Small molecule telomerase inhibitors are also potent inhibitors of telomeric C-strand synthesis

TABLE 1.

IC50 values (nM) of TMPyP4 or PDS inhibition of CST–PP synthesis or binding to the DNA template indicated

9xTEL 9xnoGG
Na+/K+ Li+ Na+/K+ Li+
IC50 SEM IC50 SEM IC50 SEM IC50 SEM
TMPyP4 IC50synthesis 250 63a 1000 150b 220 40b 310 57b
IC50binding 260 40c 840 180c 190 17c 200 23d
PDS IC50synthesis 140 16c 110  6.5b 200 17a 180 26d
IC50binding 110 14d 140 11d 120 7.0d 160 15d
  • IC50synthesis and IC50binding are defined as the concentration of small molecules required to inhibit synthesis or binding by half.

  • aIC50 and SEM calculated from n = 5 independent replicates.

  • bIC50 and SEM calculated from n = 4 independent replicates.

  • cIC50 and SEM calculated from n = 6 independent replicates.

  • dIC50 and SEM calculated from n = 3 independent replicates.

This Article

  1. RNA 30: 1213-1226