Thermal denaturation studies (Tm values) of PS-ODN with complementary RNA and their half-life evaluations against SVPDE, Pol I and fetal calf serum (FCS)79.
| ODN (5′ → 3′)a | T m with RNA (°C) | t 1/2 b | RNase-H activation | ||
|---|---|---|---|---|---|
| SVPDE (s) | Pol I (min) | FCS (h) | |||
| [d(CTCTCGCACCCATCTCTCTCCTTCT)]-all-PO | 73.1 | 88 | 30 | — | ✓ |
| Hairpin-all-POc | 72 | >1000 | >120 | — | ✓ |
| [d(CTCTCGCACCCATCTCTCTCCTTCT)]-all-PS | 65 | — | 120 | ≫16 | ✓ |
| Hairpin-all-PSc | 63 | — | >240 | ∼4 | ✓ |
PS and PO refer to the phosphorothioate and phosphodiester internucleoside linkages respectively.
ODN not tested.
Hairpin loop structure of the ODN studied.