈的儲義核酸形成核酸三螺旋來達到干擾基因表現功能。在基因上形成三螺旋的位置可由寡核酸鏈的核鹼順序而定。可以取代抑制儲義核酸(antisense)的功能。本文亦設計了一些在這方面的實驗。同時也把以往在抑制儲義核酸方面的研究也做了一個整理。俾使讀者能瞭解核酸三螺旋在生物和醫學上的應用。
There has been much recent interest in controlling gene expression and protein synthesis in living cells through the intervention of antigene and antisense oligonucleotides or oligonucleotide analogs. This paper will give a brief review of the past achievements and discuss the prospects for the future. In addition the structure and stability of triple-stranded nucleic acids (triplex) will also be described.