Polyamidoamine dendrimers inhibit binding of Tat peptide to TAR RNA.
The binding of polyamidoamine (PAMAM) dendrimer or Tat peptide to trans-acting responsive element (TAR) RNA has been studied using microgravimetric quartz crystal microbalance (QCM). Experimental results showed that PAMAM dendrimer could form complexes with TAR RNA. Especially, PAMAM dendrimer could disrupt the interaction of Tat peptide with TAR RNA, which is essential for HIV-1 virus replication, suggesting that QCM is a powerful tool for studying the binding processes of Tat peptide-TAR RNA and drug-TAR RNA and has great significance for the design of new drugs. An equation to measure the binding ability between TAR RNA and other species has been proposed.
Zhao
Hong
H
Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, PR China.
Li
Jinru
J
Xi
Fu
F
Jiang
Long
L
D015696:Gene Products, tat / Q000737:chemistry / Q000378:metabolism*; D015497:HIV-1 / Q000737:chemistry / Q000235:genetics; D018625:Microscopy, Atomic Force; D015394:Molecular Structure; D011073:Polyamines / Q000737:chemistry*; D011485:Protein Binding / Q000187:drug effects; D012367:RNA, Viral / Q000737:chemistry / Q000378:metabolism*; D016601:RNA-Binding Proteins / Q000737:chemistry* / Q000235:genetics; D015533:Transcriptional Activation; D054322:tat Gene Products, Human Immunodeficiency Virus
D015696:Gene Products, tat; D011073:Polyamines; D012367:RNA, Viral; D016601:RNA-Binding Proteins; D054322:tat Gene Products, Human Immunodeficiency Virus