Shape effects of nanoparticles conjugated with cell-penetrating peptides (HIV Tat PTD) on CHO cell uptake. Academic Article uri icon


  • In order to probe the nanoparticle shape/size effect on cellular uptake, a spherical and two cylindrical nanoparticles, whose lengths were distinctively varied, were constructed by the selective cross-linking of amphiphilic block copolymer micelles. Herein, we demonstrate that, when the nanoparticles were functionalized with the protein transduction domain of human immunodeficiency virus type 1 Tat protein (HIV Tat PTD), the smaller, spherical nanoparticles had a higher rate of cell entry into Chinese hamster ovary (CHO) cells than did the larger, cylindrical nanoparticles. It was also found that nanoparticles were released after internalization and that the rate of cell exit was dependent on both the nanoparticle shape and the amount of surface-bound PTD.

published proceedings

  • Bioconjug Chem

altmetric score

  • 3

author list (cited authors)

  • Zhang, K. e., Fang, H., Chen, Z., Taylor, J., & Wooley, K. L.

citation count

  • 170

complete list of authors

  • Zhang, Ke||Fang, Huafeng||Chen, Zhiyun||Taylor, John-Stephen A||Wooley, Karen L

publication date

  • September 2008