Effect of 2'-O-methyl/thiophosphonoacetate-modified antisense oligonucleotides on huntingtin expression in patient-derived cells. Journal Article uri icon



  • Optimizing oligonucleotides as therapeutics will require exploring how chemistry can be used to enhance their effects inside cells. To achieve this goal it will be necessary to fully explore chemical space around the native DNA/RNA framework to define the potential of diverse chemical modifications. In this report we examine the potential of thiophosphonoacetate (thioPACE)-modified 2'-O-methyl oligoribonucleotides as inhibitors of human huntingtin (HTT) expression. Inhibition occurred, but was less than with analogous locked nucleic acid (LNA)-substituted oligomers lacking the thioPACE modification. These data suggest that thioPACE oligonucleotides have the potential to control gene expression inside cells. However, advantages relative to other modifications were not demonstrated. Additional modifications are likely to be necessary to fully explore any potential advantages of thioPACE substitutions.

publication date

  • December 15, 2014

has subject area

has restriction

  • bronze

Date in CU Experts

  • February 18, 2016 9:28 AM

Full Author List

  • Matsui M; Threlfall RN; Caruthers MH; Corey DR

author count

  • 4

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1949-0968

Additional Document Info

start page

  • e1146391


  • 5


  • 3