Methods and compositions are provided for forming complexes between dsDNA and novel DNA-binding polymers comprising N-terminal thiophene-containing moieties which exhibit selectivity for T-A base pairs. By appropriate choice of target sequences and DNA-binding polymers, complexes comprising polymer-DNA are obtained with high association constants. The formation of complexes can be used for identification of specific dsDNA sequences, for inhibiting gene transcription, and as a therapeutic for inhibiting proliferation of undesired cells or modulation of expression of specific genes.
本发明提供了一种形成双链DNA和新型DNA结合聚合物之间复合物的方法和组合物,所述聚合物包含N-末端
硫吡咯含基团,具有对T-A碱基对的选择性。通过适当选择目标序列和DNA结合聚合物,可以获得具有高结合常数的聚合物-DNA复合物。复合物的形成可用于鉴定特定的双链DNA序列,抑制
基因转录,并作为抑制不需要的细胞增殖或调节特定
基因表达的治疗方法。